Messages in AirborneWindEnergy group.                       AWES4496to4548 Page 70 of 79.

Group: AirborneWindEnergy Message: 4496 From: Bob Stuart Date: 10/17/2011
Subject: Re: "Trampoline" Rig AWECS

Group: AirborneWindEnergy Message: 4497 From: dave santos Date: 10/17/2011
Subject: Spiral Sparred Membrane Tube //Re: [AWECS] Re: "Trampoline" Rig AWEC

Group: AirborneWindEnergy Message: 4498 From: Bob Stuart Date: 10/17/2011
Subject: Re: Spiral Sparred Membrane Tube //Re: [AWECS] Re: "Trampoline" Rig

Group: AirborneWindEnergy Message: 4499 From: roderickjosephread Date: 10/17/2011
Subject: Spiral Sparred Membrane Tube //Re: [AWECS] Re: "Trampoline" Rig AWEC

Group: AirborneWindEnergy Message: 4500 From: Joe Faust Date: 10/17/2011
Subject: Re: Testing Persistent Kite Flight by Pumping (Stability Factors)

Group: AirborneWindEnergy Message: 4501 From: Doug Date: 10/18/2011
Subject: Re: "Trampoline" Rig AWECS

Group: AirborneWindEnergy Message: 4502 From: Joe Faust Date: 10/18/2011
Subject: Single, Double, Tri-tether Power Generation

Group: AirborneWindEnergy Message: 4503 From: Joe Faust Date: 10/18/2011
Subject: Re: Single, Double, Tri-tether Power Generation

Group: AirborneWindEnergy Message: 4504 From: dave santos Date: 10/18/2011
Subject: Re: Single, Double, Tri-tether Power Generation

Group: AirborneWindEnergy Message: 4505 From: Doug Date: 10/19/2011
Subject: Re: Single, Double, Tri-tether Power Generation

Group: AirborneWindEnergy Message: 4506 From: Robert Copcutt Date: 10/19/2011
Subject: Re: Single, Double, Tri-tether Power Generation

Group: AirborneWindEnergy Message: 4507 From: Doug Date: 10/19/2011
Subject: Turbine Designer Arrested for Fraud

Group: AirborneWindEnergy Message: 4508 From: dave santos Date: 10/19/2011
Subject: The Power of Rope //Re: [AWECS] Re: Single, Double, Tri-tether Power

Group: AirborneWindEnergy Message: 4509 From: Bob Stuart Date: 10/19/2011
Subject: Re: The Power of Rope //Re: [AWECS] Re: Single, Double, Tri-tether P

Group: AirborneWindEnergy Message: 4510 From: Bob Stuart Date: 10/19/2011
Subject: Re: Turbine Designer Arrested for Fraud

Group: AirborneWindEnergy Message: 4511 From: dave santos Date: 10/19/2011
Subject: Re: Turbine Designer Arrested for Fraud

Group: AirborneWindEnergy Message: 4512 From: dave santos Date: 10/19/2011
Subject: The New Oil Boom's Impact on AWE R&D

Group: AirborneWindEnergy Message: 4513 From: roderickjosephread Date: 10/20/2011
Subject: The Power of Rope //Re: [AWECS] Re: Single, Double, Tri-tether Power

Group: AirborneWindEnergy Message: 4514 From: Doug Date: 10/20/2011
Subject: Re: Turbine Designer Arrested for Fraud

Group: AirborneWindEnergy Message: 4515 From: Joe Faust Date: 10/20/2011
Subject: Any wing(s)

Group: AirborneWindEnergy Message: 4516 From: Doug Date: 10/20/2011
Subject: 1000 ways to skin this cat

Group: AirborneWindEnergy Message: 4518 From: Darin Selby Date: 10/20/2011
Subject: Re: 1000 ways to skin this cat

Group: AirborneWindEnergy Message: 4519 From: dave santos Date: 10/20/2011
Subject: Latest Tethered Aviation ConOps Draft (Call for Input)

Group: AirborneWindEnergy Message: 4520 From: dave santos Date: 10/20/2011
Subject: Pete Lynn Jr Wayback When

Group: AirborneWindEnergy Message: 4521 From: dave santos Date: 10/21/2011
Subject: Safety Aloft (Kite-Based Sky-Climbing, "Manlifting")

Group: AirborneWindEnergy Message: 4522 From: Joe Faust Date: 10/21/2011
Subject: Re: Safety Aloft (Kite-Based Sky-Climbing, "Manlifting")

Group: AirborneWindEnergy Message: 4523 From: dave santos Date: 10/21/2011
Subject: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "Manl

Group: AirborneWindEnergy Message: 4524 From: Doug Date: 10/22/2011
Subject: Re: Safety Aloft (Kite-Based Sky-Climbing, "Manlifting")

Group: AirborneWindEnergy Message: 4525 From: dave santos Date: 10/22/2011
Subject: Rare Makani Flying Wing Image (plus Flight Dynamics Analysis)

Group: AirborneWindEnergy Message: 4526 From: christopher carlin Date: 10/23/2011
Subject: Re: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "

Group: AirborneWindEnergy Message: 4527 From: dave santos Date: 10/23/2011
Subject: Re: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "

Group: AirborneWindEnergy Message: 4528 From: Bob Stuart Date: 10/23/2011
Subject: Re: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "

Group: AirborneWindEnergy Message: 4529 From: Doug Date: 10/23/2011
Subject: Re: Rare Makani Flying Wing Image (plus Flight Dynamics Analysis)

Group: AirborneWindEnergy Message: 4530 From: Doug Date: 10/23/2011
Subject: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "Manl

Group: AirborneWindEnergy Message: 4531 From: dave santos Date: 10/23/2011
Subject: Acronyms, Practicioners v. Bystanders //Re: ETOPS

Group: AirborneWindEnergy Message: 4532 From: dave santos Date: 10/23/2011
Subject: Re: Rare Makani Flying Wing Image (plus Flight Dynamics Analysis)

Group: AirborneWindEnergy Message: 4533 From: Darin Selby Date: 10/23/2011
Subject: Re: How to obtain unobtainium?

Group: AirborneWindEnergy Message: 4535 From: dave santos Date: 10/23/2011
Subject: Re: Obtainium v. Unobtainium (SuperTurbine(R) note, *sigh*)

Group: AirborneWindEnergy Message: 4536 From: Muzhichkov Date: 10/23/2011
Subject: Module generator

Group: AirborneWindEnergy Message: 4537 From: dave santos Date: 10/23/2011
Subject: Visionary AWE Artwork

Group: AirborneWindEnergy Message: 4538 From: Pierre Benhaiem Date: 10/23/2011
Subject: FlygenKite news

Group: AirborneWindEnergy Message: 4539 From: roderickjosephread Date: 10/23/2011
Subject: Re: Visionary AWE Artwork

Group: AirborneWindEnergy Message: 4540 From: Doug Date: 10/24/2011
Subject: What is a Laddermill?

Group: AirborneWindEnergy Message: 4541 From: dave santos Date: 10/24/2011
Subject: Taleb- We are "sitting on a barrel of dynamite".

Group: AirborneWindEnergy Message: 4542 From: dave santos Date: 10/24/2011
Subject: Re: What is a Laddermill?

Group: AirborneWindEnergy Message: 4543 From: Uwe Fechner Date: 10/24/2011
Subject: Re: What is a Laddermill?

Group: AirborneWindEnergy Message: 4544 From: dave santos Date: 10/24/2011
Subject: Introducing the Soft LadderKite

Group: AirborneWindEnergy Message: 4545 From: Doug Date: 10/24/2011
Subject: Permanent Magnet Alternator Lathe Demo: RPM vs Open Voltage (video)

Group: AirborneWindEnergy Message: 4547 From: Joe Faust Date: 10/25/2011
Subject: Re: Introducing the Soft LadderKite

Group: AirborneWindEnergy Message: 4548 From: Bob Stuart Date: 10/25/2011
Subject: Re: tubercles




Group: AirborneWindEnergy Message: 4496 From: Bob Stuart Date: 10/17/2011
Subject: Re: "Trampoline" Rig AWECS
Sorry, CAD is off this year here.  Rod should be able to whip one up.  At first glance, a triple helix is easy to mistake for a double thread if it is not very steep.  Then, imagine it shrink wrapped.

Bob

On 16-Oct-11, at 10:07 PM, Darin Selby wrote:


Group: AirborneWindEnergy Message: 4497 From: dave santos Date: 10/17/2011
Subject: Spiral Sparred Membrane Tube //Re: [AWECS] Re: "Trampoline" Rig AWEC
A tube such as under discussion cannot scale well owing to dependence on large rigid structure and high downforce in wind. A pressurized tube would be lighter, but still develop too much downforce. Bob had noted how Gordon explained the "nature-abhorrs-torsion" issue. These torsion-tube ideas wander away from real-world "kiteyness", they are a sort of death-zone for current AWE...
 
Darin could be content with the tube image Rod provided, and the multiple text descriptions, including Bob's variant, are also adequate word-pictures, given how geometrically simple the idea is. We barely have time to illustrate (to the world) the vast number of more effective AWE options.
Group: AirborneWindEnergy Message: 4498 From: Bob Stuart Date: 10/17/2011
Subject: Re: Spiral Sparred Membrane Tube //Re: [AWECS] Re: "Trampoline" Rig
I only entertain the idea because it does not scale like many rigid structures.  Like the arches in a modern tent, the compression  members can be of any length or slenderness without buckling.  It need not be particularly rigid, either, leaving room for toughness in the material spec.  But I'd sure need to see the math.  

Bob

On 17-Oct-11, at 12:38 PM, dave santos wrote:


Group: AirborneWindEnergy Message: 4499 From: roderickjosephread Date: 10/17/2011
Subject: Spiral Sparred Membrane Tube //Re: [AWECS] Re: "Trampoline" Rig AWEC
Thank you Bob for your shrink wrap description, very nice.

Apologies if the variation in topic seemed too off track and lower end tech. 

However it does seem like a good intermediary technology.
Many process engineers build their first working proposals in lego. 
This has the benefit of proving to clients that they understand the problem. Giving the further reassurance that when these guys get to play with the real specified toys, our production plant will be reliable and better. 

A £1 kids toy is keeping it simple.

Talking of kids, we spent today winning at the mod (on telly tonight), so further apologies, no drawing... but I have been in my loft with my phone...
Here's  the video description
Group: AirborneWindEnergy Message: 4500 From: Joe Faust Date: 10/17/2011
Subject: Re: Testing Persistent Kite Flight by Pumping (Stability Factors)

Play indoor kite on chair----"zen flyer"

From a chair, put energy into a kite during calm.

http://youtu.be/B-vOk7LlcWw

Group: AirborneWindEnergy Message: 4501 From: Doug Date: 10/18/2011
Subject: Re: "Trampoline" Rig AWECS
Hi Darin:
This was a discussion that lots of people were in on.
I'm not saying it is superior, just that I delineated the concept then, in response to the posting suggesting it is a "new" idea. I provided that reference for everyone, including new people who may not have seen it.
My further patents pending contain more related good ideas.
I notice the "serious"(?)(wink wink) players do not even post here at all. Maybe they have a point.
:)
Doug Selsam

Group: AirborneWindEnergy Message: 4502 From: Joe Faust Date: 10/18/2011
Subject: Single, Double, Tri-tether Power Generation

Welcome Yasunobu Toneaki

Power Generator

Yasunobu Toneaki
of Shiga, Japan

Application number: 12/936,264
Publication number: US 2011/0025060 A1
Filing date: Apr 3, 2009
Click image for full patent applicaiton:


 Discuss:

Discuss:
This seems to echo the Dave Santos Tri-Tether, almost; DaveS mined from a center gathering place .   But I have not read the details yet of  the claims by Yasunobu Toneaki.  

 

?More?

Group: AirborneWindEnergy Message: 4503 From: Joe Faust Date: 10/18/2011
Subject: Re: Single, Double, Tri-tether Power Generation

On application for patent is note:

Prior app: April 5, 2008 in Japan 2008-098819

Also, the following notes have not been researched, but might be importnat:

Yasunobu Toneaki

Electricity generating device - China Patent 200710149961

Yasunobu Toneaki: Electricity generating device. Yasunobu Toneaki April 2008: CN 200710149961
Application Number: 200710149961
Publication Number: 101158333
Application Date: 2007-10-08
Publication Date: 2008-04-09

In the instruction of one of his documents is about an unexamined patent application by him in 2004 for reel-in-out method for electricity generation.

Group: AirborneWindEnergy Message: 4504 From: dave santos Date: 10/18/2011
Subject: Re: Single, Double, Tri-tether Power Generation
Joe,
 
As hoped, great Japanese AWE emerged after invoking Mothra. Here is an interesting case of Heidegger's investigation of techne as "revealing along a framework", as both Yasunabu and i uncovered the same exact mechanism from its constellation in Platonic space.
 
Its uncertain if this rig was made public by KiteLab Ilwaco before Yasunobu filed. In these cases, coolIP ad-hoc fairness is to not try too hard to shoot down any small inventor's filing; to offer partnership rather than a wasteful priority battle.
 
Here is an "old" (~2008) KiteLab Version-
 
Group: AirborneWindEnergy Message: 4505 From: Doug Date: 10/19/2011
Subject: Re: Single, Double, Tri-tether Power Generation
Dear Dave S.:
This one looks nice for its simplicity.
I always thought the Japanese made such fantastic monster-movies!
Usually they had a little kid as the star. He would always be wearing a baseball cap. Ahh, Mothra! (points finger)

Nothing like seeing all those parabolic dishes aiming in unison, and if they were aiming at you, lookout! ZZZZZaaappp! Still working on getting a dish to do that trick where lightning bolts shoot out the middle... Mothra had better stick to territory she knows, slapping against the wall next to an outdoor light! Stay away from parabolic bug-zappers!

I also recommend "Underdog" cartoons. And "Tennessee Tuxedo".
Anyways you should come by here and fly some moths sometime! Also kites. Maybe a propeller or two.

One thing I note in this nascent art: running (flying?) before crawling - basic building blocks of these schemes being incompletely examined before combining them into even less likely schemes. I'd say work on each building block first before combining them.

I'm wondering about a basic fact (God, Doug shut up!): Is there any example of economic power generation using reels? Is there any evidence that, even if the power were "free", one could construct a dedicated, economical link in electrical power generation that used cables reeling in and out? Especially with regard to friction and wear, reversing cycles? (yes I'm sure some elevators can return some power to the grid when descending, but what is the cost of that electricity?)

I know most commercial power generation relies on constant rotation. Even just "nearly constant" rotation, with no reeling cables, no change in direction, no power-using fraction of the cycle, requires a lot of expensive electronics to be useful on the grid.

:)
Doug Selsam


Group: AirborneWindEnergy Message: 4506 From: Robert Copcutt Date: 10/19/2011
Subject: Re: Single, Double, Tri-tether Power Generation
Rowing machines and other gym equipment use reels to generate power. The
power is usually thrown away but that is not the fault of the reels. I
have found a Chinese supplier that is offering dyneema fishing line at a
surprisingly reasonable cost. Low enough to make it economic to simply
replace worn out tethers.

The cost of the electronics is not a barrier to reel in/out operation.
There are complex issues to be worked out but using the power of
open-source that will be possible.

People always tend to pull development projects into realms they are
familiar with. Those unfamiliar with computer control tend to shy away
from it but as someone who has seen its power I confidently predict
digital wizardry will win the AWE development race.

Robert.


Group: AirborneWindEnergy Message: 4507 From: Doug Date: 10/19/2011
Subject: Turbine Designer Arrested for Fraud
http://www.youtube.com/watch?feature=player_embedded&v=jx650JHyXzQ#

Real wind turbine people not sure whether to laugh or cry over this one.
Typical. Wasting money!
Group: AirborneWindEnergy Message: 4508 From: dave santos Date: 10/19/2011
Subject: The Power of Rope //Re: [AWECS] Re: Single, Double, Tri-tether Power
Doug,
 
There are many successful high-powered reeling models to study.
 
The top example is mining, with megascale cableways, giant drag-bucket excavators, and so on. Ocean shipping uses giant reels and capstans. Ships are towed by large UHMWPE ropes and tugboats carry powerful winches. Megascale cable-driven cranes are used to load and unload the largest cargos. Logging is another model of high power reeling tech whereby remote areas where emptied of giant logs by donkey engines and cableways. The modern ski resort is a descendant of these applications, often powered by multiple train engines. These are all multi-megawatt apps beyond the common elevator example.
 
When we study the raw power ratings of ropes, we see fantastic performance, "near superconducting efficiency". Its even conceivable to rival the power of an oil pipeline at high rope speeds, pushing the tech to its limits (imagine the rope itself as moving "oil"). We see new kinds of power belts and chains at the heart of some of the most powerful new engines.
 
The picture is far different when you look for long torsion drives. Older trucks had about 10m drive-shafts, and i have seen torsion shafts somewhat larger to open and close floodgates. Ships have rather longer propeller drive shafts. The largest civil-engineering torque-tube drive i could find was barely 70m long (x3m dia) and far too massive to fly. To tap high-altitude wind, you should seriously consider adapting your multi-turbine concept to tug in pulses by varying collective-pitch; rope will do the job the tube cannot.
 
daveS
Group: AirborneWindEnergy Message: 4509 From: Bob Stuart Date: 10/19/2011
Subject: Re: The Power of Rope //Re: [AWECS] Re: Single, Double, Tri-tether P
Reeling anecdote:
In the early 30s, a guy took advantage of the low prices of scrap iron and skilled labor, and started competing with the big, capital intensive crane companies, making one-off units for any purpose.  After some years, he was an industry leader, with standard products.  Before he sold the company, he broke it into four parts, since the customers were generally unaware of the other businesses being served.  The fastest reels were used for hauling fishing nets.

Bob Stuart

On 19-Oct-11, at 10:27 AM, dave santos wrote:


Group: AirborneWindEnergy Message: 4510 From: Bob Stuart Date: 10/19/2011
Subject: Re: Turbine Designer Arrested for Fraud
Are there no engineers in Louisiana, or are they dismissed as crackpots by the people who depend on them?  Unfortunately, something like this affects public perception of the whole industry.  We have to speak up about fraud, somehow.

Bob Stuart
We Are the 99%

On 19-Oct-11, at 8:36 AM, Doug wrote:


Group: AirborneWindEnergy Message: 4511 From: dave santos Date: 10/19/2011
Subject: Re: Turbine Designer Arrested for Fraud
This is the second recent DOE renewables scandal to emerge (Solyndra is the big one). In my opinion, its not the last, as we are seeing a similar dynamic first-hand with Google's Makani investment being the sole ARPA-E subsidy. Who really believes that successful autonomous megawatt aerobatic E-VTOL AWE is due from this program next year?
 
In defense of the hapless engineers caught up in these fiascos, they start out sincere and innocent, and by small degrees cross an unmarked line between incompetence and fraud. At some point  they know they are in dangerous waters, but they become so desperate to salvage a positive result that they do almost anything.
 
The final difference between an engineering hero and a crook is the fundamental merit of the idea v. how much sweat and OPM treasure was expended.

Group: AirborneWindEnergy Message: 4512 From: dave santos Date: 10/19/2011
Subject: The New Oil Boom's Impact on AWE R&D
 
 
Revolutionary new oil extraction technology is being widely deployed. "Drill, baby, drill!" is heard around the world. The historical pattern of relatively cheap abundant supply is set to continue.
 
This is not all bad news for AWE. The plastic feedstock to make wings will stay cheap. Could it be that the finest way to sequester carbon is in the sky, as working kites?
 
There is good work to be done creating petro-kite powerplant hybrids. Perhaps AWE-based atmospheric CO2 reduction tech will be affordable. On a crasser level, a petro-driven economic boom can pay for AWE R&D, but one must "cheat the devil", that is, such AWE should actually succeed, rather than be vanity.
 
Wubbo calls on us to depend on our human power of technological choice, that we can actually choose to live aloft futuristically in our power-kite arrays, rather than languish in the ruts of an extended Oil Age. Lets keep our bikes too.
Group: AirborneWindEnergy Message: 4513 From: roderickjosephread Date: 10/20/2011
Subject: The Power of Rope //Re: [AWECS] Re: Single, Double, Tri-tether Power
The original tri-tether drawing in this thread, suggests crosswind reeling between two downwind tethers.

The well founded anti torsion arguments imply that the momentum of a spinning kite rig is best caught close to the rig with a capstan pulling a loop through a generator on the ground... yes this is more weight and does not scale well.

I believe Dave S did early studies on this. I'll go over these again soon.

I can't imagine anyone feeling safe underneath a spinning pop up tunnel.
Group: AirborneWindEnergy Message: 4514 From: Doug Date: 10/20/2011
Subject: Re: Turbine Designer Arrested for Fraud
***Yeah well in the field of wind energy inventing, the 99% are the failures.

Group: AirborneWindEnergy Message: 4515 From: Joe Faust Date: 10/20/2011
Subject: Any wing(s)

http://energykitesystems.net/WPGA/JoyGpgK.html

Sharing the joy
with friends around the world:


Paragliders are gliding kites:: PG=GK
Flying kites are a complex of three subassemblies:
{wing set, tether set, resistive set} = (w,t,r)

Let W be the wing set. Let any wing be in W.
That is, W holds elements that may be fully limp or fully solid or any amount of solidity or stiffening between the extremes. W holds also all manner of rotating wings as all forms of fixed or flexible wings. W holds any shape of wing. W holds morphable wings also. Any element of W may be employed in air PGs or water PGs (gliding paravanes).

Let w be a wing set employed in a PG; w may consist of one or more elements, even up to high count.

Let t be the tether set of PG; t may consist of one element or more up to even high count.

Let r be the resistive set for PG and note that r may consist of one element or many elements up to high count.

Tension in t brought about by falling/kiting of r in reaction to actions of w in media (air, water, gases, liquids, flowing matter) together with passive or active controls may be configured to give effective gliding.

Some extremes to illustrate instantiations that result in PG:
1. Take the wing of a 747 airliner. Have one or more tethers to that wing. Hang at the bottom of that tether set a mass that fits purposes. Set the complex into free air for a falling and watch the paraglider do its gliding. Have any manner of controls: string control to aerodynamic surfaces, electrical wire sending signals and power to servos on the wing, radio control of servos, etc. Many choices for passive or active controlling of the paraglider.

2. Take a wing from a gyroglider. Tether that wing to a hung mass below. Set the arrangement in fall and see the paraglider occurring that has a vertical-axis rotary wing.

3. Take flip-wing and bridle at the ends of its rotation axis; hang a resistive mass via a tether set (one or more lines). Set this in fall and have a horizontal-axis winged paraglider.

4. Take a set of power kites and stack them with tethers for a wing set; tether the stack or train of wings to a lower hung mass driver; set the total metakite into fall in air and have a paraglider with multiple wings.

5. Take a limp canopy Jalbert airfoil evolute parafoil wing and hang by lines a massed resistive set of harness and person; set into fall in air and have yourself a paraglider that is more familiar to you. (Or similarly for Barish glide wing or Rogallo parawing)

6. Be a spider; spin some silk and shoot the silk up into updrafts; hang on. When you are lifted about and the undulating wafting set of lines play the role of both wing and tether, then know yourself, Spider, as a paraglider in a paraglider.

I am glad to share my joy with my friends here in this forum, as you have played a part in this matter, for sure; and I have deep thanks to those who have participated in the preambles to this joy opportunity. Plus karma nod is one way for you to get onto this flight of joy.  I set this tech and its very announcement into public domain, free for any purpose in any arena or space.

Wishing you and yours the best of lift for your paragliders,
no matter the design,
Joe Faust
October 20, 2011, filed at
http://energykitesystems.net/WPGA/JoyGpgK.html

PS: Feel free to add RATs to PGs to obtain FF-AWECS
 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Group: AirborneWindEnergy Message: 4516 From: Doug Date: 10/20/2011
Subject: 1000 ways to skin this cat
Hey I just wanted to point out:
I have SO MANY quite workable AWE ideas, most of which I think would work well, not all by any means even involving Superturbine(R) technology at all.
Some of them are SUPER-simple, exploiting completely unheard-of theories of operation that, once you heard them, you'd slap your forhead and go "OMG why isn't anyone trying that???".
Some are based on what I've learned by running turbines, others are theoretical, but still utilize the experience gained.

It's kind of sad that the whole patent thing gets in the way of just disclosing all these ideas. Also sad that the well-funded agencies are stuck in bureaucratic "neutral", producing mostly large amounts of wasted time and paperwork, when they COULD have hundreds of proof-of-concept prototypes built and run using the same amount of funding if it were targeted efficiently.

Of course it probably wouldn't matter anyway since probably nobody would bother to build them anyway, when blogging is so much easier.
Nonetheless the concepts are there. Wish we had a high-throughput experimentation facility. Wish there was a way to get a bunch of skilled people building these to see what really works well.

We need a place with lots of equipment and materials and a good wind resource. (Oh wait that is my garage!) OK I could use some help here. Free lodging available. Come on down! (up!)

If you live in the high desert and want to have some fun, I have multiple test sites, full machine shop, a shipping container full of helically-wound carbon fiber tubes of all sizes, hundreds of off-the-shelf blades of all types, and the ability to turn out more.

need talented people to help push this cart over the crest of the hill to enjoy the long ride down the other side. No I don;t want people who want to jump ON the cart while I push - I need people who will actually push the cart (few and far between).

Also, to wish for such an agency begs the question: why not CREATE such an organization? Any billionaire with good business sense reading this: the technology is serious and I've already passed up multi-million dollar offers. With more types of wind turbine patented worldwide than any entity on the world, this is getting to be a bit much for a one-man effort. Let's combine your business acumen and my technology and change the world!

:)
Doug Selsam
:)
Doug Selsam
Group: AirborneWindEnergy Message: 4518 From: Darin Selby Date: 10/20/2011
Subject: Re: 1000 ways to skin this cat
Being a member of the Friends of the Animals League, I like this technique the best.  





To: AirborneWindEnergy@yahoogroups.com
From: doug@selsam.com
Date: Thu, 20 Oct 2011 16:10:35 +0000
Subject: [AWECS] 1000 ways to skin this cat

 
Hey I just wanted to point out:
I have SO MANY quite workable AWE ideas, most of which I think would work well, not all by any means even involving Superturbine(R) technology at all.
Some of them are SUPER-simple, exploiting completely unheard-of theories of operation that, once you heard them, you'd slap your forhead and go "OMG why isn't anyone trying that???".
Some are based on what I've learned by running turbines, others are theoretical, but still utilize the experience gained.

It's kind of sad that the whole patent thing gets in the way of just disclosing all these ideas. Also sad that the well-funded agencies are stuck in bureaucratic "neutral", producing mostly large amounts of wasted time and paperwork, when they COULD have hundreds of proof-of-concept prototypes built and run using the same amount of funding if it were targeted efficiently.

Of course it probably wouldn't matter anyway since probably nobody would bother to build them anyway, when blogging is so much easier.
Nonetheless the concepts are there. Wish we had a high-throughput experimentation facility. Wish there was a way to get a bunch of skilled people building these to see what really works well.

We need a place with lots of equipment and materials and a good wind resource. (Oh wait that is my garage!) OK I could use some help here. Free lodging available. Come on down! (up!)

If you live in the high desert and want to have some fun, I have multiple test sites, full machine shop, a shipping container full of helically-wound carbon fiber tubes of all sizes, hundreds of off-the-shelf blades of all types, and the ability to turn out more.

need talented people to help push this cart over the crest of the hill to enjoy the long ride down the other side. No I don;t want people who want to jump ON the cart while I push - I need people who will actually push the cart (few and far between).

Also, to wish for such an agency begs the question: why not CREATE such an organization? Any billionaire with good business sense reading this: the technology is serious and I've already passed up multi-million dollar offers. With more types of wind turbine patented worldwide than any entity on the world, this is getting to be a bit much for a one-man effort. Let's combine your business acumen and my technology and change the world!

:)
Doug Selsam
:)
Doug Selsam


Group: AirborneWindEnergy Message: 4519 From: dave santos Date: 10/20/2011
Subject: Latest Tethered Aviation ConOps Draft (Call for Input)
This is a big messy job (making a good TACO), so anybody who can help with input is very welcome. Excuse the rough detail and formatting, but note the gradual progress in relating AWE to existing aviation standards-
 
DRAFT

Tethered-Aviation ConOps (TACO)

Case Focus on Experimental Airborne Wind Energy (AWE)

Provisional FAA Advisory Circular, and

Proposal-For-Action under ICAO Standards And Recommended Practices (SARPs)

Preface to the Draft
In 2010 the FAA and NASA called on the early AWE industry to define its new "energy aircraft" types into the FAA's Category & Class system, and develop a ConOps for AWE in US National Airspace (NAS). In response, the Airborne Wind Energy Industry Association (AWEIA) undertook this Tethered Aviation ConOps, to address all known requirements. "TACO" is an open living document; AWEIA member, KiteLab Group, maintains it on a volunteer basis. FAA and ICAO regulatory standards drive international practice, so this content is specially intended for a FAA Advisory Circular and ICAO Proposal-For-Action, to inform aviation stakeholders about AWE issues and operations. TACO covers the full scope of TA, not just AWE, building on sound existing models. This work is intended to merge into the NextGen Airspace ConOps. Send corrections, additions, & comments to santos137@yahoo.com
Acronyms
AKA-AmericanKitersAssociation; AOPA,-AirplaneOwners&PilotsAssociation; AMA-AmericanModelersAssociation: AWE-AirborneWind Enery; AWEC-AirborneWindEnergyConsortium; AWECS-AirborneWindEnergyConversionSystem; AWEIA-AirborneWindEnergyIndustryAssociation; AWEA-AmericanWindEnergyAssociation; ConOps-Concept of Operations; EAA-ExperimentalAircraft Association; ETOPS-ExtendedOperations; FAA-USFederalAviationAdministration; FARs-USFederalAviationRegulations; FBO-FixedBaseOperator, a small airport admin; FEG-FlyingElectricalGenerator; FSDO- FlightStandardsDistrictOffice, HAWP-HighAltitudeWindPower; ICAO-InternationalCivilAviationOrganization; LSA-LightSportAviation/Aircraft; METAR-Meteorological Aviation data Reporting format; NAS-NationalAirApace; NASA-NationalAeronautics&SpaceAgency; NextGen- NextGeneration aviation standards; NOTAM-Notice(s)ToAirMen; PIC-PilotInCommand; PIREP-PilotReport(s); R&D-Reasearch&Development; SARPs-Standards&RecommendedPractices; TA-TetheredAviation; TACO-TetheredAviation ConOps; UAS-UnmannedAviationSystem; sUAS-smallUAS; UAV-UnmannedAerialVehicle; VO-Visual Observer
Executive Summary
Tethering is a fundamental aeronautical engineering method to transfer force over distance to and from wings, anchors, and payloads. Tethered Aviation is a significant branch of aeronautics, with well-known instances like kites, aerotowing, and aerostats (Moored Balloons). New tethering concepts are expanding aviation capabilities; creating jobs, industries, and novel recreations. TA is even poised to generate abundant clean energy, as AWE, also known as "Kite Energy". This major new energy technology has a potential to subsidize, by airspace usage fees and excise taxes, the needs of populations and the dreams of aviation planners and general aviation. Stakeholders such as pilots, developers, regulatory bodies, & populations, are coming together to resolve lagging technical & social challenges. Tethered or not, acceptance-barriers persist to autonomous aviation in the US NAS (National AirSpace ). The standing FAA requirement for direct human supervision of UAS systems will hold for years yet. This early ConOps is thus "pilot-centric", embracing the pilot as a key stakeholder, but also forward-looking to validated autonomous flight (Appendix A).
The current aviation regulatory framework is mature, not broke; daily protecting public saftey at reasonable cost. Pilots are the primary workers in airspace most exposed to flight risk. Following aviation norms and traditions, pilots are leading R&D of safe effective TA. Pilot culture will ongoingly ensure safe operations in shared airspace. New pilots will be needed to fill the many flying jobs created. The aerospace industry must create systems that pilots accept and FAA inspectors (also pilots) certify airworthy. Policy developers & decision makers, from national to local levels, are another key stakeholder group. The well-informed stakeholders must work honestly to convince extended stakeholders (populations) that TA enhances society as a "good neighbor". TACO best-practice standards are a basis for public acceptance.
Aviation Self-Regulation Principle
The FAA relies on all aviation sectors, via user associations and industries, to help define & promote best practice of members. Failure of any sector to ensure safety brings down the full weight of government enforcement. Safe aviation operations presided over by responsible sector self-government allows the FAA to maximize its limited resources and regulate with a light touch. Accordingly, the Airborne Wind Energy Industry Association (AWEIA) has the formal mission of global leadership in self-regulation of AWE and related TA. TACO is AWEIA's core effort to coordinate Consencus Standards for safety and to acti as industry liason with regulators like the FAA & ICAO. AWEIA will petition the FAA for new Rulemaking, following the successful example of the Experimental Aircraft Association and FAA together creating a regulatory framework for the new LSA category. Similarly AWEIA will work within the ICAO framework to develop a core SARPs.
There are already urgent R&D safety issues AWEIA is addressing, such as obligatory sharing of safety-critical failure modes & mishap reporting. AWEIA is just one of several associations with overlapping interest in TA. AOPA & EAA have strong interests within the new sectors. Many practicioners will begin in TA from enthusiast communities: The American Kiters Association (AKA) governs recreational & professional kite operations. The American Modelers Association (AMA) is responsible for safe hobbyist aviation. User associations in soaring & other sectors that commonly perform tethered operations also have direct stakeholder roles. Wind energy industry standards promoted by AWEA will also apply to AWE operations.
TA Applicable Standards, Exceptions, and Exemptions
These sections present specific concensus standards for regulating TA. Some of it is rough FAA "boiler-plate" in process of being adapted to TA. An Applicable Standard is a operational manufacturing/design/maintenance/quality standard, method, technique, or practice approved by or acceptable to a civil aviation authority. An Exception is a case in which a rule, general principle, etc., does not apply. There are very few natural exceptions that apply to TA. An Exemption is approval to be free from current regulations in 14 CFR. Minimal need for exemption of TA from air regs is a goal of this ConOps
FARs Category, Class, & Type Certifications for TA
A first step is to newly define tethered wings (kites) as aircraft. Currently only airplanes, rotorcraft, gliders, and balloons are recognized Aircraft. A tether and associated motor-winch should be classed as an Engine when it conveys motive or bulk power. Ratings and Operating Limitations would be certificated just as reciprocating and rotary IC engines are. The notion of an Airframe remains the same.
FARs can be vague, confused, & contradictory; the classification scheme is a sort of patchwork. NextGen FARs are to overhaul classification, but ontological quirks will surely persist. The system offers wiggle-room, with exceptions, exemptions, and options possible at the discretion of even low-level FAA field authorities.
The profusion of new TA design Types can be roughly sorted according to the FAA's Aircraft/Airman/Operations Category, Class, & Type System. Categories naturally grow by adding Classes. Special TA Classes are proposed within current Categories. Just like any other aircraft,TA platforms can be classified by gross-weight & airspeed, by the same physics of "consequence". Weight & Speed (mass & velocity) are primary determinants of Class within a Category. In general higher mass/velocity Classes have Higher Consequence Failure-Modes & so require proportionally higher standards for equivalent safety (mortality to flight hours). Stall Speed is a key safety parameter, the lower the better, with the widest possible range of operation between max airspeed & stall speed.
Selected Aircraft Categories- aircraft, rotorcraft, normal, utility,acrobatic, commuter, transport, manned free balloon, glider, special, restricted, etc. As an example of how TA Class can apply across Categories, many given Types can be modified for aerotowing, with special restrictions accruing. Single/Multi-Engine Classes- Many TA applications have powered modes that naturally assign them to an Engine Class within a Category. The trade-off of getting improved reliability from multi engines is a higher standard of Pilot training & engineering design required.
As used with respect to the certification, ratings, privileges, and limitations of airmen, Class means a classification of aircraft within a category having similar operating characteristics. Examples include: single engine; multiengine; land; water; gyroplane; helicopter; airship; and free balloon; A major new class of Tethered Aviation is proposed. As used with respect to the certification of aircraft, class means a broad grouping of aircraft having similar characteristics of propulsion, flight, or landing. Examples include: airplane; rotorcraft; glider; balloon; landplane; and seaplane. A major new class of Tethered Aircraft or Kite is proposed.
Experimental and rare aircraft types are integrated by ad-hoc classification across multiple categories & classes. Aviation is increasingly diverse and major new branches may become wholly new Categories.
Provisional Sub-Classes- Tethered-Aerobatic, Tethered-Single-Engine (or turbine), Tethered-Multi-Engine (or turbine), Tethered-Normal, Utility, Sport, Ultralight, Moored-Balloon, Aero-Towed Glider, Tethered Rotorcraft.
Some Categories and Classes of aircraft & operations are mixed, overlap, or are interrelated. For example, a UAS (type) might be operated as a Commercial or Private Aircraft.
Small Aircraft- 12,500 pounds or less, maximum certificated takeoff weight.
A statement of compliance (SOC) is a signed statement made by the aircraft manufacturer stating that the aircraft (specific by serial number) was designed, manufactured, and is supported with a monitoring and correction of safety-of-flight within a continued airworthiness system, following Consensus Standards.
Tethered Aircraft (TAC) that operate aerobatically & incur high G-loadings are Acrobatic Category (limited to 12,500lbs gross). Tether-Weight counts toward rated gross weight. Tether-Drag counts against rated L/D. Autonomous Flight of high-consequence platforms (high mass &/or velocity, especially around populations) require a proportionately more cautious rigorous path to validation & certification.
AWECS are generally high-duty UAS & so merit Utility designation. According to gross weight they can be sorted into Ultralight, Sport, Normal, Commuter, & Transport Weight & Airspeed Categories.
Operational altitude is a major category criteria. Some relevant ceilings- 400ft for low mass low speed hobbyist model aviation. 500ft as a "floor" for general VFR aviation. Class G airspace, which is low, but variable, with higher ceilings in remote areas, 2000ft obstruction regulations for mast & tower certification, 18,000ft as an "absolute" ceiling to avoid transport aviation operations. 25,000ft is the defined theshold of High-Altitude flight, with special applicable standards.
Note: Many current tethered vehicle platforms are not formally designated as "Aircraft" in Aircraft Categories under current FARs, but the FAA reserves a right to designate them so. Tethered aircraft must be formally designated as aircraft to be regulated for airworthiness in the existing framework. Any conventional aircraft can in principle be put on a tether, which does not negate its status as a legal aircraft of a given mass & speed envelope, but adding a tether adds operational complexity and hazard. Tethered aircraft may someday need to be Type Certified in a suitable new Category or special Classes.
Pilot Categories & Training
Training and testing pilots is fundamental to all aviation. All pilots in TA-shared airspace need awareness of new operations & conditions. TA pilots must master basic aeronautical training, plus specialized knowledge and operational proficiency. As high-consequence risk emerges by more powerful industrial-scale systems, TA Pilots must meet equivalent standards of certification to Transport Pilots.

Sec. 61.31 — Type rating requirements, additional training, and authorization requirements.

Operational Categories
Airspace- Obstuction Reg altitude (
Multi-Tether Systems are comparable to Multi-Engine Aircraft, with similar engineering trade-offs. The increase in operational complexity, by added redundancy, can actually enhance safety.
Large- Light, UltraLight-
A tether is a significant flying object, an obstuctional hazard requiring great respect. Tether geometry and operational methods are unique TA features to account for, but with useful similarity to standard geometry flight trajectories & operations like cable rigging and skydiving.
Electrically Conductive Tethers require special standards addressing unique safety issues. Formations of aircraft joined by tethers into dense-arrays is an major operational configuration to validate. A goal is that dense-array methods greatly enhance general aviation safety & reliability.
Aircraft Types operate in diverse roles and regulations allow for this. Sample Operational Categories- Transport, Normal, Utility, Acrobatic, Limited, Restricted, and Provisional. Provisional uses are defined as needed- STOL, High Altitude, Marine Environment, Unmanned, IFR, Weight & Speed Cats., Obstruction, & so on.
Super Density Operations (SDO)
It is proposed by the FAA that some AWECS might operate under Obstruction Regs such as govern Antenna Farms, but this model is partial. For example, an antenna-farm Obstruction is also regulated under mast & tower structural codes outside the purview of the FAA. Towers lack many inherent hazards related to aircraft airworthiness & a potential to crash far afield (runaway). An AWECS is not a tower & needs to comply with Airworthiness Standards.
Current TA Norms & Regulations
The FAA's mandate to maintain a safe NAS covers TA activity but existing regs need upgrading to cover holes in safety and allow enhanced capabilities. Certificating airworthiness within current regs prevents TA R&D from creating a "menace-to-aviation". Most AWE venture starts have no formal aviation background & face acculturation along an FAA approved path. Class G Airspace is the primary realm of current TA R & D.FSDOs are the current arbiters of allowable experiments, with decentralized flexibility. AWE R & D can shop around for a "best-fit" FSDO (generally remote low-traffic NAS regions). Special Airworthiness Certificate in the Experimental Category is the certification currently available to civil operators of UAS. NOTAM & COAs allow pioneering AWE R & D to occur.
Obstruction regs, such as apply to antenna farms, can partly serve for persistent "static" TA operations under 2000ft AGL.Shielded operations is an option for a TA operator able to identify sites.
Draft FAA s UAS regs call for Pilot-in-Command & Visual Observer crews. A misconception in the AWE field is that autonomous operations will permissible in a short time-frame of a year or two, but the safer bet is that many years must pass before the required safety & reliability is validated & permitted.
Key Title 14 Parts of the Code of US Federal Regulations (Aeronautics & Space)

PART 101 - MOORED BALLOONS, KITES, UNMANNED ROCKETS AND UNMANNED FREE BALLOONS

Part 77 - OBJECTS AFFECTING NAVIGABLE AIRSPACE

The FAA regulates skydiving activity as"Parachute Operations" Part 105 (14 CFR 105). Flight operations for skydiving are conducted under Part 91 "General Operating and Flight Rules" (14 CFR 91).
FAA Advisory Circulars provide additional guidance about operations. A TAConOps circular is a logical step.
Banner-Towing & Glider Aero-Towing regulations inform equivalent operations in other applications.
Recreational NAS use covered by FAA Advisory Circular (AC) 91-57; generally limits operations to below 400 feet ASL well separated from airports & air traffic. This is the appropriate place for virtually all current AWE developers to conduct most experiments without being a "menace to aviation".
Three acceptable means of operating UASs in the NAS: 1) within “restricted” airspace: or under a Special Airworthiness Certificate (2) Experimental Category or (3) Certificate of Waiver or Authorization (COA). A COA authorizes an operator to use defined airspace under specific provisions unique to the operation. It may require Visual Flight Rules (VFR) & operation only &/or during daylight. COAs are issued for a specified time period; one year typical. COAs require coordination with air traffic control & may require a transponder in certain types of airspace.
Sense and Avoid Standard
A sUAS's current inability to autonomously follow ”sense and avoid” rules means a ground observer (PIC &/or VO) must maintain visual contact operating in unrestricted airspace. The VO must also maintain aural vigilence in a quiet enough setting to detect airplane intrusion before visual spotting.
"Sense & avoid" UASs requirement currently means PIC (Pilot-In-Command) & VO (Visual Observer), plus dive or kite-kill capability.
Possibility of special IFR Rules clearances, especially higher operational ceiling during graveyard shift to help bridge night-time inversion.
ETOPS Regulations for AWE
 
Extended Operations is a basic condition for AWE, so a tailored set of FAA ETOPS regs is needed.
Terminal Collision Avoidance System (TCAS) -
TCAS III utilizes interrogation of, and replies from, airborne radar beacon transponders and provides traffic advisories and resolution advisories in the vertical and horizontal planes to the pilot. TA should use multiple transponders and develop trajectory reporting according to the emerging NextGen standard.
TA Operations Notes
Tethered Aviation operations entail particular hazards. A tether is a vulnerable and dangerous obstacle extending almost invisibly over large distances. Navigation markers are an established requirement & will long continue un use. Filing daily NOTAM are an essential procedure in many airspace regions. PIREP are another messaging tool. with Mayday as the most extreme instance.
Separation, Avoidance, Visibility, & Education (SAVE) is a useful mnemonic for the basic principles of safe TA operations. S is for passive Separation; the relegation of TA operations to remote low-traffic airspace; A is for Avoidance; the effective evasive capability of a TA platform (ie. "kite-killers"). V for Visibility is the standard for obstruction markings, transponders, radar-reflectance, etc.. E for Education is the requirement to appropriately inform & train all pilots operating in proximity to TA, as well as the special Type-Rating knowledge a TA PIC needs.
Separation- Default minimums, flight planning, exclusion zones,
Avoidance- Kite killers, PIC/VO, transponders, TCAS,
Visibility- Signal lights and markings. A five-mile visibility standard is proposed to supercede the current one mile balloon/kite regs.
Education- General and specialized training of all flight stakeholders.
 
Dense Arrays
A major class of TA is arrays of crosslinked wings. The 155lb UltraLight Vehicle Maximum is proposed as a Consencus Standard AWE wing unit maximum for large arrays. Multi Line Requirement- The highest standard of safety from Breakaway Mishap.
Concern- AWECS noise can mask the noise of intruding air traffic (An airplane is often heard before seen, helping "sense & avoid".).
Special TA Risks
Mid-Air Collisions- Tether trajectories and aerobatic patterns of fast moving AWE kiteplanes can catch a VFR pilot unwares, otherwise Mid-Airs are not a major hazard. Sense and Avoid is the Consencus Standard. UAS must give way to all manned aircraft.
Breakaway, Tether Dragging
A Breakaway of a kite from its anchor generally results in the kite gliding down to the surface in large circles. A kite generally lands 4x its altitude away from its breakaway location.
Tether Dragging is a most dangerous condition where a kite dragging its anchor or junk sustains flight for an indefinite distance. This hazard should be known and planned for by population first-responders.
Conductive-Tethers, Electrocution, Shorted Grids, WildFire, Lightning. FAA discourages unpressurized Magnetos above 14000ft due to corona "crossfiring".
Security concerns range from vandalism to terrorism and are proportional to the inherent risk of an operation and the measures takem to offset them.
Surge Loads- Strain limits, Safety Factor 8
UV degradation, Freeze damage, Mud Daubers in Pitots, Bird Nesting in Airframe cavities,
AWECS Documentation
Configuration, Maintenance, and Procedures (CMP) Document. A document approved by the FAA that contains minimum configuration, operating, and maintenance requirements, hardware life-limits, and Master Minimum Equipment List (MMEL) constraints necessary for an airplane-engine combination to meet ETOPS type design approval requirements.
FAA certification offices provide airworthiness certification or related approval: Manufacturing Inspection District Office (MIDO), Manufacturing Inspection Satellite Office (MISO), Flight Standards District Office (FSDO), International Field Office (IFO), Certificate Management Office (CMO), or CertificateManagement Unit (CMU).
Production Approval Holder. A holder of a production certificate (PC), an approved production inspection system (APIS), a parts manufacturer approval (PMA), or a technical standard order (TSO) authorization who controls the design and quality of a product or part thereof.
Prototype and Production Manufacturing Standards
Conformity Inspection of Prototype Products and Related Parts. An inspection to determine the applicant’s compliance to 14 CFR part 21, Certification Procedures for Products and Parts, § 21.33(b) and any other inspections necessary to determine that the prototype products and related parts conform to the proposed design drawings and specifications.
Conformity Inspection of Production Products and Related Parts. An inspection that may be necessary to determine that completed production products and related parts conform to the approved type design and are in a condition for safe operation.
Designated Airworthiness Representative (DAR) - Maintenance. An individual appointed in accordance with § 183.33 who holds a mechanic’s certificate with an airframe and powerplant (A&P) rating under 14 CFR part 65, Certification: Airmen Other Than Flight Crew-members, or a person who holds a repairman certificate and is employed at a repair station certificated under 14 CFR part 145, Repair Stations, and who meets the qualification requirements of this order.
Designated Airworthiness Representative (DAR) - Manufacturing. An individual appointed in accordance with § 183.33 who possesses aeronautical knowledge and experience, and meets the qualification requirements of this order.
Ground Operations-
Preventive Maintenance. Simple preservation operations and replacement of small standard parts. These constant routines are usually supervised or performed by the PIC.
Production Approval Holder. A holder of a production certificate (PC), an approved production inspection system (APIS), a parts manufacturer approval (PMA), or a technical standard order (TSO) authorization who controls the design and quality of a product or part thereof.
Designated Engineering Representative (DER). An individual appointed in accordance with § 183.29 who holds an engineering degree or equivalent, possesses technical knowledge and experience, and meets the qualification requirements of this order.
Conformity Inspection of Prototype Products and Related Parts. An inspection to determine the applicant’s compliance to 14 CFR part 21, Certification Procedures for Products and Parts, § 21.33(b) and any other inspections necessary to determine that the prototype products and related parts conform to the proposed design drawings and specifications.
Conformity Inspection of Production Products and Related Parts. An inspection that may be necessary to determine that completed production products and related parts conform to the approved type design and are in a condition for safe operation.
TA Excise Taxes & User Fees
AWE taps airspace as a source of vast energy. E nergy markets pay excise taxes; 5% of a producer's selling price is typical. Unlike non-renewable energy sources, which eventually run out, renewables can generate excise revenue in perpetuity. B arriers to broad AWE societal stakeholder acceptance, like NIMBY (not-in-my-back-yard) forces, will melt before a rich new tax base that more than offsets any negatives. The average citizen who does not fly or own aircraft still shares a birthright to the airspace commons. An equitable AWE Excise Tax can make a huge contribution to basic social welfare & a new era of sustainable prosperity for all.
Airspace access is by international legal tradition a Public Commons based on the doctrine of Freedom-of-the-Seas. There is stiff resistance by existing aviation stakeholders to privatization of NAS as some venture-capital AWE stakeholders propose. Utility-scale AWE operations can contribute to shared airspace by paying Excise Taxes on energy extracted & maybe even special Airspace User Fees.Airspace User Fees is a toxic to existing aviation, but makes sense for the economic windfall promised by some of the new types of aviation.
The AWE industry can thus earn aviation stakeholder acceptance by subsidizing common airspace infrastructure benefiting all. AWE tax revenue can offset existing FAA costs, relieving the overall Federal budget, pay for NextGen infrastructure, guarantee liability performance, & fund publicly-shared AWE R & D. The early industry requires a phase-in period for taxes, so as to not choke off early investment & to promote initial growth. As significant mature AWE revenue-base develops, & airspace becomes widely impacted, the tax base can be tapped. Small-scale personal AWE operating at low altitudes should be exempted commercial taxes.
Insurability
Like all aviation, TA operations must carry Liability Insurance proportional to risk. Such insurance is currently unavailable from traditional providers. An industry self-insurance pool may be needed to jumpstart liability coverage. Secondary coverage, like Hull Insurance, can await market solutions. A wrongful death these days can cost some ten million USD. The insurability guaranteed by an excise endowed fund can ensure that a financially weak AWE player in a freak-accident (even an unknown failure-mode) event does not leave victims or families uncompensated.
Environmental Impacts
Bird Issues-
Birds (and bats*) have a primordial right to airspace, but can present a hazard to human aviation and are themselves at risk by activities like conventional wind power generation, night lit towers, etc.. The problems are increasingly well known and mitigation is an ongoing process. AWE can mostly build on existing bird management practices, adding new protocols as needed.
Migratory species in transit are most vulnerable to disturbances, but follow fairly predictable seasonal patterns, helping risk mitigation. Conventional windfarms can cause wholesale slaughter of flocks, so regulations are emerging to curb seasonal risk. Sense-and-Avoid capability of AWE systems might serve to give clearance to migrating formations. Sense-and-Warn might also work, but is an open study.
The presence of endangered bird species or high bird populations raise the urgency of bird issues. Nesting birds can be stressed by looming kites, acting out predator response behaviors. In extreme cases birds will abandon active nests, but in other cases birds adapt to kites and even seem to exploit some operations as defensive cover. Generally year-around birds exposed to kite operations adapt well, fully habituating, showing no stress response. Birds that first encounter kites can react by fight-or-flight response. Hawk kites scare birds away and might be a useful management tool, but birds are intelligent and often learn to ignore an empty threat. Young birds can act quite different to the same cues than their more experienced parents.
Flying birds are most common near the surface and become rare with altitude, with few exceptions (like migrating snow geese over high mountains). AWE at higher altitude therefore seems potentially far more bird friendly that wind towers. An exception is the tendency for birds to shun a looming flying object, while relaxing if overflying, a predation response. Its probable that wind energy operations change bird species distribution of their area. Towers are known useful to raptors, and turbine killed birds can attract scavengers. AWE has the potential to reduce such changes. AWECS and other aerial structure should be minimally visible to birds even at night, by white markings. Black or dark red markings by day usually give the farthest warning to air traffic for easy avoidance.
Visibility reduces air hazards. FAA nav markings intended to warn pilots of close proximity also serve to clue birds. Turbines that make noise and have red painted tips to delineate the disk area probably better warn birds. Fast-moving lines are a special hazard, potentially acting as a saw. Painting alternate black (or red) and white marking on moving line could help by making the motion visible. Fog has disoriented migrating birds, which in some cases cue in on artificial lights like radio mast warning lights. We should anticipate these rare events and find solutions proactively. A proposed method is to radar detect airtraffic and only then activate mast and tower warning signals. Another idea is to create clear migration corridors, well chosen gaps in the wind farm pattern, for birds to follow.
The design of an AWECS can range from benign to deadly to birds. Where bird issues are most sensitive, the slower, softer, more visible systems are favored. Although direct data is scant, its probable that fast moving kiteplanes flying ae constitute the same sort of hazard to birds as large conventional turbines. Many birds seem to have a hard time detecting or understanding the threat of a large fast-moving object on a highly curved trajectory, but do better avoiding an aircraft on a set course.
Birds easily see and avoid large slow moving tethers and kites, with no known mortality factor. Birds often do not see the fine lines on toy kites and collide with them, usually with no bad effect, although a small potential for injury exists. Classic kiting is bird friendly, with the exception of fighter kites with cutting line. Some South Asian traditions even regulate the kite-fighting season based on bird presence. Fallen line should always be collected to avoid snaring wildlife.
The risks are two-way. A bird strike can bring down almost any airplane by varied damage. Engines can be damaged enough to stop. Control surfaces, windscreens, pitot tubes, antennas, radardomes, etc. can be made inoperable. A kiteplane is subject to bird-strike risk, it can be blinded, brought down or breakaway, creating risk off-field. Birds can create a nuisance to ground equipment, nesting in cavities and fouling surfaces with droppings.
Bird study is a part of AWE site assessment. Baseline bird presence should be determined before a kite farm is established and bird presence tracked for ongoing impact detection and mitigation. Qualified independent biologists should be relied on to develop flexible management plans to meet high standards.
In conclusion, AWE and birds can seemingly coexist well, but its up to designers and operators to make sure adverse impacts are minimal.
*Bats are presumed to resemble birds in their general relation to AWE, but with a more nocturnal presence.
Noise Issues
Turbines on resonant composite wings can be quite noisy, sounding like an IC engine or high-speed machinery. Slower large scale oscillating wings can create booming and infrasound noise pollution. The noise can range from "washing machine" to "ocean wave". Noise issues with AWE can be judged by extending the standards of AWEA.
APPENDIX A
TACO/Nextgen Transformation Path
The iterative-spiral process toward NextGen Integration-
Forward-Looking TACO:
The TACO Draft focuses mostly on near-to-mid-term AWE R & D. The forward-looking capabilities referenced below derive from the NGATS Vision Briefing of 2005 toward the NextGen Airspace CONOPS for 2025. Mature Tethered Aviation Operations (TAO) shall conform to these standards-
Notes:
Supervisory Override of Semi-Automated Flight is a bridge technology
NextGen's Moving Constrained Airspace is a capability needed for Tethered Free-Flight development
EVFR rules for relaxed visibility will widen the TA flight envelope & be a bridge to Autonomous IFR .
==============
APPENDIX B
Case Study- Small Airports Accomodating AWE R&D
A common myth in popular AWE reportage is that existing aviation norms and interests will impede progress. Its a reasonable sounding theory, and restrictive standards do apply in congested airspace, pending NextGen air traffic control, but such airspace is only a tiny fraction of world airspace, even in aviation intensive regions. In fact, existing small aviation operations will embrace TA adoption and help perfect it. The latest sign is a growing list of small airports willing to host AWE R&D, as a new aviation niche market. Due to corporate NDAs , which small airports are already developing programs, but face-to-face meetings with airport administrators and their stakeholders (aviators, aero clubs, skydivers, etc.) confirm an early consensus that AWE can coexist with general aviation, that the operational issues are manageable . The stakeholders are eager to validate new multi -use aviation.
A common profile is a struggling airfield with good winds and low air traffic. Administrators informed about AWE aviation and the specific means to integrate it safely into existing operations get excited at the possibilities. A cautious step-by-step plan is appropriate. Usage fees and partnership agreements are a revenue basis. There will be plenty of eager FBOs (Fixed Base Operators (of small airfields).
 
Many airports have large open fields in the spaces around runways. As has been noted, small airports with a second crosswind runway have an interesting potential to host crosswind AWE generator vehicles on the idle runway. Two orthogonal paved runways can do the job of adapting to wind direction almost as well as a far more expensive paved field open in all directions. Conductive contact strips can be embedded along the runway to tap energy for the grid.
There is an invisble airfield traffic pattern to keep clear of. In an emergency, the whole airspace needs to be clear. Shared airspace around an airport depends on all aircraft being able to "sense and avoid".
Suggested consencus safety standards for AWE operations at an airport-
-------------------------
TA Structural Limits
Tethers and membranes have special structural characteristics and dependent operational methods.
Ground Anchors are a critical component of many TA classes. Civil engineering and soil geology must interface with tethered flight systems seamlessly, thus these fields become aviation related.
Load cases with time steps are used for various analysises. Static stress analysis with linear material models/ Each load case has a set of forces, moments and nodal deflections. For natural frequency (modal) analysis each load case presents one mode shape and frequency. The first load case is the first natural frequency, second case- second frequency, and so on. In heat transfer, each load case is a time step in transient analysis.

Petition for Exemption or Rulemaking - FAA: Home

Group: AirborneWindEnergy Message: 4520 From: dave santos Date: 10/20/2011
Subject: Pete Lynn Jr Wayback When
Pete Lynn (Jr) is one the best AWE theorists and experimenters and was very influential a few years back, but seems to have laid low since under the Google/Makani NDA blanket.. Yes, his famous father is also scheming how to tap the sky and we have all learned a lot the last five years. Keep an eye on the Lynn Dynasty...
 
This is rare content, new to me, from 2004-5 accessed from a wayback archive; a copied link from NASA's funereal AWE website-
 
 
Group: AirborneWindEnergy Message: 4521 From: dave santos Date: 10/21/2011
Subject: Safety Aloft (Kite-Based Sky-Climbing, "Manlifting")
Ever since Eideken fell from the Sky, "Manlifting" has been a taboo activity in classic kiting. Its pretty much the one and only rule the AKA has; your million dollar member insurance policy is void if you use your kites to levitate. But in the new kite sports people are flying all over, living large or dying horribly; its a mixed picture. As the Siren Call of the Sky cannot be denied, here are the basic precautions available for safe flight-
 
Group: AirborneWindEnergy Message: 4522 From: Joe Faust Date: 10/21/2011
Subject: Re: Safety Aloft (Kite-Based Sky-Climbing, "Manlifting")

1.  ETOPS     

2.  Known since 2002 are over 850 fatalities in just paragliding alone .  Gliding kites with man or woman aboard. This does not include skydiving or BASE jumping or kiteboarding , etc.

Group: AirborneWindEnergy Message: 4523 From: dave santos Date: 10/21/2011
Subject: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "Manl
JoeF,
 
Noting ETOPS is an evolving expanding often-revised FAA standard. In AWE, Flight Operations are greatly extended in time, so new ETOPS rulemaking on this basis is proposed. We are the developers of these rules, as a Consensual Standard.
 
Meanwhile, lets use AWE ETOPS as a generic term for issues of persistent flight of our AWECS,
 
daveS
 
PS 850 sport paragliding fatalities is a lot!
 
 

From: Joe Faust <joefaust333@gmail.com
 
1.  ETOPS     
2.  Known since 2002 are over 850 fatalities in just paragliding alone .  Gliding kites with man or woman aboard. This does not include skydiving or BASE jumping or kiteboarding , etc.


Group: AirborneWindEnergy Message: 4524 From: Doug Date: 10/22/2011
Subject: Re: Safety Aloft (Kite-Based Sky-Climbing, "Manlifting")
I used to hang glide while still a high school student in 1974 - first built my own that sucked then got an Eipper that I flew a few times til I sold it to buy a motorcycle.
One thing I was known for in high school was my idea for a "backpack helicopter". I see people trying to make them to this day. That's still on the back burner of my feeble mind, to this day.
So I am compelled to try some kind of person-lifting flying machine - I imagine myself using a manlifting kite or something like that, but I also imagine that moment where you are heading toward the ground really fast trying to figure out how you are going to get out of this one before you hit. Yikes!
Thanks for all the details Dave S.
:)
Doug S.

Group: AirborneWindEnergy Message: 4525 From: dave santos Date: 10/22/2011
Subject: Rare Makani Flying Wing Image (plus Flight Dynamics Analysis)
One of the mysterious sidetracks of Maknai's R&D was a few years of flirtation with Flying Wings. We saw these airframes in all sorts of publicity images, from dark artistic renderings of a sterile future, to hip engineers attending the wings in the lab. One was a prop in Washington DC, at ARPA-Es coming-out party.
 
The KiteLab analysis of Makani's choice of configuration was that such wings were subject to all the known vulnerabilities of such wings, plus new tether-induced failure-modes. These wings were inherently unstable on the yaw axis, with a perilous flat-spin mode and not enough forward vertical surface to easily make it through the bottom of the power loop. The only "safe" tether looping mode available to it was a strenuous roll-and-pitch input (actuator churn and saturation) that the long wing would resist by excessive roll stability. With its tip fins as hooks the gangly wing could fatally snag its tether if anything went too wrong with the flight pattern. It also was clear these wings could only land as VTOL tail-sitters or by smashing into a cradle. So the prediction was that this wing was doomed, that it would crash in testing. Makani has not admitted ever crashing a composite wing, but the prediction still stands, if they ever want to deny it.
 
Finally a much different more conventional airframe publicly emerged (Wings 6-7). The sudden appearance of a conventional T-tail was even touted as a "breakthrough" by PM. The big unsung "kite" fix was to add forward vertical airfoil surface in the form of large motor and component pylons, so the aircraft could now loop naturally without rolling hard or falling out of the bottom phase. This painful learning curve took years and millions that many an experienced RC hobbyist or aircraft designer would not have needed. Some hint of inner turmoil at Makani and Joby were big lay-offs while making belated hiring offers to flight dynamics gurus to help make fixes.
 
Below is a link that contains a Makani Flying Wing in flight. Its only shown in basic kite mode, with side tag-lines to constrain it. We may never get to see the videos of what happened when these wings were tested in power loops, likely to protect the crafted PR image that typifies Google's oversold ventures.

----- Forwarded Message -----
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News1 new result for makani power
 
Google: Why the Cloud is Green
Sustainable Business Forum
A computer scientist with a Stanford PhD, Urs wasn't an energy guy. ... for rooftop solar, to Makani Power, which is developing airborne wind turbines. ...
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Group: AirborneWindEnergy Message: 4526 From: christopher carlin Date: 10/23/2011
Subject: Re: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "
ETOPS is largely driven by concerns for engine reliability and distance from a safe landing place in case of engine failure. I think it would be quite a stretch to apply it to AWE except to use it as a precedent for special rules to address new concepts.

chris
On Oct 21, 2011, at 8:25 PM, dave santos wrote:


Group: AirborneWindEnergy Message: 4527 From: dave santos Date: 10/23/2011
Subject: Re: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "
Chris,

While existing ETOPS rules have nothing directly to do with AWE, the underlying abstraction of "extended operations" is far broader than the initial civil aviation case and include our persistent-flight operations. Similarly, many aspects of existing aviation regs can be cloned or reused for rapid development of AWE. This is just basic modern enterprise design. What is proposed is to leverage the aviation pattern language and inherit many of the existing class parameters. So "AWE ETOPS" is just an intuitive new class of an ETOPS category, as a default, pending some better classification scheme. Feel free to rename AWE ETOPS, if you find the usage too confusing, but you will find the same object-oriented enterprise strategy across the entire TACO.

We are not trying to "stretch" the existing framework and break it, but extend it logically. The existing reg framework already is highly object oriented (aircraft/pilot rating, category, class, type, etc). If we had to invent AWE regs from scratch, we would still be at square one,

daveS
   
Group: AirborneWindEnergy Message: 4528 From: Bob Stuart Date: 10/23/2011
Subject: Re: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "
Could we have a glossary for those acronyms please?  This has become gibberish to me.

Bob Stuart

On 23-Oct-11, at 3:12 AM, dave santos wrote:


Group: AirborneWindEnergy Message: 4529 From: Doug Date: 10/23/2011
Subject: Re: Rare Makani Flying Wing Image (plus Flight Dynamics Analysis)
21st Century Phlogiston!

Group: AirborneWindEnergy Message: 4530 From: Doug Date: 10/23/2011
Subject: ETOPS //Re: [AWECS] Re: Safety Aloft (Kite-Based Sky-Climbing, "Manl
Gibberish is a good word. Who could even read thru it all?
Imagine all the millions of dollars, and thousands of hours of peoples' time, to construct models for government-sponsored trade shows, for people from around the world to come and worship, on expensive fossil-fueled jet flights. I guess they are confused and don't know what else to do. After all, they spent so many years in school, to make sure they would "never have to work". Why start now? Why actually DO anything when you can talk talk talk, or fund another rendering? Hint: what are those grasping thingy's on the end of your arms? (try learning to use them). :)

Those people shift from doing nothing at their home office, to getting together in large groups, to do nothing together. The main qualifications are:
0) Don't actually DO anything
1) you have to SAY you're doing something;
2) You have to SPEND a lot of money;
3) You have to issue PRESS-RELEASES saying you are doing something;
4) RENDERINGS make it all sexy, assuming you even have enough of a direction to cite a certain structure at all, as opposed to just issuing a blanket statement to the press that you're "working on it".
5) When in doubt, see rule 0.

Imagine all those resources actually focused on developing an actual working solution, full time, instead of squandered on fantasies and renderings.
Imagine the talents of people falling all over themselves to create rules regarding possible apparatus that is completely undefined, instead focused on developing flying machines that can deliver electricity to the ground. Imagine all this wasted activity based around endless discussions, at great expense in time, attention,and money, of harnessing megaWatts at 4 miles height, when they can't keep anything working at any scale, any power level, even at 40 feet, without using a conventional tower.

We in wind energy have heard it all so many times. The purveyors of these sorts of frauds literally end up in jail in the few instances when justice prevails.

In "cutting-edge" or "advanced" wind energy technology, the 99% are the idiots who never even "get it" to start with. They imagine they are in a Formula-1 or Indy-Car race where their wheelbarrow is so superior it can suddenly be in first place without having to even pass anyone! Their endless pronouncements have all the showmanship of the bragging in professional wrestling, except these people can't even climb through the ropes into the ring, let alone body-slam anyone to the mat!

In wind energy, the rule seems to be "those who know don't talk, and those who talk, don't know.

Doug Selsam

Group: AirborneWindEnergy Message: 4531 From: dave santos Date: 10/23/2011
Subject: Acronyms, Practicioners v. Bystanders //Re: ETOPS
Bob,
 
The Acronyms your requested are pasted from the TACO below.
 
A reminder to Doug about aviation norms and on-topic posting. If large-scale AWE is to be judged airworthy by aviation authorities, suitable standards must be in place. AWEIA and KiteLab are at the fore in developing'adapting the needed regs*. This does no correlate with his repetitive"just talk" complaint, as KiteLab is far more hands-on flight-oriented in AWE than USWindlabs. Besides, drafting regs is relaxing after constant building and testing of hardware. Those who fail to master safety-critical regs should be bystanders rather than practitioners.
 
Note to Chris: How about we create a new category of operations named EndurOps or PersistOps, to avoid semantic confusion with a narrow use of EXTOPS?
 
daveS
 
* Especially for RAD
 
Acronyms
AKA-AmericanKitersAssociation; AOPA,-AirplaneOwners&PilotsAssociation; AMA-AmericanModelersAssociation: AWE-AirborneWind Enery; AWEC-AirborneWindEnergyConsortium; AWECS-AirborneWindEnergyConversionSystem; AWEIA-AirborneWindEnergyIndustryAssociation; AWEA-AmericanWindEnergyAssociation; ConOps-Concept of Operations; EAA-ExperimentalAircraft Association; ETOPS-ExtendedOperations; FAA-USFederalAviationAdministration; FARs-USFederalAviationRegulations; FBO-FixedBaseOperator, a small airport admin; FEG-FlyingElectricalGenerator; FSDO- FlightStandardsDistrictOffice, HAWP-HighAltitudeWindPower; ICAO-InternationalCivilAviationOrganization; LSA-LightSportAviation/Aircraft; METAR-Meteorological Aviation data Reporting format; NAS-NationalAirApace; NASA-NationalAeronautics&SpaceAgency; NextGen- NextGeneration aviation standards; NOTAM-Notice(s)ToAirMen; PIC-PilotInCommand; PIREP-PilotReport(s); RAD- Rapid AWE Dev; R&D-Reasearch&Development; SARPs-Standards&RecommendedPractices; TA-TetheredAviation; TACO-TetheredAviation ConOps; UAS-UnmannedAviationSystem; sUAS-smallUAS; UAV-UnmannedAerialVehicle; VO-Visual Observer
Group: AirborneWindEnergy Message: 4532 From: dave santos Date: 10/23/2011
Subject: Re: Rare Makani Flying Wing Image (plus Flight Dynamics Analysis)
Doug,
 
Read the wing review properly to note that aeroengineering mistakes are being corrected and that Google's pick looks closer to AWE than you are. Sure Makani has futzed, wasted millions, surfed on hype, and cannot meet time or reliability goals, but this sort of AWE is not a wholly imaginary concept like Phlogiston, just premature. Perhaps the SuperTurbine best fits the AWE "unobtainium" critique, and Makani, weak as they are, would humble US WindLabs in any fly-off. But if they did, Kitelab would avenge you with a large quiver of toy kites ;^)
 
daveS
Group: AirborneWindEnergy Message: 4533 From: Darin Selby Date: 10/23/2011
Subject: Re: How to obtain unobtainium?
Dave, I beg to differ.  Doug's methods and ingenuity are paving the way for the rest of us to follow.  How could SuperTurbine be placed in the AWE "unobtainium" catagory?   Not only did Doug obtain some of that elusive unobtainium, he learned how to transmute it into that even rarer element, OBTAINIUM!   This cosmic seed has already been formulated.  Just keep on watering it with attention!


To: AirborneWindEnergy@yahoogroups.com
From: santos137@yahoo.com
Date: Sun, 23 Oct 2011 09:28:36 -0700
Subject: Re: [AWECS] Re: Rare Makani Flying Wing Image (plus Flight Dynamics Analysis)

 

Doug,
 
Read the wing review properly to note that aeroengineering mistakes are being corrected and that Google's pick looks closer to AWE than you are. Sure Makani has futzed, wasted millions, surfed on hype, and cannot meet time or reliability goals, but this sort of AWE is not a wholly imaginary concept like Phlogiston, just premature. Perhaps the SuperTurbine best fits the AWE "unobtainium" critique, and Makani, weak as they are, would humble US WindLabs in any fly-off. But if they did, Kitelab would avenge you with a large quiver of toy kites ;^)
 
daveS

Group: AirborneWindEnergy Message: 4535 From: dave santos Date: 10/23/2011
Subject: Re: Obtainium v. Unobtainium (SuperTurbine(R) note, *sigh*)
Darin,
 
We agree that Doug is a very productive force in AWE.
 
A speparate issue is that SuperTurbine drivetrain concepts face formal scaling laws, and biomimetic and engineering models, which seem to predict unworkability for upper-windpower. This analysis has been presented in great detail on this forum. Its not necessary to tediously refute these predictions point by point (nobody has). Far better is to convincingly demonstrate, by cheap safe robust means, that the predictions were mistaken. Doug has many other ideas with a better prognosis. You have had great ideas.
 
You and Doug can also celebrate the many other honest, if flawed, early prototypes worldwide. Get ready to see many more soon. Please hopefully add superior machines to this Party,
 
daveS
 
 

   .



Group: AirborneWindEnergy Message: 4536 From: Muzhichkov Date: 10/23/2011
Subject: Module generator
Group: AirborneWindEnergy Message: 4537 From: dave santos Date: 10/23/2011
Subject: Visionary AWE Artwork
Maybe this never yet made the AWE forum, but its very classy:
 
Aug 18, 2010Colombian landscape architecture studio, Paisajes Emergentes, created the most visionary AWE CGI for a kite-energy project proposed for Abu Dhabi. I especially like the night spectacle (follow links), evoking the classic architectural presentation renderings of Hugh Ferriss.
 
They probably need our help...

Energy-Generating Kite Park Offers Extreme Green ... - Inhabitat

 
Group: AirborneWindEnergy Message: 4538 From: Pierre Benhaiem Date: 10/23/2011
Subject: FlygenKite news

For the moment R&D for FlygenKite versus micro-energy is ended. The video http://www.youtube.com/watch?v=EEMTmMGtWyI  shows the lighting version.This video is of low quality but shows the advantage (high power) and disadvantage (cyclic irregularity of power) of crosswind kite motion.Small series marketing is now technically possible.

Now R&D is for macro-energy with a reel-out/in scheme according to a better (factor 3 or 4) maximization of space.

PierreB

http://flygenkite.com  

 

Group: AirborneWindEnergy Message: 4539 From: roderickjosephread Date: 10/23/2011
Subject: Re: Visionary AWE Artwork
Brilliant, 

Clicking through gets you to the portfolio of entries to the land art generator initiative

The images are like good looking versions of the picture I posted on here today.
They make me look positively sensible.


Group: AirborneWindEnergy Message: 4540 From: Doug Date: 10/24/2011
Subject: What is a Laddermill?
Hey last I knew, the geniuses at U. Delfts had spent a few million to get to the point I was at after reading a few pamphlets on wind energy and doing my first AWE sketch at age 19 in 1977:
http://www.speakerfactory.net/kitewindmill1sm.jpg
http://www.speakerfactory.net/kitewindmillwritingsmall.jpg
http://www.speakerfactory.net/recordofinvention60PCT.jpg

They were calling it "Laddermill" for its obvious resemblance to a loop of rope ladder - multiple "rungs" reaching up into the sky.
I thought Laddermill was a good name. I thought coming up with that name was a great contribution to AWE, by U. Delfts.

Now I see the same group with videos on youtube:
"Laddermill Explained"
http://www.youtube.com/watch?v=0o3ueyJd9Ug&feature=grec_index
It looks like what the Italians are doing, reeling kites in and out.
So now, I'm confused:
What is meant by the term "Laddermill"?
I thought it referred to an
"Auto-Oriented Wind Harnessing Bouyant Aerial Tramway" as delineated in my original disclosure, seen on my website.

Note: I was still finishing the original drawings when the truth dawned on me from the government pamphlets on wind energy that were gelling in my head, and I realized that blades crossing the wind in circles was a better way to go, leading to the simpler Superturbine(R), which boasted working surfaces not hampered by travel "with" the wind (causes reduced relative windspeed), no "downhill" cycle (half the machine USING energy), and no loop to cause uphill/downhill collisions or entanglement... also higher efficiency for each blade, less material, better potential blade longevity, if hard blades were used.

My pamphlet-reading told me at age 19 that the original "aerial tramway" was similar to placing losing land-based designs, powered by mostly drag, into the sky, and I had to get with the program and incorporate what had been learned in 3000 years of wind energy, rather than starting from scratch and having to make all the previous mistakes again myself.

SO anyway I am just wondering, what is a "Laddermill" today? What do we call the old aerial tramway idea now? Did U. Delfts ever actually BUILD a laddermill of the original definition? (sorry I forgot)

:)
Doug Selsam
P.S. See the reason I got "aerial tramway" notarized was I knew in 1977 that some bigtime university or industry authority would be touting renderings of it by, oh I don't know, say the year 2010, and I wanted to make sure I had it documented that I was there as an uneducated kid in the 1970's. Why? Well I saw we had already lost the ability to get to the moon, and recognized that with our intellectual abilities in decline, sillier and sillier ideas would be considered "breakthroughs", as our average level of ignorance increased.

I recommend the movie "Idiocracy", produced just a few years back - already looking prescient...
Group: AirborneWindEnergy Message: 4541 From: dave santos Date: 10/24/2011
Subject: Taleb- We are "sitting on a barrel of dynamite".
During my three-month Grand Tour of EU AWE circles, a few books were "hot", passing from hand-to-hand. One was Talab's Black Swan , a brilliant debunking of of quantitative prediction in economics by a former hedge fund analyst. "Black Swan" events are major disruptions of the status quo unpredictable by normal low-dimensional analysis of risk-managers, and such events greatly drive history. Major downward corrections in markets unpredicted by models are comparable in scope to all the predictable linear growth. Its much like predicting earthquakes, but Black Swans are not just bad, they can be wonderful.
 
The weak but wise way to predict and plan for a Black Swan is to know they exist and be ready to act when they do. Taleb calls this "crossing the street with your eyes open". Those who do not expect Black Swans are "picking up pennies before a steamroller".
 
Taleb's favorite phrase for an imminent Black Swan is "sitting on dynamite". This, in my view, is what we AWE developers are doing, we hardly imagine the scale of the potential revolution we are gathering. We cannot predict when, or even if, our barrel of dynamite will blow sky-high*, but we should be ready if it does, having endured the wait. We must try every synergistic combination of technical ideas and major applications to set off the dynamite. The AWE Black Swan, if it happens, will take unexpected forms from stochastic conditions.
 
 
*The new oil boom could bridge the gap to the Fusion Age, with AWE as just a fringy player, or maybe AWE will transform our world, we just can't know.
Group: AirborneWindEnergy Message: 4542 From: dave santos Date: 10/24/2011
Subject: Re: What is a Laddermill?
Doug,
 
Many TUDelft folks are "geniuses", just as you insist. The original LadderMill concept has evolved into new types by many lessons and insights since the 90's, but the LadderMill name lives on for continuity of project name.
 
Its well understood that kiteplanes do not have to somehow pass through terminal stations in a loop, but can "pump" and also sweep crosswind. The emerging ideas have been dubbed "dancing" or "balanced" opposed kites (to reduce line drag) and the new overall forward-looking concept is called a "Spider", due to its general appearance. I call it the SpiderMill, and have been sharing the art of the close analog in classic kiting (Eddy Trains of Fighter Kites, the world record of which i assisted).
 
Those teams that test everything possible, test reel systems, but its a baseline or bridge technology to robust short-stroke pumping mechanisms. Tapping the reel is just a convenient tool, since one must have the line winched and stored anyway. Line wear is a killer issue for constant reeling.
 
The LadderMill concept is not dead yet. KiteLab Ilwaco's kite-industry pro, Ron Welty, proposes a soft-kite version of a simple open mesh belt with one-way air-pockets, call it theWelty LadderMill, which we will build and test as time and resources allow (along with dozens of other pending experiments).
 
daveS

 
Group: AirborneWindEnergy Message: 4543 From: Uwe Fechner Date: 10/24/2011
Subject: Re: What is a Laddermill?
Hello,

as far as I know, the term "Laddermill" is used by our group currently mainly as a "brand name".

Currently we focus on the development of  a kite-power system based on a single kite that is working well,
meaning fully automaticly, reliable and with a good efficiency.

When this is working, we want to look at multi kite systems (like dancing kites or even the originally
laddermill) again.

Uwe Fechner
PhD researcher at ASSET, TU Delft



Am 24.10.2011 16:59, schrieb Doug:
Group: AirborneWindEnergy Message: 4544 From: dave santos Date: 10/24/2011
Subject: Introducing the Soft LadderKite
Attachments :
    The attached sketch is not of a LadderMill, but an optimized soft version of a Jacob's Ladder kite. Its intended to maximally tap the wind lift within a given altitude from a single anchor. The kite is an integrated stack of single-skin "minimal-surface geometry" wings after the manner of Barrish or Culp. A smaller pilot-lifter to initiate controlled launch is seen at the "head". To kill the kite the two side lines would be eased, with the center "brake" line keep tight, allowing it to come down easily under the pilot-lifter.
     
    This sort of monster kite might make a great architectural habitat, lift megaloads, host AWECS, etc.
     
    coolIP
     
     
      @@attachment@@
    Group: AirborneWindEnergy Message: 4545 From: Doug Date: 10/24/2011
    Subject: Permanent Magnet Alternator Lathe Demo: RPM vs Open Voltage (video)
    SuperAlternator(TM) Open-Voltage Lathe-Test Demo
    262 Volts at 325 RPM,
    518 Volts at 650 RPM
    734 Volts at 910 RPM
    http://www.youtube.com/watch?v=g1yc40ky6zU
    Group: AirborneWindEnergy Message: 4547 From: Joe Faust Date: 10/25/2011
    Subject: Re: Introducing the Soft LadderKite

    And introducing the free-moving anchor version of Ladder Kite: 

    Ladder Paraglider, a gliding kite system featuring various laddered wings (sub-wing count: 2 or more up to thousands of rungs; each ladder rung may be sized for purposes; rung wings may be soft, medium soft, hard, or even LTA.  Open garden for explorers ...

    The gliding kite with Ladder Kite  has its anchor moving (a bit more than a moving hand or running-skipping-jumping human mooring) freely by the tug of gravity; the tug tenses the kite line set as the Ladder Kite does its wonderful thing via L/D aeromechanics. Build in whatever passive or active controls one wishes. Add RATs to the Ladder Paraglider, if you wish. Have underwater analogue with the paravane Ladder Paraglider.  Operate these at any scale manned or unmanned on earth or in planetary atmospheres or fluidspheres. Consider a version that sails with the plasmas of the universe.

    Group: AirborneWindEnergy Message: 4548 From: Bob Stuart Date: 10/25/2011
    Subject: Re: tubercles
    These could be of interest to anyone here, but if they are getting as much power at 10 MPH as a conventional blade at 17, they are deliberately running the conventional blade past stall, which is a sales set-up.  These bumps may be adopted in situations of unavoidably irregular flow near the ground, but I don't expect them to become popular.

    Bob Stuart

    On 25-Oct-11, at 8:25 AM, energybooth wrote: