Messages in AirborneWindEnergy group.                          AWES 21499 to 21548 Page 323 of 440.
Group: AirborneWindEnergy Message: 21499 From: joe_f_90032 Date: 12/13/2016
Subject: kite-borne energy systems

Group: AirborneWindEnergy Message: 21500 From: dave santos Date: 12/13/2016
Subject: Re: Sheathed torque cables. Flexible shafts with casing

Group: AirborneWindEnergy Message: 21501 From: dave santos Date: 12/13/2016
Subject: Re: Sharp VAWT Kite with Belt Loop; Sharp VAWT Kite Launch Tower

Group: AirborneWindEnergy Message: 21502 From: joe_f_90032 Date: 12/13/2016
Subject: Universal joint

Group: AirborneWindEnergy Message: 21503 From: joe_f_90032 Date: 12/13/2016
Subject: Ro-Kite

Group: AirborneWindEnergy Message: 21504 From: joe_f_90032 Date: 12/14/2016
Subject: Really heavy kite system

Group: AirborneWindEnergy Message: 21505 From: joe_f_90032 Date: 12/14/2016
Subject: Kiteboarding Incidents

Group: AirborneWindEnergy Message: 21506 From: dave santos Date: 12/14/2016
Subject: Re: How to tie a line easily to any kite - with a pigtail

Group: AirborneWindEnergy Message: 21507 From: dave santos Date: 12/14/2016
Subject: Re: Universal joint

Group: AirborneWindEnergy Message: 21508 From: dave santos Date: 12/14/2016
Subject: Re: Ro-Kite

Group: AirborneWindEnergy Message: 21509 From: Pierre BENHAIEM Date: 12/14/2016
Subject: Re: Universal joint

Group: AirborneWindEnergy Message: 21510 From: joe_f_90032 Date: 12/14/2016
Subject: HAWT Kite Upwind with Belt Loop

Group: AirborneWindEnergy Message: 21511 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system

Group: AirborneWindEnergy Message: 21512 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system

Group: AirborneWindEnergy Message: 21513 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Shell Oil, Eon, and Shlumberger team up to invest more in KPS

Group: AirborneWindEnergy Message: 21514 From: dave santos Date: 12/15/2016
Subject: Re: Shell Oil, Eon, and Shlumberger team up to invest more in KPS

Group: AirborneWindEnergy Message: 21515 From: dave santos Date: 12/15/2016
Subject: Martin Bondestam in last DF Discourse

Group: AirborneWindEnergy Message: 21516 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system

Group: AirborneWindEnergy Message: 21517 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system

Group: AirborneWindEnergy Message: 21518 From: Gabor Dobos Date: 12/16/2016
Subject: Cryogenic storage offers hope for renewable energy - Shared from BBC

Group: AirborneWindEnergy Message: 21519 From: dave santos Date: 12/16/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system

Group: AirborneWindEnergy Message: 21520 From: joe_f_90032 Date: 12/16/2016
Subject: Sharp VAWT Kite with Belt Loop Simplified

Group: AirborneWindEnergy Message: 21521 From: joe_f_90032 Date: 12/16/2016
Subject: LTW paravane

Group: AirborneWindEnergy Message: 21522 From: joe_f_90032 Date: 12/17/2016
Subject: Re: Google-Makani News

Group: AirborneWindEnergy Message: 21523 From: dave santos Date: 12/17/2016
Subject: Global Cooling by means of "Kite-Mountain" Cloud-control?

Group: AirborneWindEnergy Message: 21524 From: dave santos Date: 12/18/2016
Subject: Re: Global Cooling by means of "Kite-Mountain" Cloud-control?

Group: AirborneWindEnergy Message: 21525 From: joe_f_90032 Date: 12/18/2016
Subject: HAWT Kite with Loop Belt Simplified

Group: AirborneWindEnergy Message: 21526 From: dave santos Date: 12/19/2016
Subject: Re: HAWT Kite with Loop Belt Simplified

Group: AirborneWindEnergy Message: 21527 From: dave santos Date: 12/19/2016
Subject: Why does it take so long for new energy tech to scale up?

Group: AirborneWindEnergy Message: 21528 From: dave santos Date: 12/19/2016
Subject: Biomimetic and Aeronautical Kite-Arch Similarity Cases (wing-in-surf

Group: AirborneWindEnergy Message: 21529 From: joe_f_90032 Date: 12/19/2016
Subject: Re: Biomimetic and Aeronautical Kite-Arch Similarity Cases (wing-in-

Group: AirborneWindEnergy Message: 21530 From: dave santos Date: 12/20/2016
Subject: Scot AWE R&D on the move, strongly parafoil-based

Group: AirborneWindEnergy Message: 21531 From: dave santos Date: 12/21/2016
Subject: Wave-Field Chaos and AWES Reliability

Group: AirborneWindEnergy Message: 21532 From: dave santos Date: 12/21/2016
Subject: AWEC2017 (standing planning concerns)

Group: AirborneWindEnergy Message: 21533 From: joe_f_90032 Date: 12/21/2016
Subject: Bicycle Wheel HAWT Kite with Loop Belt

Group: AirborneWindEnergy Message: 21534 From: dave santos Date: 12/21/2016
Subject: AWESCO Summer-School (University of Limerick, 2016)

Group: AirborneWindEnergy Message: 21535 From: dave santos Date: 12/22/2016
Subject: e-Kite at TEDx Amsterdam

Group: AirborneWindEnergy Message: 21536 From: edoishi Date: 12/22/2016
Subject: TwingTecc's new video

Group: AirborneWindEnergy Message: 21537 From: dave santos Date: 12/22/2016
Subject: Re: TwingTecc's new video

Group: AirborneWindEnergy Message: 21538 From: dave santos Date: 12/22/2016
Subject: AWES Theory-of-Operation as a Phonon Hall-Effect (PHE)

Group: AirborneWindEnergy Message: 21539 From: dave santos Date: 12/22/2016
Subject: Re: AWES Theory-of-Operation as a Phonon Hall-Effect (PHE)

Group: AirborneWindEnergy Message: 21540 From: Roderick Read Date: 12/22/2016
Subject: You've received a message on Indiegogo

Group: AirborneWindEnergy Message: 21541 From: dave santos Date: 12/23/2016
Subject: AWE Mini-Symposum at TUDelft (dec 14)

Group: AirborneWindEnergy Message: 21542 From: dave santos Date: 12/23/2016
Subject: Large Flocks of Small IFOs

Group: AirborneWindEnergy Message: 21543 From: dave santos Date: 12/23/2016
Subject: Large Vintage Gliders as Tethered (aerotow) Wing Scaling Cases

Group: AirborneWindEnergy Message: 21544 From: joe_f_90032 Date: 12/23/2016
Subject: Young Suk Woo and Chang Deuk Woo

Group: AirborneWindEnergy Message: 21545 From: benhaiemp Date: 12/24/2016
Subject: Re: IFO-ENERGY-UNLIMITED Re: Just add a RAT

Group: AirborneWindEnergy Message: 21546 From: joe_f_90032 Date: 12/24/2016
Subject: High-Altitude-Airborne-Tethered Anchors

Group: AirborneWindEnergy Message: 21547 From: joe_f_90032 Date: 12/24/2016
Subject: Re: High-Altitude-Airborne-Tethered Anchors

Group: AirborneWindEnergy Message: 21548 From: dave santos Date: 12/24/2016
Subject: 2nd Springer AWE book news



Group: AirborneWindEnergy Message: 21499 From: joe_f_90032 Date: 12/13/2016
Subject: kite-borne energy systems

kite-borne energy systems


Phrase focus here. Drachen Foundation's final issue of Discourse   posted the above phrase. 

"kite" itself is already an energy system.  Have an energy system carry another energy system. 


...................... for the record. 
Group: AirborneWindEnergy Message: 21500 From: dave santos Date: 12/13/2016
Subject: Re: Sheathed torque cables. Flexible shafts with casing
Sheathed rotary cables were used for helicoptor toys, as a flight-case. Scaling limit is low by the high casing-mass requirement. Graphene availability is the hope for the many AWES ideas that currently struggle with excess-mass limitations. Reminding Pocock's similarity-case of sheathed control-line-in-main-line, as a non-rotary sheathed-cable case.

Here's some Open-AWE_IP-Cloud thinking- A streamlined tether-bundle of tiny sheathed rotary-shafts, like wood-grain, of a rotating graphene nanotube inside another, as a tiny sheathed drive-shaft. The nonrotating version could create large numbers of Pocock actuation channels. Such a tethers might someday be pulled in one continuous nano-structuring process, and self-heal small defects, like natural crystals do. Maybe this topic is really about sheathed-cable nano-kites on molecular-motor principles.


On Tuesday, December 13, 2016 2:24 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
One related glossary:
Terms & Definition
 
Group: AirborneWindEnergy Message: 21501 From: dave santos Date: 12/13/2016
Subject: Re: Sharp VAWT Kite with Belt Loop; Sharp VAWT Kite Launch Tower
Three comments about the stacked VAWT-

Bullwheel (bikewheel) can be aligned with the VAWT axis by using corner-blocks on the loop-line. This seems simpler and more-COTS than a light "X-Joint".

VAWT axis can be a tensioned line from a surface anchor, to remove dependence on the vertical rigid shaft (torque would pass along on the outside of the "ladder")

Support arms can be faired and and add vertical rotor lift, if needed.


On Tuesday, December 13, 2016 12:27 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  


Group: AirborneWindEnergy Message: 21502 From: joe_f_90032 Date: 12/13/2016
Subject: Universal joint

Understanding Universal Joint


And


Universal joint - Wikipedia


Distinguish CV joint

Constant-velocity joint - Wikipedia


and

U-Joints versus Constant Velocity Joints
Group: AirborneWindEnergy Message: 21503 From: joe_f_90032 Date: 12/13/2016
Subject: Ro-Kite

Ro-Kite | DESMI - Proven technology

and

DESMI RO-KITE Single Vessel SPEED-SWEEP System


Comment: 

The towing vessel might be replaced by an aerial kite system. 
Group: AirborneWindEnergy Message: 21504 From: joe_f_90032 Date: 12/14/2016
Subject: Really heavy kite system

Text here follows the J-Model for Kite terms: 


The largest wing of the kite system plays at once in two media: air and water; the video shows the system with two tugs in opposition to the huge massive other wing of the system.  The two tugs are powered.  The total kite system moves relative to a fixed point in terra firma. 

MSC Savona 14000 TEU entering the biggest lock of the world in Antwerp

===========================

All such teases the realm of large wings set in water-air flows for generating electricity from kite systems. 
Group: AirborneWindEnergy Message: 21505 From: joe_f_90032 Date: 12/14/2016
Subject: Kiteboarding Incidents

AWE takeaways from kiteboarding incidents?

==================================

Post and discuss interesting incidents from the kiteboarding world.  Discuss with an eye to AWE RAD. 

Power. Planning. Control. Prevention of injury. Opportunity. Inspiration. Generation opportunities. Cooperation. Hybrids.     ???

==================================


Start: 

The death rolling kite. Kitesurfing Launch and looping kite out of control. Kite Crash
Group: AirborneWindEnergy Message: 21506 From: dave santos Date: 12/14/2016
Subject: Re: How to tie a line easily to any kite - with a pigtail
In past years it was sometimes proposed that kites were not the essential basis of AWE, as if there was some other suitable technology. LTA and E-VTOL were common alternatives, but themselves turned out to be dominated by kite-forces in higher wind. The "K-word", "kite", went in and out of fashion in venture marketing, while the kite experts remained consistently pro-"kite". After all, Loyd's classic paper was about "Kite Power". In recent years the K-word has once again been embraced by almost everyone.

A gap remains between the longtime kite-experts and talented new participants in AWE R&D. This is the reason for JoeF's generous linking to kite culture sources. Elementary lessons of kite methods are for the novices, to help catch them up to the experts. This is a typical novice topic; the use of the larkshead knot with DIY pig-tails. I recall my own astonishment when Dave Culp of KiteShip taught me this same method. I asked; "Do power-kite flyers really trust their lives to this sort of "slip-knot"?". Yes they do, and now so do I.

Make no mistake, basic kite knowledge is the essential foundation of a successful AWES developer. Theoretic knowledge is almost worthless if the developer lacks the kite basics. If you lack kite expertise, but intend to help AWE mature in the field, you must do the homework.






On Tuesday, December 13, 2016 12:25 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  



Group: AirborneWindEnergy Message: 21507 From: dave santos Date: 12/14/2016
Subject: Re: Universal joint
Great overview links, with key design factors we might otherwise miss.

Note that floor-cleaning tool handles like the "Swifter" have good U-joint mechanisms for an AWES experimenter to salvage.


On Tuesday, December 13, 2016 4:12 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  

And


Distinguish CV joint

and
Group: AirborneWindEnergy Message: 21508 From: dave santos Date: 12/14/2016
Subject: Re: Ro-Kite
Here is peek at this exciting semi-rigid Ro-Kite "side-planer" paravane-

Image result for ro kite sweep


On Tuesday, December 13, 2016 4:12 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
and

Comment: 
The towing vessel might be replaced by an aerial kite system. 
Group: AirborneWindEnergy Message: 21509 From: Pierre BENHAIEM Date: 12/14/2016
Subject: Re: Universal joint

A similarity-case with rotating reel http://www.awec2015.com/images/posters/AWEC25_Benhaiem-poster.pdf. A detailed version will be available in the second AWE book. 

 

PierreB

 

 
Group: AirborneWindEnergy Message: 21510 From: joe_f_90032 Date: 12/14/2016
Subject: HAWT Kite Upwind with Belt Loop

HAWT Kite Upwind with Belt Loop


Hi JoeF,

Please post this improved version of a HAWT Kite with a belt loop, this time with the rotor upwind. Much Thanks.

PeterS


http://www.energykitesystems.net/SharpKites/HAWTKiteUpwindWithBeltLoop.jpg
Group: AirborneWindEnergy Message: 21511 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system
Seeing Fry and Hise in a Selsam experiment with pilot-wing holding multiple rotors spinning lower tether to drive groundgen.  Upper swivel prevents twisting of upper tether.  Impeller count: 18 they say.   We have mentioned this experiment earlier in our forum. 
Airborne Wind Energy: Selsam Flying Superturbine Wind Turbine Driveshaft Tethers a Kite. Demo.

 
Group: AirborneWindEnergy Message: 21512 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system
A balloon lifted version with rigid driveshaft was explored by Selsam. The balloon set could be replaced by lifting soft or rigid kited wings or kited train of wings. 

Doug Selsam Inventor of Superturbine(R)

  In the video, Selsam describes the Sky Serpent as a particular version of SuperTurbine (R). 
Group: AirborneWindEnergy Message: 21513 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Shell Oil, Eon, and Shlumberger team up to invest more in KPS
The topic news get tailing attention: 

Energy giants commit to kite-driven wind power

14th Dec 2016 11:50 AM

Energy giants commit to kite-driven wind power

  ==================================
Group: AirborneWindEnergy Message: 21514 From: dave santos Date: 12/15/2016
Subject: Re: Shell Oil, Eon, and Shlumberger team up to invest more in KPS
Yes, there is a viral surge to this KPS news, with too many echoes to list here. This is not all robo-news, like some AWE stories, but many actual writers and editors with large elite engineering and financial audiences responding with added analysis. Once again an AWES developer, this time KPS, by buzz and capitalization, has an opportunity to lead the entire AWE field to its major growth phase, but only if it can form a broader R&D program to go beyond its current two-kite architecture, which has the unique defect of the kites being prone to cross-interference. 

The default reliable spacing in AWE has been a full tether-length between single-kite anchors, but KPS puts two kites on one anchor. The problem should show up in the reliability staistics within days, with a single unit. An open-AWE IP-cloud approach is to see the kitefarm as a belay-programmable anchor field. This low--complexity paradigm* allows the KPS architecture to be corrected by pulley line PTOs to the center groundgen  from each kite, anchored well-clear. This preserves KPS's claimed reeling advantage of full-phased double pumping. Programmable anchor fields then lead to fully-crosswind high-speed load motion that reeling by itself cannot. KPS is challenged to lead to whatever concept stream may prove more effective, a challenge that several prominent early AWE players badly failed at.

---------------
* to offset a requirement for complex control by skilled rigging.




On Thursday, December 15, 2016 10:57 AM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
The topic news get tailing attention: 

Energy giants commit to kite-driven wind power

14th Dec 2016 11:50 AM
Energy giants commit to kite-driven wind power
  ==================================
Group: AirborneWindEnergy Message: 21515 From: dave santos Date: 12/15/2016
Subject: Martin Bondestam in last DF Discourse
In addition to the Minesto piece by JoeH in the last Drachen Foundation Discourse, the interview with elderly Finnish architect Martin Bondestam is a special jewel. Martin is perhaps the most creative kite mind of modern times. He started decades ago with giant kite feats, but usually works small, with scrap materials, soaring conceptually from aerofineart to aerotecture to aerotheatre, with an almost limitless kite technical-vocabulary. His work is truly interdisciplinary multi-dimensional. How wonderful he is still with us, as-active as-ever, still planning ever-greater kite works, and still teaching us what his magic kites teach him.
Group: AirborneWindEnergy Message: 21516 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system
Group: AirborneWindEnergy Message: 21517 From: joe_f_90032 Date: 12/15/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system
Eckhardt taught multiple rotors in an AWEs.  
Priority date: Jul 22, 1996

Hans-Gunter Eckhardt, Germany

Also, in the literature is a spelling: 

ECKHARDT HANS-GUENTER
Group: AirborneWindEnergy Message: 21518 From: Gabor Dobos Date: 12/16/2016
Subject: Cryogenic storage offers hope for renewable energy - Shared from BBC
Hi Everybody,

Just to keep IFO-topic flying...

http://www.bbc.com/news/science-environment-37902773

Gabor Dobos
Group: AirborneWindEnergy Message: 21519 From: dave santos Date: 12/16/2016
Subject: Re: Exploring AWES using multiple rotors in the kite system
Mummert's scheme has an interesting distribution of kytoon lifting-units along the VAWT-train. The popular idea most AWES designers stick to is a large single lifting-unit, but this is not necessarily best in all cases, as has been discussed. Kite lift along the line is often favored, and kite trains hold the altitude records over all other tethered systems.

In Mummert's case, the kytoon choice is problematic. Each unit would require separate helium servicing and LTA lift-volume low-drag and gas-retention performance favors a larger balloon over many smaller ones. Kite-lift generally works the other way, with many smaller kites historically out-lifting any comparable-area large kite which was too ungainly to even attempt.

We are also seeing how an inherently diagonal tether angle attracts designers to favor either VAWT or HAWT ideas, without any formal determination of which option is better, or if both are bad compared to other methods. 


On Thursday, December 15, 2016 5:27 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Eckhardt taught multiple rotors in an AWEs.  
Priority date: Jul 22, 1996

Hans-Gunter Eckhardt, Germany

Also, in the literature is a spelling: 

ECKHARDT HANS-GUENTER
Group: AirborneWindEnergy Message: 21520 From: joe_f_90032 Date: 12/16/2016
Subject: Sharp VAWT Kite with Belt Loop Simplified

Sharp VAWT Kite with Belt Loop Simplified

Hi JoeF,

Please post the attached drawing for me. Much Thanks.

PeterS

http://www.energykitesystems.net/SharpKites/SharpVAWTKitewithBeltLoopSimplified.jpg
Group: AirborneWindEnergy Message: 21521 From: joe_f_90032 Date: 12/16/2016
Subject: LTW paravane

Lighter-than-water (LTW) paravane flygen


Title: 

Deployable submarine-hydroelectric generator for sea currents energy harvesting

Patent US20090140524 - Deployable submarine-hydroelectric generator for sea currents energy harvesting

Publication numberUS20090140524 A1
Publication typeApplication
Application numberUS 11/998,593
Publication dateJun 4, 2009
Filing dateNov 30, 2007
Priority dateNov 30, 2007
InventorsJoseph B. Kejha
Original AssigneeKejha Joseph B
Export CitationBiBTeX, EndNote, RefMan
Patent Citations (12), Referenced by (31), Classifications (10)

External Links: USPTO, USPTO Assignment, Espacenet
Group: AirborneWindEnergy Message: 21522 From: joe_f_90032 Date: 12/17/2016
Subject: Re: Google-Makani News
Speculation spots continue:
Here is one with a pleasant artsy video: 
Google develops floating data centers propelled by windmill-like kites (VIDEO) - See more at: Google develops floating data centers propelled by windmill-like kites (VIDEO)

 
Group: AirborneWindEnergy Message: 21523 From: dave santos Date: 12/17/2016
Subject: Global Cooling by means of "Kite-Mountain" Cloud-control?
We have considered mountain-like kite structures capable of controlling weather far downwind. Causing or preventing rain has been the main idea, with powerful effects seemingly quite feasible. Kites can harvest cloud-water and make shade as well. We have not yet closely considered the effectiveness of manipulating simple cloud cover; of commanding whether clear conditions or rainless-overcast prevails.

The novel idea here is that "kite-mountains" be deployed in a day-night cycle to specifically cool a regional or planetary climate. By day, cloud-cover acts as a brilliant solar reflector, but by night, cloud-cover acts as a warm blanket. The idea is that a kite-mountain can deploy and undeploy with the day-night rhythm to maximize cooling around the clock. The effects would spread downwind far wider than the scale of a ridge-like kite-mountain itself.

This seems to be a more practical and economic cooling scheme than space-mirrors, and more environmentally sound than seeding chemicals in the sky that persist counter-productively across the day-night cloud-effect reversal. It could also protect specific regions of biodiversity and agriculture from the worst warming effects. Rain-control would remain a key capability of such a kite-mountain. Ruinous flood rains might be diverted to relieve droughts, replenish aquifers, and so on.
Group: AirborneWindEnergy Message: 21524 From: dave santos Date: 12/18/2016
Subject: Re: Global Cooling by means of "Kite-Mountain" Cloud-control?
Attachments :
    A key to this Global Cooling concept is operating the kites flexibly at optimal altitudes where temperature and dew-point are close enough so that the turbulent wakes naturally create condensation trails. These altitudes tend to vary greatly, so kite formations must track them closely.

    To vividly illustrate the kite-based cloud-making principle, the attached concept image began with a well known photo of an offshore kitefarm creating condensation trails, that was flipped upside-down and pilot-lifter kites added. The resulting image also suggests AWE generation capability overlapping with cloud-making. 

    A concern is that  major AWE kite formations should not operate at night in cloud-making mode, by avoiding con-trail altitudes.
    Show original message




    Group: AirborneWindEnergy Message: 21525 From: joe_f_90032 Date: 12/18/2016
    Subject: HAWT Kite with Loop Belt Simplified

    HAWT Kite with Loop Belt Simplified


    Hi JoeF,

    Please post the attached drawing for a simplified version of a HAWT Kite. Much thanks.

    PeterS

    http://www.energykitesystems.net/SharpKites/HAWTKitewithLoopBeltSimplified.jpg
    Group: AirborneWindEnergy Message: 21526 From: dave santos Date: 12/19/2016
    Subject: Re: HAWT Kite with Loop Belt Simplified
    A suggestion, based on many KiteMotor and KiteSat prototypes, is to have the turbine downwind below the kiteline, where there is more space for a larger rotor, with less interference potential. The reason for more space is that the kiteline forms an angle where the WECS mass hangs, so the windward space is more pinched by the angle, while the downwind side is opened up.

    A further advantage to placing the rotor aft is to eliminate the need for an added tail-vane, since the rotor itself becomes the tail-vane.

    It seems strange the run the rope-loop sideways, since the slack side will run lower than the tense side. Classic rope driving places the slack side down, with a vertical drive-wheel, but rope conveyors like ski-lifts do run the loop sideways.


    On Sunday, December 18, 2016 8:10 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
    HAWT Kite with Loop Belt Simplified

    Hi JoeF,
    Please post the attached drawing for a simplified version of a HAWT Kite. Much thanks.
    PeterS
    http://www.energykitesystems.net/SharpKites/HAWTKitewithLoopBeltSimplified.jpg
    Group: AirborneWindEnergy Message: 21527 From: dave santos Date: 12/19/2016
    Subject: Why does it take so long for new energy tech to scale up?
    Bill Gates often comments that it takes about fifty years for a major change in the world's energy supply, but we have move faster than that with new renewable "energy miracles" like AWE, given the potential urgency of climate-change reality. The current state of AWE is clearly that of a technology proven to work in small scale prototypes, but without societal urgency would take decades to perfect. 

    The basic reasons for such slowness is obvious: A few pioneering developers working at small scale are generally unable to make the transition to full industrial scale, which can require many thousands of industrial engineers. There is also a financing cost to the scaling process, where haste adds cost. Nevertheless, sometimes haste is seen essential, like the current quest to develop new energy ahead of worst-case climate-change effects.

    In the past there are cases where major technology leaped forward under wartime dynamics in just a few years. We do not count on war to speed AWE R&D, but hope to accomplish the same sort of rapid technological leap. There are several helpful factors we can count on. There is an educated world consensus to move forward quickly, and sufficient capital to get started on a fast-track, as Gates himself represents. We have the Net to speed collaborative communication among a vast population of talented engineers.

    There are naive critics with roundly-discredited positions ranging from pollyannism to fatalism; that there is no global climate-change crisis to worry about, or if there is, that AWE is too hard to hope to perfect in time before irreversible global collapse. These lonely voices have little impact on AWE R&D already proceeding robustly. The biggest impact will come from those engineers who push the leading edge of scaling up from toy AWES to world-changing AWES. Be ready to catch this looming wave by planning and training for it. There will be news soon about specific developments to join in.
    Group: AirborneWindEnergy Message: 21528 From: dave santos Date: 12/19/2016
    Subject: Biomimetic and Aeronautical Kite-Arch Similarity Cases (wing-in-surf
    Attachments :
      Loons are heavy aquatic diving birds whose evolution represents a trade-off between swimming, walking, and flying capabilities. They can hardly even walk and only come ashore to nest. To assist flying they exploit wing-in-surface-effect (WISE, aka "ground effect"), like this loon photo of a "typical flight profile", as Wikipedia puts it. They can flap hard to build up momentum and play gusts for short gliding phases over flat inland waters, adopting a ram-air wing-dammed form that maximises L/D flying low over a surface. 

      Similarly, seagoing WISE amphibious aircraft cases, like the "Pelican" aircraft pictured below, apply the same principle. The next image of actual pelicans shows the same general capability in action. Under Galilean Relativity of the observer's frame of motion, all of these cases, aerodynamically, equivalent in action to a kite arch in wind, especially if the arch is mass-loaded toward the center. The final picture of Motha1 shows how we counted on WISE to enable low-wind flight. In all such cases, there is a strong wing-in-surface-effect flight advantage.




      Image result for wing in surface effect

      Image result for flying pelicans over surface

      Inline image

      		   @@attachment@@
      Group: AirborneWindEnergy Message: 21529 From: joe_f_90032 Date: 12/19/2016
      Subject: Re: Biomimetic and Aeronautical Kite-Arch Similarity Cases (wing-in-
      WISE Mothra I
      =======================================
      Group: AirborneWindEnergy Message: 21530 From: dave santos Date: 12/20/2016
      Subject: Scot AWE R&D on the move, strongly parafoil-based
      More Scottish media enthusiasm of KPS AWE.This is an intensification of a global trend in recent years in favor of parafoil AWE, as opposed to so many odd one-of-a-kind AWES concepts. Counting Rod Read and Ozone Kites, Scotland, population only 5.3 million, is one of the most intensive AWE R&D players, thanks to high engineering capability AND strong winds. All three Scot players use parafoils. Right across the North Sea is SkySails, ship kites that are also parafoil-based. The parafoil is arguably the first TRL9 COTS AWES solution, never mind the variety of ways it can be tapped.
      Group: AirborneWindEnergy Message: 21531 From: dave santos Date: 12/21/2016
      Subject: Wave-Field Chaos and AWES Reliability
      The best possible analytic AWE depends on cutting edge multidisciplinary science. Wave dynamics is particularly critical physics that applies to the superposition of the kite's inherent dancing motions in six dimensions, the tether's string harmonics, and wave fields in natural winds. Its still very early in formally defining and solving these AWES's equations-of-motion. We are still in an early phase of system identification, identifying critical factors as pioneers.

      An ongoing modern revolution in hyrdodynamics usefully explains many wave phenomena that were once only anecdotal rumor. Rogue Waves surviving sailors long reported are now well-documented and better understood. A particular dynamic is that a wave or trough can suddenly appear "out of nowhere" when two wave trains interfere. This is Clapotis, that in an ideal form creates a persistent Standing Wave field, but the wild sea is usually far to noisy to sustain fixed clapotis, and instead shows "rogue" statistics. Imagine the unlucky boat that is thrown in the air by the sort of monster clapotis wave below. Its quite common such boats are never seen again, with no confirmation of what sank them.

      The sky commonly stratifies in horizontal shear layers, and the boundaries between layers support the creation of powerful surface waves. Usually invisible, surface waves in the wind field are just as dynamical (chaotic) as dramatically visible sea waves. Kites are subject to the same sort of risk of upset as boats. Clapotic interference effects abound at all scales in the atmosphere and account for much of the local unpredictability of weather. To hope to succeed, AWES engineers must diligently address dramatic natural-wind-field chaos that modern science is predicting and revealing, chaos that sailors and pilots have always known about, but no one has yet fully understood.



      Related image
      Group: AirborneWindEnergy Message: 21532 From: dave santos Date: 12/21/2016
      Subject: AWEC2017 (standing planning concerns)
      It was imagined that AWESCO was abandoning the AWEC conference brand, given years of complaints over the notorious consortium's secretive pay-to-play governance. Think again, we are looking at AWEC2017.

      The mystery continues over how AWEC conferences are decided, or if the once-prominent consortium even still exists. The last that was known was that AWESCO insider RichardR became director of AWEC, then GuidoL, but after that, for the last few years, nothing has been publicly disclosed about AWEC. Complaints accumulated, but remain unanswered, like how AWESCO insiders, like Enerkite, got early private invitations to demo at AWEC 2013, while visiting outsider demos were stone-walled up to the last minute, not even able to meet Customs procedures. There is also a standing complaint over how JohnO of AWEIA, representing Open-AWE perspectives, was excluded from conference planning, while venture insiders like Guido were not excluded, but given executive roles.

      What is clear is that the inside AWESCO circle knows what happened to AWEC, has taken charge of the AWECxxxx conference brand, but with no public transparency, enforcing a Northern EU monopoly on AWEC conferences. 

      Meanwhile, the rest of the world is left guessing what has happened to what was once an open AWE conference process. Once again, AWESCO is asked; what has happened to AWEC? Without clear answers to conference governance concerns, AWEC2017 organizers cannot expect much enthusiasm from the wider AWE R&D community. Once again, protests will be lodged and participation will suffer.

      Time will tell if AWESCO's parochial insider-politics ultimately harms its scientific success and even the prospects of the favored ventures, due to cultural inbreeding. For example only one AWEC2017 organizer of 24 is US-based (ChrisV, Altaeros). The US AWE community has been patiently waiting for years to once again host an AWEC conference, with no relief in sight from ongoing opaque Northern EU AWEC monopolization :(
      Group: AirborneWindEnergy Message: 21533 From: joe_f_90032 Date: 12/21/2016
      Subject: Bicycle Wheel HAWT Kite with Loop Belt

      Bicycle Wheel HAWT Kite with Loop Belt


      Hi JoeF,

      Please post the attached drawing. This seems to be the simplest version of a HAWT kite. The speed of the belt loop can be decreased by increasing the solidity ratio of the rotor. The rotor could be as large as desired. If necessary, two more pinch rollers could be added to keep the loop belt on the rim. They would be added near the guide wheels. Or, a thin fender could encircle the rim to prevent the loop belt from slipping off of the rim.

      This basic design could be modified to use a long row of Selsam HAWT rotors, mounted on a shaft, and downwind of the bicycle wheel rotor. By using a tether to the pilot kite, the row would slant upward to expose each of the rotors to clean air. To tail vane would be needed. That arrangement should be much lighter, simpler, and cheaper than using a torque tether to the ground – as is currently proposed for multi-rotors suspended from kites. Overspeed control might be achieved by letting excessive wind force on the multi-rotors force them downwind and to a position where their common shaft was horizontal so that the wind was blocked from reaching the rotors behind the most windward rotor. Or, a wind speed sensor on the ground could activate a brake to stop the belt loop.

      Thanks,

      PeterS

      http://www.energykitesystems.net/SharpKites/BicycleWheelHAWTKitewithLoopBelt.jpg
      Group: AirborneWindEnergy Message: 21534 From: dave santos Date: 12/21/2016
      Subject: AWESCO Summer-School (University of Limerick, 2016)
      The 14 AWESCO PhDs  debuted in public, in Ireland, last June. We can see only program info (links below), so it must be hoped a linked public archive of the presentations will emerge. There is a tension between the AWE stealth-ventures involved and open science (and public funding), so lets hope AWE science wins out in the end.

      This still counts as AWESCO's first significant disclosure, and reveals research directions and priorities fairly well. What is harder to gauge is if these PhD recruits, new to AWE, will really deliver major conceptual advances to the engineering-science, as hoped.
      Group: AirborneWindEnergy Message: 21535 From: dave santos Date: 12/22/2016
      Subject: e-Kite at TEDx Amsterdam
      Group: AirborneWindEnergy Message: 21536 From: edoishi Date: 12/22/2016
      Subject: TwingTecc's new video
      Group: AirborneWindEnergy Message: 21537 From: dave santos Date: 12/22/2016
      Subject: Re: TwingTecc's new video
      Always good to see Corey, who many of us first met at HAWPcon09.  TwingTech is clearly a leader in the crowded race to bring small-scale AWES to market. Along with KiteMill and Makani, this is an E-VTOL dependent architecture with scaling constraints so severe its supposed Makani's grandiose M600 may not be viable, having over-scaled, with scant safety margin. 

      The historic Swiss challenge is to not end up once again "perfecting the wristwatch", while others move on to bigger things. Rolf's innovative tensairity airframe explorations seem to have suspended; the probable reason being the critical requirement to maintain "balloon super-pressure" (a few psi higher than ambient) over long periods. What remains is the successful Morse Sled in classic kiting, with its ram-air tubes and embedded whiskers, so the tensairity concept lives on. 

      Twingtec's kiteplane video reveals a large orbit far from the core kite-window power-zone, owing to a lack of vertical surface forward of the rudder. This missing aero-surface has long been a Twingtec shortcoming, compared to standard kites (ie. a delta's keel). To otherwise tighten its orbit, especially to avoid crashing at the bottom, it cannot roll-and-pitch very readily in its orbit cycle owing to the mass and drag of the wing-tip VTOL units. Shown flying from a hilltop, its getting an extra DS boost from an enhanced wind-gradient. Its also less likely to crash over descending terrain, rather like flying from a tower.

      It cannot be denied that developers like Twingtec are advancing AWE's state-of-the-art by slow patient baby-steps, if not by large leaps. Sooner or later, systems like Twingtec's will be brought to practicality. Academically-based AWE ventures like Twingtec seem more stable than ordinary start-up ventures that must produce economic returns sooner. On the other hand, academia has a hard time completing commercialization. The small-AWES market could even be snatched up by a late-coming venture, since no existing player seems to have blocking IP.
      Group: AirborneWindEnergy Message: 21538 From: dave santos Date: 12/22/2016
      Subject: AWES Theory-of-Operation as a Phonon Hall-Effect (PHE)
      An interesting theoretic perspective emerges from pondering AWE motions as analogs to field-effect-transistor (FET) or hall-effect sensor physics, substituting our phonon basis for the accustomed electron Hall-effect basis. Rather than seeing the AWES principle as a crude analogy, the unit-kite as the "tip-of-the-wind-turbine-blade", a more rigorous idea is to design an AWES at the unit-kitefarm scale, as an energy-processing metamaterial in flowing media.

      Wind is a current flowing in relation to the surface, and AWES are intended to channel this ballistic longitudinal motion perpendicularly (downward crosswind). Metamaterial AWES theory particularly seeks to channel the wind's kinetic energy as an engineered field-effect. "Rag-and string" Kagome Lattices are a leading structural pattern. So it was only natural to search for "phonon hall effect" and find metamaterial science already exploring the concept, complete with the kagome structural assumption. There are misc. secondary differences, like considering AWE in its gravity field, rather than, say, a magnetic field model. A-force-is-a-force after all, with the same classical motions.

      The emerging AWES-as-metamaterial theory-of-operation continues to meet all fundamental criteria of mainstream metamaterial science, down to an uncanny level of detail. There seems to be no theoretic barrier to vast metamaterial kite lattices coherently harvesting and transmitting kinetic wind energy down to groundgen fields, and other direct work apps. Its time to start designing and building proof-of-concept AWES prototypes to clearly embody the metamaterial science revolution. This paper is a good example of third-party conceptual support for the PHE AWES concept-
      Group: AirborneWindEnergy Message: 21539 From: dave santos Date: 12/22/2016
      Subject: Re: AWES Theory-of-Operation as a Phonon Hall-Effect (PHE)
      Extending the PHE AWES interpretation; note that kite lift-force expresses as an anti-gravity force, not just canceling gravity, but creating an engineered "negative gravity" field in the sky to enable transforming and steering the wind energy "phonon current" downward. May this insight help those new to the Hall effect to understand Wikipedia's Hall Effect article, in light of PHE. Then there is a Thermal Hall Effect page linked in Wikipedia, which can taken as a PHE article, since thermal and phonon energy are the same physical thing (PHE duly cited in the thermal hall effect page)-








      On Thursday, December 22, 2016 11:46 AM, "dave santos santos137@yahoo.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
      An interesting theoretic perspective emerges from pondering AWE motions as analogs to field-effect-transistor (FET) or hall-effect sensor physics, substituting our phonon basis for the accustomed electron Hall-effect basis. Rather than seeing the AWES principle as a crude analogy, the unit-kite as the "tip-of-the-wind-turbine-blade", a more rigorous idea is to design an AWES at the unit-kitefarm scale, as an energy-processing metamaterial in flowing media.

      Wind is a current flowing in relation to the surface, and AWES are intended to channel this ballistic longitudinal motion perpendicularly (downward crosswind). Metamaterial AWES theory particularly seeks to channel the wind's kinetic energy as an engineered field-effect. "Rag-and string" Kagome Lattices are a leading structural pattern. So it was only natural to search for "phonon hall effect" and find metamaterial science already exploring the concept, complete with the kagome structural assumption. There are misc. secondary differences, like considering AWE in its gravity field, rather than, say, a magnetic field model. A-force-is-a-force after all, with the same classical motions.

      The emerging AWES-as-metamaterial theory-of-operation continues to meet all fundamental criteria of mainstream metamaterial science, down to an uncanny level of detail. There seems to be no theoretic barrier to vast metamaterial kite lattices coherently harvesting and transmitting kinetic wind energy down to groundgen fields, and other direct work apps. Its time to start designing and building proof-of-concept AWES prototypes to clearly embody the metamaterial science revolution. This paper is a good example of third-party conceptual support for the PHE AWES concept-
      Group: AirborneWindEnergy Message: 21540 From: Roderick Read Date: 12/22/2016
      Subject: You've received a message on Indiegogo
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      Group: AirborneWindEnergy Message: 21541 From: dave santos Date: 12/23/2016
      Subject: AWE Mini-Symposum at TUDelft (dec 14)
      Two interesting TUD presentations by Thomas and Antonello, that show affinities but also delineate differences between academic, venture, and open-AWE R&D cultures. We need more of these informal AWE events at engineering schools everywhere.

      Thomas presents an open-source AWES design, but based on a composite glider and complex flight automation, not on cheap COTS kites that fly themselves. Antonello revisits the well-known altitude constraint due to tether drag, and proposes a "dancing" kite pair, as Payne and others have long considered. 

      There seems to be little awareness in the TUD circle of the cloud of open-AWE solutions to tether-drag and altitude constraints. These solutions include variations of staged-lift, like kitetrains; high-speed cross-wind load-motions (rather than downwind reeling slow load-motion); better tether angles (even upwind-tilted) by pilot-lift, etc). At least Antonello is optimistic that stratospheric harvesting is feasible, but the dancing kite-pair can't do it with today's materials, since the world-record longest kite tethers without train-kites barely reach halfway to the stratosphere, with hardly any net harvestable power. It takes IFOs, trains, or layered-stages of kites to do the job, at least until graphene arrives, and probably thereafter.

      Is there is a public archive of these talks? TUDelft has a long mixed record of hiding and sharing AWE technical knowledge, with a trend over time toward strict confidentiality with venture partners, at the expense of academic transparency. If the world does not get to see these exclusive events, the apparent reason is the risk of a candid public airing of fatal technical vulnerabilities that the ventures and professors prefer to remain in the family.
      Group: AirborneWindEnergy Message: 21542 From: dave santos Date: 12/23/2016
      Subject: Large Flocks of Small IFOs
      Hello to Gabor,

      We continue to ponder the IFO concept in diverse dimensions, including cryogenics and other air-fuels. The general statistics of modern soaring flight show increased endurance as performance improves, so the crossover for IFO performance, with the required energy load-demand, is tantalizingly almost in reach. Day-by-day we are closer, but its "like watching grass grow".

      It may be that the IFO needs to begin small-scale to really go high, the size of an eagle, to avoid excess square-cube mass, and for cost effective early research. When the Graphene Revolution finally takes hold, IFOs might then scale to airliner-size; but maybe optimal scale for an IFO will always be small, with larger flocks matching demand.

      Starting flight research with small units based on cheap COTS hobby gliders, large flocks of IFOs are already feasible. Some drone developers are already flying flocks very impressively. In IFO research, "perfect is the enemy of good", lets forge ahead by the means available. It seems that a 3m WS electric glider might roughly rate around 500W as a WECS, with a wholesale unit-cost around 100USD in volume production. A good ridge-soaring AWES research location with existing kite-plane affinity might be KiteMill's Norwegian airport.

      The IFO concept needs to be on the short list of major AWES architectures for properly funded research. The suggestion is an IFO research flock of a thousand or so smart-gliders at 3m scale. Student teams around the world could design diverse energy and atmosat payloads, and the schools end up with the glider units at the end of flock trials. A high-number IFO flock would produce rich statistical operational data, instead of vague results from isolated prototypes. What a futuristic spectacle a thousand 3m IFOs would make!

      Cheers,

      dave 
      Group: AirborneWindEnergy Message: 21543 From: dave santos Date: 12/23/2016
      Subject: Large Vintage Gliders as Tethered (aerotow) Wing Scaling Cases
      Here are some less known WW2 transport gliders. We study such examples as tethered-wing (aerotowed) scaling cases, having mostly looked at the Gigant (bottom photo). We can imagine pretty good performance by updated kiteplanes like these, but in the strongest winds, not in most-probable-wind at most places.

      These gliders seem to have no current equivalent closer than large cargo parafoils. Modern sport gliders are quite small by comparison, and even so might not be economic in common wind, with fairly high capital cost and long pay-back. Link provides type info.







      Inline image






      		   @@attachment@@
      Group: AirborneWindEnergy Message: 21544 From: joe_f_90032 Date: 12/23/2016
      Subject: Young Suk Woo and Chang Deuk Woo

      Young Suk Woo and Chang Deuk Woo


      Medium/Large Electricity Generator Equipped with Automatically Winding and Un-winding Kite Cable Mechanism for minimum energy loss 
      Group: AirborneWindEnergy Message: 21545 From: benhaiemp Date: 12/24/2016
      Subject: Re: IFO-ENERGY-UNLIMITED Re: Just add a RAT

      "Un-tethered devices in airborne wind energy harvesting" chapter in "Airborne Wind Energy Advances in Technology Development and Research: 2017" book on  http://www.fishpond.com.au/Books/Airborne-Wind-Energy-Roland-Schmehl-Edited-by/9789811019463 .


      PierreB
      Group: AirborneWindEnergy Message: 21546 From: joe_f_90032 Date: 12/24/2016
      Subject: High-Altitude-Airborne-Tethered Anchors

      High-Altitude-Airborne-Tethered Anchors to Non-Ground-Connected Kite Systems

      [related: FFAWE]

      The subject anchors lofted are kited wing sets anchoring opposing wing sets; such anchors allow opposing kited wing sets in the same system to work for various purposes including the generation of power. The realm has not tethers to the ground. Tasks by the wholly airborne kite systems are being explored. PTO means are being explored. Distinguish this topic from the Gabor Dobos IFO; however, noticing cooperation with IFOs would be on topic here. "wing" may be broadly interpreted.   Notice that either set of opposing wing sets in the kite system may be defined as "anchor" to the opposing wing set.  So, this topic is an alternative expression of FFAWE with a focus that lofted "anchors" allow ready entrance to the realm of energy kites that do not tether to the ground, but stay aloft wholly. 
      Group: AirborneWindEnergy Message: 21547 From: joe_f_90032 Date: 12/24/2016
      Subject: Re: High-Altitude-Airborne-Tethered Anchors
      High-Altitude-Airborne-Tethered Anchors to Non-Ground-Connected Kite Systems
      HAATANGCKS    or HAATA for short? 

      HAATA may be set into glide mode with various intents; one intent for the gliding could be for landing to terra firma. or to sea surface. Another gliding intent could be for reaching better soaring scenes. 

      HAATA may place its opposing wing sets in different wind environments in order to perform tasks. E.g., one wing set anchoring the other wing set could be flown to central jet stream while the opposing wing set could be controlled to do its anchoring from a good distance from the central jet stream. 
      Group: AirborneWindEnergy Message: 21548 From: dave santos Date: 12/24/2016
      Subject: 2nd Springer AWE book news
      Finally; a bit of public news about the long-delayed second AWE book, but with many undisclosed details. There is now a stated shipping date of June 8, 2017, which means a lot of the content will be stale, given the year or two of editing delay. Once again, there is no indication of due concern on TUDelft's part for open-access knowledge. The wider AWE world once again faces a restrictive commercial paywall to stale content, while an inside circle has long enjoyed free timely access to such content. 

      The technical paradigms editorially favored are expected to mirror a social divide in AWE, related to TUD's stealth-venture affiliations and AWEC-AWESCO, and AWEIA controversies, rather than a truly inclusive AWE knowledge trove. Expect the final peer-reviewer list to reflect ingrained regional and commercial biases of the TUD circle, rather than the wider global community.* The first Springer AWE book was riddled with careless errata, and so poorly bound kPower's copy quickly fell apart (donated to the Wind Power Museum in Lubbock, Texas).  There will surely be good AWE content that would have been better served by a more open and timely publishing effort. 

      Had Wubbo lived, surely TUD would be more accountable to ongoing public concerns over their AWE publishing standards (and AWEC conference planning). Open peer-review would result in a very different AWE book, less covertly favorable to TUD's direct commercial spin-offs. Lets hope final editorial efforts mitigate the complaints. Time will prove if TUD AWE knowledge-sharing standards were sufficiently high.


      ============

      * Springer publishing peer review abuse is a serious problem, as this Washington Post article reports-