Messages in AirborneWindEnergy group.                          AWES 21651 to 21700 Page 326 of 440.

Group: AirborneWindEnergy Message: 21651 From: Joe Faust Date: 1/10/2017
Subject: Methods for perching

Group: AirborneWindEnergy Message: 21652 From: Joe Faust Date: 1/10/2017
Subject: Improved tether winding

Group: AirborneWindEnergy Message: 21653 From: Joe Faust Date: 1/10/2017
Subject: Systems and Methods for a Winch Drum and Drum Door US 20150183529 A1

Group: AirborneWindEnergy Message: 21654 From: Joe Faust Date: 1/10/2017
Subject: Systems and Apparatus for Cable Management US 20150180186 A

Group: AirborneWindEnergy Message: 21655 From: dave santos Date: 1/10/2017
Subject: Re: Tether Termination Systems and Methods

Group: AirborneWindEnergy Message: 21656 From: Joe Faust Date: 1/10/2017
Subject: Systems and methods for controlling rotation and twist of a tether W

Group: AirborneWindEnergy Message: 21657 From: Joe Faust Date: 1/10/2017
Subject: BIASED COMPOUND RADIAL PLAIN BEARING FOR INCREASED LIFE IN OSCILLATI

Group: AirborneWindEnergy Message: 21658 From: Joe Faust Date: 1/10/2017
Subject: Enhanced accuracy for tracking tethered airborne vehicles

Group: AirborneWindEnergy Message: 21659 From: Joe Faust Date: 1/10/2017
Subject: Pivoting perch for flying wind turbine parking WO 2016148870 A1

Group: AirborneWindEnergy Message: 21660 From: dave santos Date: 1/10/2017
Subject: Re: Systems and Methods for a Winch Drum and Drum Door US 2015018352

Group: AirborneWindEnergy Message: 21661 From: Joe Faust Date: 1/10/2017
Subject: Methods and systems for winding a tether US 9352930 B2

Group: AirborneWindEnergy Message: 21662 From: Joe Faust Date: 1/10/2017
Subject: Tether Fatigue Tester 2013 February circa

Group: AirborneWindEnergy Message: 21663 From: dave santos Date: 1/10/2017
Subject: Re: Systems and Apparatus for Cable Management US 20150180186 A

Group: AirborneWindEnergy Message: 21664 From: dave santos Date: 1/10/2017
Subject: Re: Pivoting perch for flying wind turbine parking WO 2016148870 A1

Group: AirborneWindEnergy Message: 21665 From: dave santos Date: 1/10/2017
Subject: Re: Methods and systems for winding a tether US 9352930 B2

Group: AirborneWindEnergy Message: 21666 From: dave santos Date: 1/10/2017
Subject: Re: BIASED COMPOUND RADIAL PLAIN BEARING FOR INCREASED LIFE IN OSCIL

Group: AirborneWindEnergy Message: 21667 From: dave santos Date: 1/10/2017
Subject: Re: Tether Fatigue Tester 2013 February circa

Group: AirborneWindEnergy Message: 21668 From: Joe Faust Date: 1/10/2017
Subject: Ground Station with Shuttled Drum for Tethered Aerial Vehicles

Group: AirborneWindEnergy Message: 21669 From: joe_f_90032 Date: 1/10/2017
Subject: What is missing here?

Group: AirborneWindEnergy Message: 21670 From: joe_f_90032 Date: 1/10/2017
Subject: Claim: new super strong material that wants to float in air

Group: AirborneWindEnergy Message: 21671 From: dave santos Date: 1/10/2017
Subject: Re: Enhanced accuracy for tracking tethered airborne vehicles

Group: AirborneWindEnergy Message: 21672 From: joe_f_90032 Date: 1/10/2017
Subject: Re: LTA via heated humid air?

Group: AirborneWindEnergy Message: 21673 From: joe_f_90032 Date: 1/10/2017
Subject: Beyond Firefly solar balloon?

Group: AirborneWindEnergy Message: 21674 From: dave santos Date: 1/10/2017
Subject: Re: Beyond Firefly solar balloon?

Group: AirborneWindEnergy Message: 21675 From: joe_f_90032 Date: 1/10/2017
Subject: Horizontal Tail Surface US 20150375847 A1

Group: AirborneWindEnergy Message: 21676 From: Joe Faust Date: 1/10/2017
Subject: Elevated radar system

Group: AirborneWindEnergy Message: 21677 From: Joe Faust Date: 1/11/2017
Subject: Aerodynamic Analysis of a Class II High-Performance Hang Glider –

Group: AirborneWindEnergy Message: 21678 From: Joe Faust Date: 1/11/2017
Subject: Conceptualization and Multi-Objective Optimization of the Electric S

Group: AirborneWindEnergy Message: 21679 From: dave santos Date: 1/11/2017
Subject: Re: Elevated radar system

Group: AirborneWindEnergy Message: 21680 From: dave santos Date: 1/11/2017
Subject: Re: [AWES] Aerodynamic Analysis of a Class II High-Performance Hang

Group: AirborneWindEnergy Message: 21681 From: dave santos Date: 1/11/2017
Subject: Re: Conceptualization and Multi-Objective Optimization of the Electr

Group: AirborneWindEnergy Message: 21682 From: dave santos Date: 1/11/2017
Subject: AWE discussed on Facebook

Group: AirborneWindEnergy Message: 21683 From: Joe Faust Date: 1/11/2017
Subject: AWES Airfoils

Group: AirborneWindEnergy Message: 21684 From: Joe Faust Date: 1/11/2017
Subject: Carrousel, carousel

Group: AirborneWindEnergy Message: 21685 From: dave santos Date: 1/11/2017
Subject: Re: Carrousel, carousel

Group: AirborneWindEnergy Message: 21686 From: joe_f_90032 Date: 1/11/2017
Subject: Re: Carrousel, carousel

Group: AirborneWindEnergy Message: 21687 From: dave santos Date: 1/11/2017
Subject: Dancing-Arch AWES Concept

Group: AirborneWindEnergy Message: 21688 From: dave santos Date: 1/11/2017
Subject: Progress in Firefighting-Kites

Group: AirborneWindEnergy Message: 21689 From: Joe Faust Date: 1/12/2017
Subject: Compressd graphene sponge

Group: AirborneWindEnergy Message: 21690 From: Joe Faust Date: 1/12/2017
Subject: Energy-kite patentee Selsam using potential energy for gliding-kite

Group: AirborneWindEnergy Message: 21691 From: Joe Faust Date: 1/12/2017
Subject: Re: Compressd graphene sponge

Group: AirborneWindEnergy Message: 21692 From: joe_f_90032 Date: 1/12/2017
Subject: Re: Compressd graphene sponge

Group: AirborneWindEnergy Message: 21693 From: dave santos Date: 1/12/2017
Subject: Re: Compressd graphene sponge

Group: AirborneWindEnergy Message: 21694 From: dave santos Date: 1/12/2017
Subject: Re: Compressd graphene sponge

Group: AirborneWindEnergy Message: 21695 From: joe_f_90032 Date: 1/12/2017
Subject: Re: Hydrogen

Group: AirborneWindEnergy Message: 21696 From: joe_f_90032 Date: 1/13/2017
Subject: Open Franklin

Group: AirborneWindEnergy Message: 21697 From: dave santos Date: 1/13/2017
Subject: Groundwater Replenishment from Seasonal Runoff by Kites

Group: AirborneWindEnergy Message: 21698 From: dave santos Date: 1/13/2017
Subject: Dutch coverage of Shell's AWE investment in KPS

Group: AirborneWindEnergy Message: 21699 From: dave santos Date: 1/13/2017
Subject: E Kite Prototype Video

Group: AirborneWindEnergy Message: 21700 From: dave santos Date: 1/13/2017
Subject: India's kite culture v electric utility planning




Group: AirborneWindEnergy Message: 21651 From: Joe Faust Date: 1/10/2017
Subject: Methods for perching

Methods for perching

Applicants:GOOGLE INC. [US/US]; 1600 Amphitheatre Parkway Mountain View, CA 94043 (US)
Inventors:HACHTMANN, Brian; (US).
VANDER LIND, Damon; (US)


Priority Data:
14/144,159 30.12.2013 US
====================

Note: Use the tabs on reached page to explore more deeply. 

======================
Same, but from a different server: 
Publication numberWO2015102870 A1
Publication typeApplication
Application numberPCT/US2014/070366
Publication dateJul 9, 2015
Filing dateDec 15, 2014
Priority dateDec 30, 2013
Also published asCN105874199AUS9156565US201 50183527
InventorsBrian HachtmannLind Damon Vander
ApplicantGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: PatentscopeEspacenet
Group: AirborneWindEnergy Message: 21652 From: Joe Faust Date: 1/10/2017
Subject: Improved tether winding

Inventors:HACHTMANN, Brian; (US).
VANDER LIND, Damon; (US)


Clip from abstract:  "The tether may be wound about a drum when the AWT is not in flight, and the drum may include a helical groove of varying pitch to receive the tether. An asymmetrical levelwind may be positioned adjacent to the drum and configured to move along the drum and guide the tether onto the drum."


Group: AirborneWindEnergy Message: 21653 From: Joe Faust Date: 1/10/2017
Subject: Systems and Methods for a Winch Drum and Drum Door US 20150183529 A1

Brian Hachtmann, 
Gabe Murphy, 
Damon Vander Lind

====================
Clip from one abstract: 
"er. The winch assembly may include a winch drum and a drum door. The winch assembly may be configured such that the drum door may operate in two or more positions, such as an open position and a closed position, to reduce the likelihood of stability problems occurring at the aerial vehicle during winding or unwinding of the tether.

==========================="
Group: AirborneWindEnergy Message: 21654 From: Joe Faust Date: 1/10/2017
Subject: Systems and Apparatus for Cable Management US 20150180186 A
Damon Vander Lind, 
Brian Hachtmann

Publication numberUS20150180186 A1
Publication typeApplication
Application numberUS 14/137,724
Publication dateJun 25, 2015
Filing dateDec 20, 2013
Priority dateDec 20, 2013
Also published asCN106030102AEP3084211A1WO2 015094668A1
InventorsDamon Vander LindBrian Hachtmann
Original AssigneeGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: USPTOUSPTO AssignmentEspacenet
-----
============================== =======
Clip from one abstract: 
"The aerial vehicle may be tethered to a ground station via a tether. As a result of continuous circular flights paths, the tether may rotate continuously in one direction. Thus, it may be desirable to have a cable management apparatus that allows for tether rotation and helps reduce strain on the tether."
Group: AirborneWindEnergy Message: 21655 From: dave santos Date: 1/10/2017
Subject: Re: Tether Termination Systems and Methods
These GoogleX patents provide rare disclosure into its secretive Makani program (eg. they still hew to their "AWT" coinage, even though everyone else moved onto the FAA designation- AWES. Staff engineers only known in PR photots finally get public names in the patents, but these folks clearly got stuck with the entrenched high-complexity concept that Makani founders bequeathed them. So they are seen in these patents playing desperate whack-a-mole with endless follow-on complications. The devil is in the shear mass of details, most of which are competently designed, but hardly tested. There are potential failure points everywhere that simpler AWES concepts skip altogether. In aviation, the arc has been from perfected simplicity to slowly perfected complexity. Makani skipped over the perfected simplicity stage. 

There was an interesting detail in one these patents where Wing7 is shown taking off from its perch in normal airplane attitude, dragging its tether up under its belly. The problem is reaching minimum horizontal flight speed from the perch, so they switched to VTOL, which has severe scaling challenges. One can see the wheels turning in the engineering staff heads, apparently in vain, stuck in 2017 with a "utility-scale" concept already obsolete, if not DOA, in 2009, when first disclosed. Makani has been perhaps the least agile AWES developer, unable to change course with the rest of the R&D community, as the engineering lessons continue apace. Scaling limits in particular are better understood today. GoogleX still has a chance to develop a cool drone-toy based on the M600, to try and grab a piece of Peter Sharp's market :)


On Tuesday, January 10, 2017 11:17 AM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  


Page bookmarkUS2016102654 (A1)  -  Tether Termination Systems and Methods
Inventor(s):GILROYSMITH BRYAN CHRISTOPHER [US];
PATTEN ELIAS WOLFGANG [US];
HACHTMANN BRIAN [US] 
+
Applicant(s):GOOGLE INC [US] +
Classification:
- international:B64C39/02B64F1/36F03D9/00
- cooperative:
Application number:US201414513119 20141013       Global Dossier
Priority number(s):US201414513119 20141013
Also published as:


Group: AirborneWindEnergy Message: 21656 From: Joe Faust Date: 1/10/2017
Subject: Systems and methods for controlling rotation and twist of a tether W
  1. PATTEN, Elias, Wolfgang; (US).
  2. VANDER LIND, Damon; (US).
  3. GILROYSMITH, Bryan, Christopher; (US).
  4. HACHTMANN, Brian; (US)
Group: AirborneWindEnergy Message: 21657 From: Joe Faust Date: 1/10/2017
Subject: BIASED COMPOUND RADIAL PLAIN BEARING FOR INCREASED LIFE IN OSCILLATI

BIASED COMPOUND RADIAL PLAIN BEARING FOR INCREASED LIFE IN OSCILLATING PIVOT MOTION  


Page bookmarkWO2015127087 (A1)  -  BIASED COMPOUND RADIAL PLAIN BEARING FOR INCREASED LIFE IN OSCILLATING PIVOT MOTION
Inventor(s):HACHTMANN BRIAN [US] +
Applicant(s):GOOGLE INC [US] +
Classification:
- international:F16C11/06F16C17/12F16C33/ 10F16C33/12F16C33/20
- cooperative:
Application number:WO2015US16629 20150219       Global Dossier
Priority number(s):US201414184026 20140219
Also published as:

============================== ======Editorial note: ===
Study efficiency: 
Unless one is deeply involved in bearings in an AWES where the topic might apply, 
then studying this patent might not be an efficient use of RAD time. 
Group: AirborneWindEnergy Message: 21658 From: Joe Faust Date: 1/10/2017
Subject: Enhanced accuracy for tracking tethered airborne vehicles
Publication numberUS9214022 B1
Publication typeGrant
Application numberUS 14/325,187
Publication dateDec 15, 2015
Filing dateJul 7, 2014
Priority dateJul 7, 2014
Also published asUS20160005159WO2016007275A1
InventorsKurt HallamaskBrian HachtmannRob NelsonCorwin HardhamKenny JensenElias Wolfgang PattenLess «
Original AssigneeGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: USPTOUSPTO AssignmentEspacenet
Note: By following links to "original documents" 
the full PDF of document used in application may be read;
this may occur in Espacenet space linked or in other
patents in the Patentscope space.   Similarly, but with
sometimes more difficulty in the USPTO space. 

Following the "priority date" seems to help distinguish
the content of seemingly similar patents. 
Group: AirborneWindEnergy Message: 21659 From: Joe Faust Date: 1/10/2017
Subject: Pivoting perch for flying wind turbine parking WO 2016148870 A1

Brian Hachtmann,
Lind Damon Vander,
Maaike Evers,
Michael Simonian


Publication numberWO2016148870 A1
Publication typeApplication
Application numberPCT/US2016/019737
Publication dateSep 22, 2016
Filing dateFeb 26, 2016
Priority dateMar 15, 2015
Also published asUS20160264260
InventorsBrian HachtmannLind Damon VanderMaaike EversMichael Simonian
ApplicantGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: PatentscopeEspacenet
Group: AirborneWindEnergy Message: 21660 From: dave santos Date: 1/10/2017
Subject: Re: Systems and Methods for a Winch Drum and Drum Door US 2015018352
An AWES winch drum (presumably "extruded"), with a servo-door in the drum-face that opens and closes, with the tether termination inside, like a cuckoo clock (!)

This surpasses even Guadencio Labrador's wonderfully surrealist AWES designs. GoogleX has finally invented something really original in AWE.


On Tuesday, January 10, 2017 11:17 AM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  

Brian Hachtmann, 
Gabe Murphy, 
Damon Vander Lind

====================
Clip from one abstract: 
"er. The winch assembly may include a winch drum and a drum door. The winch assembly may be configured such that the drum door may operate in two or more positions, such as an open position and a closed position, to reduce the likelihood of stability problems occurring at the aerial vehicle during winding or unwinding of the tether.

==========================="


Group: AirborneWindEnergy Message: 21661 From: Joe Faust Date: 1/10/2017
Subject: Methods and systems for winding a tether US 9352930 B2

Publication numberUS9352930 B2
Publication typeGrant
Application numberUS 14/142,910
Publication dateMay 31, 2016
Filing dateDec 29, 2013
Priority dateDec 29, 2013
Also published asCN106062359AEP3087273A1US2 0150183615WO2015100242A1
InventorsDamon Vander LindElias Wolfgang PattenBrian Hachtmann
Original AssigneeGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: USPTOUSPTO AssignmentEspacenet

Note: Use links on page at Espacenet link above to reach
original documents involved in the patent application. 
Group: AirborneWindEnergy Message: 21662 From: Joe Faust Date: 1/10/2017
Subject: Tether Fatigue Tester 2013 February circa
=====================

Views up to Jan. 10, 2017, of the article: 577
tag: Makani Power, GoogleX, tether testing

Group: AirborneWindEnergy Message: 21663 From: dave santos Date: 1/10/2017
Subject: Re: Systems and Apparatus for Cable Management US 20150180186 A
Compared with endless existing highly refined "Systems and Apparatus for Cable Management" in standard engineering fields, this patent seems more like a student exercise, of learning on the job, but not learning under a winch-industry leader. Makani could have chosen to partner strategically with a top-drawer supply chain for services like winch-tech R&D, but instead chose to DIY almost everything as an epic hacking party. What fun it has been (excepting poor Corwin), but the end result is more hopeful-monster than practical-system. This patent seems to have been nothing more than "thinking out loud" soon superseded by follow-on patents.  GoogleX is defensive-patenting aggressively along the R&D timeline, using its superior capitalization, but there still needs to be some inventive leap, to really matter. Payne's two short AWE patents, paid out-of-pocket, may contain more key art than GoogleX will ever come with, after  
Damon Vander Lind, 
Brian Hachtmann

Publication numberUS20150180186 A1
Publication typeApplication
Application numberUS 14/137,724
Publication dateJun 25, 2015
Filing dateDec 20, 2013
Priority dateDec 20, 2013
Also published asCN106030102AEP3084211A1WO2 015094668A1
InventorsDamon Vander LindBrian Hachtmann
Original AssigneeGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: USPTOUSPTO AssignmentEspacenet
-----
============================== =======
Clip from one abstract: 
"The aerial vehicle may be tethered to a ground station via a tether. As a result of continuous circular flights paths, the tether may rotate continuously in one direction. Thus, it may be desirable to have a cable management apparatus that allows for tether rotation and helps reduce strain on the tether."


Group: AirborneWindEnergy Message: 21664 From: dave santos Date: 1/10/2017
Subject: Re: Pivoting perch for flying wind turbine parking WO 2016148870 A1
While these patents may look like a classic "patent thicket", kite patents are not a thicket, since most of them are expired, including the most essential AWE concepts. Once again, what we see here is the almost day-by-day thinking of Makani's engineers on a wild goose chase. Here a teetering perch is claimed, as if anyone needed one.


On Tuesday, January 10, 2017 12:01 PM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  

Brian Hachtmann,
Lind Damon Vander,
Maaike Evers,
Michael Simonian


Publication numberWO2016148870 A1
Publication typeApplication
Application numberPCT/US2016/019737
Publication dateSep 22, 2016
Filing dateFeb 26, 2016
Priority dateMar 15, 2015
Also published asUS20160264260
InventorsBrian HachtmannLind Damon VanderMaaike EversMichael Simonian
ApplicantGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: PatentscopeEspacenet


Group: AirborneWindEnergy Message: 21665 From: dave santos Date: 1/10/2017
Subject: Re: Methods and systems for winding a tether US 9352930 B2
Once again, the elusive Faired Tether makes its appearance. GoogleX knows how to wind it up, but not how to fly it and make it pay. Faired tethers are still not competitive with round tethers by economic and performance criteria. We are still awaiting proof-of-concept cases. Strumming, excess mass, excess cost, and so on, remain challenges.


On Tuesday, January 10, 2017 12:26 PM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  

Publication numberUS9352930 B2
Publication typeGrant
Application numberUS 14/142,910
Publication dateMay 31, 2016
Filing dateDec 29, 2013
Priority dateDec 29, 2013
Also published asCN106062359AEP3087273A1US2 0150183615WO2015100242A1
InventorsDamon Vander LindElias Wolfgang PattenBrian Hachtmann
Original AssigneeGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: USPTOUSPTO AssignmentEspacenet

Note: Use links on page at Espacenet link above to reach
original documents involved in the patent application. 


Group: AirborneWindEnergy Message: 21666 From: dave santos Date: 1/10/2017
Subject: Re: BIASED COMPOUND RADIAL PLAIN BEARING FOR INCREASED LIFE IN OSCIL
An odd claim to have reinvented the bearing, as if no existing bearing method sufficed. This seems to be another non-blocking patent, where a good enough bearing solution likely already exists for anyone needing a work-around.


On Tuesday, January 10, 2017 12:01 PM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  

BIASED COMPOUND RADIAL PLAIN BEARING FOR INCREASED LIFE IN OSCILLATING PIVOT MOTION  


Page bookmarkWO2015127087 (A1)  -  BIASED COMPOUND RADIAL PLAIN BEARING FOR INCREASED LIFE IN OSCILLATING PIVOT MOTION
Inventor(s):HACHTMANN BRIAN [US] +
Applicant(s):GOOGLE INC [US] +
Classification:
- international:F16C11/06F16C17/12F16C33/ 10F16C33/12F16C33/20
- cooperative:
Application number:WO2015US16629 20150219       Global Dossier
Priority number(s):US201414184026 20140219
Also published as:

============================== ======Editorial note: ===
Study efficiency: 
Unless one is deeply involved in bearings in an AWES where the topic might apply, 
then studying this patent might not be an efficient use of RAD time. 


Group: AirborneWindEnergy Message: 21667 From: dave santos Date: 1/10/2017
Subject: Re: Tether Fatigue Tester 2013 February circa
Not disclosed is whether any Makani complex structural-conductive tethers tested survived "millions of cycles" under realistic load and thermal conditions, but this webpage does show a subcontracted engineering service for Makani, albeit for a ancillary-testing purpose.


On Tuesday, January 10, 2017 12:36 PM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  

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

Views up to Jan. 10, 2017, of the article: 577
tag: Makani Power, GoogleX, tether testing



Group: AirborneWindEnergy Message: 21668 From: Joe Faust Date: 1/10/2017
Subject: Ground Station with Shuttled Drum for Tethered Aerial Vehicles

Publication numberUS20150158600 A1
Publication typeApplication
Application numberUS 14/143,787
Publication dateJun 11, 2015
Filing dateDec 30, 2013
Priority dateDec 9, 2013
Also published asWO2015088971A1
InventorsBrian HachtmannDamon Vander Lind
Original AssigneeGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: USPTOUSPTO AssignmentEspacenet

External Links: Patentscope

Group: AirborneWindEnergy Message: 21669 From: joe_f_90032 Date: 1/10/2017
Subject: What is missing here?

What  platform family seems to be missing here: 

Aircraft List | NASA Airborne Science Program


Group: AirborneWindEnergy Message: 21670 From: joe_f_90032 Date: 1/10/2017
Subject: Claim: new super strong material that wants to float in air

Astro Teller of Google-X

"'Now we’re investigating a new material that’s super strong but wants to float. 

'It could change how we interact with the sky, buildings, transportation, and more. Stay tuned!'

===========================
In the following page, avoid letting the first photo distract from the topic.

Google X lab: We're making something that defies gravity

Google could be about to eclipse Boeing's bone-inspired micro-lattice with a material that "wants to float".  [ in air, my guess]


"Boeing's metal creation is light but still falls to earth when dropped. Not so Google's new secret moonshot, according to head of X, Astro Teller, who says its material "wants to float"."

Liam Tung

By Liam Tung |  February 17, 2016 

================================
Idea: Google X, consider bringing the material to energy kite systems. 

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

 



 

Group: AirborneWindEnergy Message: 21671 From: dave santos Date: 1/10/2017
Subject: Re: Enhanced accuracy for tracking tethered airborne vehicles
A strange Ghost-Patent, as it cites Corwin as one of the inventors, yet was filed long after his death. The winch drum door is missing, instead there is an open gap in the drum. Whew! What a patent show today...

Meanwhile, the Makani Hawaii Five-O trail seems to hinge on whether they were granted a required construction permit in Hawaii County. Ordinarily, one would expect an environmental assessment for such a crass industrial effort. Otherwise, no sign yet of any other pre-test activity, either from my uncle's investigation or media sources. Makani really should have heeded ChrisC's advice to test at Edwards AFB (not far the Bay Area), where so many aerospace firsts happen. This is not necessarily a contradiction with an AWE military moratorium, but could help ease the slow societal transformation of military-might to a future model of global humanitarian disaster response. The risk of Makani lighting the Hawaiian prairie on fire by means of kites could itself be a disaster of "Earth, Wind, and Fire".


On Tuesday, January 10, 2017 12:01 PM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Publication numberUS9214022 B1
Publication typeGrant
Application numberUS 14/325,187
Publication dateDec 15, 2015
Filing dateJul 7, 2014
Priority dateJul 7, 2014
Also published asUS20160005159WO2016007275A1
InventorsKurt HallamaskBrian HachtmannRob NelsonCorwin HardhamKenny JensenElias Wolfgang PattenLess «
Original AssigneeGoogle Inc.
Export CitationBiBTeXEndNoteRefMan
External Links: USPTOUSPTO AssignmentEspacenet
Note: By following links to "original documents" 
the full PDF of document used in application may be read;
this may occur in Espacenet space linked or in other
patents in the Patentscope space.   Similarly, but with
sometimes more difficulty in the USPTO space. 

Following the "priority date" seems to help distinguish
the content of seemingly similar patents. 


Group: AirborneWindEnergy Message: 21672 From: joe_f_90032 Date: 1/10/2017
Subject: Re: LTA via heated humid air?

I placed a few notes in a conversation-started form found on page: Availability | Airloy Ultramaterials: Strong Aerogels from Aerogel Technologies
Try your quest with them?

Form robot came this reply: Thank you for your interest in Airloy Ultramaterials! Your message has been sent. An Aerogel Technologies representative will contact you shortly."

==================
---In AirborneWindEnergy@yahoogroups.com, <joefaust333@gmail.com
Group: AirborneWindEnergy Message: 21673 From: joe_f_90032 Date: 1/10/2017
Subject: Beyond Firefly solar balloon?

With modern materials, how much improvement might be available over FireFly


Holding the heated air better?

Grabbing the solar heat better?

Stronger-lighter envelope?

Combinations with Airloy (tm) of some specification?

Warmed aerographite fill? 

Beyond PierreB's solar-balloon thoughts?


Solar balloon - Wikipedia


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

... toward AWES lifters avoiding helium or hydrogen or the like?

Group: AirborneWindEnergy Message: 21674 From: dave santos Date: 1/10/2017
Subject: Re: Beyond Firefly solar balloon?
The severe limitation to solar ballooning is inability to cope with even low wind. Even propane heated balloons do not cope with wind well at far smaller scale than equivalent-lift solar balloons. The best use of solar in ballooning seems to be to boost lift by other means.

Even the looming graphene revolution, aerogel insulation, and so on, will not make ballooning easy. Balloon safety will remain at the mercy of weather. Even modern improved airships will long depend on hangars and cautious weather planning, at great operational cost. Its no surprise that solar ballooning has hardly advanced since 1976.


On Tuesday, January 10, 2017 5:16 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
With modern materials, how much improvement might be available over FireFly

Holding the heated air better?
Grabbing the solar heat better?
Stronger-lighter envelope?
Combinations with Airloy (tm) of some specification?
Warmed aerographite fill? 
Beyond PierreB's solar-balloon thoughts?


====================================
... toward AWES lifters avoiding helium or hydrogen or the like?


Group: AirborneWindEnergy Message: 21675 From: joe_f_90032 Date: 1/10/2017
Subject: Horizontal Tail Surface US 20150375847 A1

Horizontal Tail Surface

US2015375847 (A1) 


Peter Kinne, 

Damon Vander Lind, 

Gregor Cadman


Priority data: 30 June 2014 (30.06.2014)

Clipped abstract:

"Abstract:
An aerial vehicle including a fuselage, a

main wing attached to the fuselage, a support structure extending

upwardly from the fuselage and having a front surface

facing the main wing, an overhang positioned on a top

of the support structure and extending towards the main

wing, one or more rotating actuators positioned on the overhang,

a rear elevator attached to the one or more rotating actuators

that are configured to move the rear elevator from a

flying mode position where a leading edge of the rear elevator

faces the main wing to a hover mode position where the

major surfaces of the rear elevator faces the main wing, and

wherein the major surfaces of the rear elevator remain in

front of the front surface of the support structure when the

rear elevator is moved from the flying mode position to the

hover mode position."

 

Group: AirborneWindEnergy Message: 21676 From: Joe Faust Date: 1/10/2017
Subject: Elevated radar system
EP 2728666 A1
Publication numberEP2728666 A1
Publication typeApplication
Application numberEP20120190752
Publication dateMay 7, 2014
Filing dateOct 31, 2012
Priority dateOct 31, 2012
InventorsWiegard JongsmaHugo Anbeekder Berg Simon Van
ApplicantThales Nederland B.V.
Export CitationBiBTeXEndNoteRefMan
External Links: EspacenetEP Register
Group: AirborneWindEnergy Message: 21677 From: Joe Faust Date: 1/11/2017
Subject: Aerodynamic Analysis of a Class II High-Performance Hang Glider –
AWES students exploring kited rigid wings may find value in the following paper 
which may be studied/discussed openly in this topic thread. 


Xiao Huang
The University of Oklahoma, Norman, Oklahoma, OK 73019

Kiran K. Pippalapalli
Rocketplane Ltd, Inc, OK 73157

Bernd Chudoba
The University of Texas at Arlington, Arlington, TX 76019 
Group: AirborneWindEnergy Message: 21678 From: Joe Faust Date: 1/11/2017
Subject: Conceptualization and Multi-Objective Optimization of the Electric S

This topic thread might be used to study matters mentioned in the linked paper. 

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

Technical paper, 24 pages, PDF format

Date: ? circa 2011

Conceptualization and Multi-Objective Optimization of the Electric System of an Airborne Wind Turbine


J. W. Kolar, T. Friedli, F. Krismer, A. Looser, M. Schweizer

Power Electronic Systems Laboratory (PES)

ETH Zurich, 8092 Zurich, Switzerland


P. Steimer

ABB Switzerland Ltd.

5300 Turgi, Switzerland


J. Bevirt

Joby Energy, Inc.

Santa Cruz, CA 95060

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

The paper's 

"ACKNOWLEDGMENT The authors would like to acknowledge highly helpful discussions on AWT with several employees of Joby Energy (H. Hallam, M. Diederik, T. Grimley, D. Chebot), N. Pallo, MIT, Prof. M. Casey, consultant in turbo machinery, and C. Houle from SwissKitePower"

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

The paper's references:


REFERENCES

[1] A. Betz, Windenergie und ihre Ausnutzung in Windm¨uhlen (in German).

Bandenhoeck & Ruprecht: G¨ottingen, 1926.

[2] M. L. Loyd, “Crosswind kite power,” Journal of Energy, vol. 4, no. 3,

pp. 106–111, May/June 1980.

[3] SwissKitePower. Accessed: April 2011. [Online]. Available:

http://www.swisskitepower.ch/

[4] Kite Gen. Accessed: April 2011. [Online]. Available: http://kitegen.com/

[5] L. Fagiano, M. Milanese, and D. Piga, “High altitude wind power

generation,” IEEE Trans. Energy Convers., vol. 25, no. 1, pp. 168–180,

Mar. 2010.

[6] W. J. Ockels, B. Lansdorp, J. Breukels, and G. Spierenburg, “The laddermill:

work in progress,” in Proc. European Wind Energy Conference,

London, UK, Nov. 22–25, 2004, pp. 1–7.

[7] M. Diehl and B. Houska, “Windenergienutzung mit schnell fliegenden

Flugdrachen: Eine Herausforderung f¨ur die Optimierung und Regelung

(in German) – Wind power via fast flying kites: A challenge for

optimization and control,” at-automatisierungstechnik, vol. 57, no. 10,

pp. 525–533, Jul. 2009.

[8] B. Houska and M. Diehl, “Optimal control for power generating kites,”

in Proc. 9th European Control Conference ECC ’07, Kos, Greece, Jul.

2–5, 2007, pp. 3560–3567.

[9] Joby Energy. Accessed: April 2011. [Online]. Available:

http://www.jobyenergy.com

[10] Sky WindPower. Accessed: April 2011. [Online]. Available:

http://www.skywindpower.com

[11] Makani Power. Accessed: April 2011. [Online]. Available:

http://www.makanipower.com

[12] J. Sun, “Small-signal methods for ac distributed power systems–a

review,” IEEE Trans. Power Electron., vol. 24, no. 11, pp. 2545–2554,

Nov. 2009.

[13] D. Boroyevich, I. Cvetkovi´c, D. Dong, R. Burgos, F. Wang, and F. Lee,

“Future electronic power distribution systems – a contemplative view,”

in Proc. 12th International Conference on Optimization of Electrical and

Electronic Equipment OPTIM ’10, Brasov, Romania, May 20–22, 2010,

pp. 1369–1380.

[14] J. W. Kolar, J. Biela, and J. Minib¨ock, “Exploring the pareto front of

multi-objective single-phase PFC rectifier design optimization – 99.2%

efficiency vs. 7 kW/dm3 power density,” in Proc. 6th IEEE International

Power Electronics and Motion Conference IPEMC ’09, Wuhan, China,

May 17–20, 2009, pp. 1–21.

[15] J. W. Kolar, J. Biela, S. Waffler, T. Friedli, and U. Badst¨ubner, “Performance

trends and limitations of power electronic systems,” in Proc.

6th International Conference on Integrated Power Electronics Systems

CIPS ’10, Nuremberg, Germany, Mar. 16–18, 2010, pp. 1–20.

[16] Cortland Cable. Accessed: April 2011. [Online]. Available:

http://www.cortlandcable.com

[17] E. Murtola, S. M. Neuhold, and P. Anliker, “Hyperelastic high voltage

conductor for electric drilling,” in Proc. 4th International Conference on

Composite Materials & Structures for Offshore Operations CMOO ’05,

Houston (TX), USA, Oct. 4–6, 2005, pp. 1–11.

[18] S. M. Neuhold, “A hyper elastic conductor for bulk energy transfer in

the wall of spoolable tubes for electric deep drilling,” Ph.D. dissertation,

Swiss Federal Institute of Technology Zurich (ETH Z¨urich), 2007.

[19] Huber+Suhner, “Radox GKW Cables,” datasheet, 2011.

[20] Klotz a+i+s, “AWG Tabelle,” data table, 2005.

[21] P. Ragot, M. Markovic, and Y. Perriard, “Optimization of electric motor

for a solar airplane application,” IEEE Trans. Ind. Appl., vol. 42, no. 4,

pp. 1053–1061, July/Aug. 2006.

[22] J. Cros and P. Viarouge, “Synthesis of high performance PM motors with

concentrated windings,” IEEE Trans. Energy Convers., vol. 17, no. 2,

pp. 248–253, Jun. 2002.

[23] M. Schweizer, I. Lizama, T. Friedli, and J. W. Kolar, “Comparison of the

chip area usage of 2-level and 3-level voltage source converter topologies,”

in Proc. 36th IEEE Industrial Electronics Conference IECON ’10,

2010, pp. 391–396.

[24] T. Friedli and J. W. Kolar, “Comprehensive comparison of three-phase

ac–ac matrix converter and voltage dc-link back-to-back converter systems,”

in Proc. IEEE/IEEJ International Power Electronics Conference

-ECCE Asia- IPEC ’10, Sapporo, Japan, Jun. 21–24, 2010, pp. 2789–

2798.

[25] ——, “A semiconductor area based assessment of ac motor drive

converter topologies,” in Proc. 24th IEEE Applied Power Electronics

Conference and Exposition APEC ’09, Washington DC, USA, Feb. 15–

19, 2009, pp. 336–342.

[26] U. Drofenik, G. Laimer, and J. W. Kolar, “Theoretical converter power

density limits for forced convection cooling,” in Proc. 26th European

Power Electronics/Intelligent Motion/Power Quality Conference

PCIM ’05, Nuremberg, Germany, Jun. 7–9, 2005, pp. 1–12.

[27] M. H. Kheraluwala, R. W. Gascoigne, D. M. Divan, and E. D. Baumann,

“Performance characterization of a high-power dual active bridge dc-todc

converter,” IEEE Trans. Ind. Appl., vol. 28, no. 6, pp. 1294–1301,

Nov./Dec. 1992.

[28] F. Krismer, “Modeling and optimization of bidirectional dual active

bridge dc–dc converter topologies,” Ph.D. dissertation, Swiss Federal

Institute of Technology Zurich (ETH Z¨urich), 2010.

[29] F. Krismer and J. W. Kolar, “Efficiency-optimized high current dual

active bridge converter for automotive applications,” IEEE Trans. Ind.

Electron., pp. 1–16, 2011, accepted for future publication.

[30] ——, “Accurate power loss model derivation of a high-current dual

active bridge converter for an automotive application,” IEEE Trans. Ind.

Electron., vol. 57, no. 3, pp. 881–891, March 2010.

[31] F. W. Lanchester, “A contribution to the theory of propulsion and the

screw propeller,” Trans. of the Inst. of Naval Architects, vol. LVII, pp.

98–116, 1915.

[32] A. J. Healey, S. M. Rock, S. Cody, D. Miles, and J. P. Brown, “Toward an

improved understanding of thruster dynamics for underwater vehicles,”

IEEE J. Ocean. Eng., vol. 20, no. 4, pp. 354–361, Oct. 1995.

[33] G. G. Carlos, “Design of a 3.5 meters rotor two bladed horizontal axis

wind turbine,” in Proc. 20th International Conference on Electronics,

Communications and Computer CONIELECOMP ’10, Puebla, Mexico,

Feb. 23–24, 2010, pp. 247–251.


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

Paper's

"Index Terms—airborne wind turbine, multi-objective optimization,

power electronics, wind power, renewable energy"

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

A selected quote from the paper: 

"The basic idea here consists of implementing only the blades of the windmill in the form of a power kite flying at high speed perpendicular to the wind, thus avoiding the entire mechanical support structure of conventional windmills. The ideas go as far as exploitation of the wind energy in the jetstream at an altitude of 10 000 m with wind speeds of up to 50 m/s (compared to typically 10 m/s near the ground) and/or a 125-fold higher power density (W/m2) according to (1) compared for example to vW = 10 m/s."

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


Group: AirborneWindEnergy Message: 21679 From: dave santos Date: 1/11/2017
Subject: Re: Elevated radar system
This kite patent can be classed with all those that adopt the kite to do miscellaneous lifting jobs. On one hand, it might be novel to deliver pizza or take trash away by kites (like KiteLab Ilwaco did during a 2008 beach clean-up, loading a large dumpster), on the other hand its quite obvious there is no end to kite-lifting ideas. In this case, radar on an aircraft is already old prior art. There is not much inventive-leap here.


On Tuesday, January 10, 2017 8:13 PM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
EP 2728666 A1
Publication numberEP2728666 A1
Publication typeApplication
Application numberEP20120190752
Publication dateMay 7, 2014
Filing dateOct 31, 2012
Priority dateOct 31, 2012
InventorsWiegard JongsmaHugo Anbeekder Berg Simon Van
ApplicantThales Nederland B.V.
Export CitationBiBTeXEndNoteRefMan
External Links: EspacenetEP Register


Group: AirborneWindEnergy Message: 21680 From: dave santos Date: 1/11/2017
Subject: Re: [AWES] Aerodynamic Analysis of a Class II High-Performance Hang
Its an interesting comparison of high-performance HGs, with some good performance data, but no surprises. The analysis neglects careful pilot-oriented comparisons of key flight modes, like minimum safe airspeed at stall, critical to foot-landing. The hottest HGs resort to landing flaps, and require the most expert pilots. One would generally not choose the hottest Class II competition wings for safe insertion of rescuers or military forces in rough terrain, as these authors unrealistically imply. Instead, the parafoil parachute predominates.

Table 4 somehow got wing-area and payload numbers crossed.


On Wednesday, January 11, 2017 7:57 AM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
AWES students exploring kited rigid wings may find value in the following paper 
which may be studied/discussed openly in this topic thread. 


Xiao Huang
The University of Oklahoma, Norman, Oklahoma, OK 73019

Kiran K. Pippalapalli
Rocketplane Ltd, Inc, OK 73157

Bernd Chudoba
The University of Texas at Arlington, Arlington, TX 76019 


Group: AirborneWindEnergy Message: 21681 From: dave santos Date: 1/11/2017
Subject: Re: Conceptualization and Multi-Objective Optimization of the Electr
There is a grim reality hidden in this old (2012) Joby Energy analysis, that the "multi-objective" demand (which sounds like a feature, rather than a defect) is difference between an overly complex flygen aircraft system and a turbine on a pole. In order to get their numbers to work, to analyse equivalent HAWT and flygen AWES, by rated power, the AWES must fly up to 30x higher that the hub height of the HAWT. Its not a promising picture, but helps explain the desperate GoogleX/Makani(Joby) challenge nearing denouement.


On Wednesday, January 11, 2017 7:59 AM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
This topic thread might be used to study matters mentioned in the linked paper. 
============================================================
Technical paper, 24 pages, PDF format
Date: ? circa 2011

J. W. Kolar, T. Friedli, F. Krismer, A. Looser, M. Schweizer
Power Electronic Systems Laboratory (PES)
ETH Zurich, 8092 Zurich, Switzerland

P. Steimer
ABB Switzerland Ltd.
5300 Turgi, Switzerland

J. Bevirt
Joby Energy, Inc.
Santa Cruz, CA 95060
===========================================
The paper's 
"ACKNOWLEDGMENT The authors would like to acknowledge highly helpful discussions on AWT with several employees of Joby Energy (H. Hallam, M. Diederik, T. Grimley, D. Chebot), N. Pallo, MIT, Prof. M. Casey, consultant in turbo machinery, and C. Houle from SwissKitePower"
===========================================
The paper's references:

REFERENCES
[1] A. Betz, Windenergie und ihre Ausnutzung in Windm¨uhlen (in German).
Bandenhoeck & Ruprecht: G¨ottingen, 1926.
[2] M. L. Loyd, “Crosswind kite power,” Journal of Energy, vol. 4, no. 3,
pp. 106–111, May/June 1980.
[3] SwissKitePower. Accessed: April 2011. [Online]. Available:
[4] Kite Gen. Accessed: April 2011. [Online]. Available: http://kitegen.com/
[5] L. Fagiano, M. Milanese, and D. Piga, “High altitude wind power
generation,” IEEE Trans. Energy Convers., vol. 25, no. 1, pp. 168–180,
Mar. 2010.
[6] W. J. Ockels, B. Lansdorp, J. Breukels, and G. Spierenburg, “The laddermill:
work in progress,” in Proc. European Wind Energy Conference,
London, UK, Nov. 22–25, 2004, pp. 1–7.
[7] M. Diehl and B. Houska, “Windenergienutzung mit schnell fliegenden
Flugdrachen: Eine Herausforderung f¨ur die Optimierung und Regelung
(in German) – Wind power via fast flying kites: A challenge for
optimization and control,” at-automatisierungstechnik, vol. 57, no. 10,
pp. 525–533, Jul. 2009.
[8] B. Houska and M. Diehl, “Optimal control for power generating kites,”
in Proc. 9th European Control Conference ECC ’07, Kos, Greece, Jul.
2–5, 2007, pp. 3560–3567.
[9] Joby Energy. Accessed: April 2011. [Online]. Available:
[10] Sky WindPower. Accessed: April 2011. [Online]. Available:
[11] Makani Power. Accessed: April 2011. [Online]. Available:
[12] J. Sun, “Small-signal methods for ac distributed power systems–a
review,” IEEE Trans. Power Electron., vol. 24, no. 11, pp. 2545–2554,
Nov. 2009.
[13] D. Boroyevich, I. Cvetkovi´c, D. Dong, R. Burgos, F. Wang, and F. Lee,
“Future electronic power distribution systems – a contemplative view,”
in Proc. 12th International Conference on Optimization of Electrical and
Electronic Equipment OPTIM ’10, Brasov, Romania, May 20–22, 2010,
pp. 1369–1380.
[14] J. W. Kolar, J. Biela, and J. Minib¨ock, “Exploring the pareto front of
multi-objective single-phase PFC rectifier design optimization – 99.2%
efficiency vs. 7 kW/dm3 power density,” in Proc. 6th IEEE International
Power Electronics and Motion Conference IPEMC ’09, Wuhan, China,
May 17–20, 2009, pp. 1–21.
[15] J. W. Kolar, J. Biela, S. Waffler, T. Friedli, and U. Badst¨ubner, “Performance
trends and limitations of power electronic systems,” in Proc.
6th International Conference on Integrated Power Electronics Systems
CIPS ’10, Nuremberg, Germany, Mar. 16–18, 2010, pp. 1–20.
[16] Cortland Cable. Accessed: April 2011. [Online]. Available:
[17] E. Murtola, S. M. Neuhold, and P. Anliker, “Hyperelastic high voltage
conductor for electric drilling,” in Proc. 4th International Conference on
Composite Materials & Structures for Offshore Operations CMOO ’05,
Houston (TX), USA, Oct. 4–6, 2005, pp. 1–11.
[18] S. M. Neuhold, “A hyper elastic conductor for bulk energy transfer in
the wall of spoolable tubes for electric deep drilling,” Ph.D. dissertation,
Swiss Federal Institute of Technology Zurich (ETH Z¨urich), 2007.
[19] Huber+Suhner, “Radox GKW Cables,” datasheet, 2011.
[20] Klotz a+i+s, “AWG Tabelle,” data table, 2005.
[21] P. Ragot, M. Markovic, and Y. Perriard, “Optimization of electric motor
for a solar airplane application,” IEEE Trans. Ind. Appl., vol. 42, no. 4,
pp. 1053–1061, July/Aug. 2006.
[22] J. Cros and P. Viarouge, “Synthesis of high performance PM motors with
concentrated windings,” IEEE Trans. Energy Convers., vol. 17, no. 2,
pp. 248–253, Jun. 2002.
[23] M. Schweizer, I. Lizama, T. Friedli, and J. W. Kolar, “Comparison of the
chip area usage of 2-level and 3-level voltage source converter topologies,”
in Proc. 36th IEEE Industrial Electronics Conference IECON ’10,
2010, pp. 391–396.
[24] T. Friedli and J. W. Kolar, “Comprehensive comparison of three-phase
ac–ac matrix converter and voltage dc-link back-to-back converter systems,”
in Proc. IEEE/IEEJ International Power Electronics Conference
-ECCE Asia- IPEC ’10, Sapporo, Japan, Jun. 21–24, 2010, pp. 2789–
2798.
[25] ——, “A semiconductor area based assessment of ac motor drive
converter topologies,” in Proc. 24th IEEE Applied Power Electronics
Conference and Exposition APEC ’09, Washington DC, USA, Feb. 15–
19, 2009, pp. 336–342.
[26] U. Drofenik, G. Laimer, and J. W. Kolar, “Theoretical converter power
density limits for forced convection cooling,” in Proc. 26th European
Power Electronics/Intelligent Motion/Power Quality Conference
PCIM ’05, Nuremberg, Germany, Jun. 7–9, 2005, pp. 1–12.
[27] M. H. Kheraluwala, R. W. Gascoigne, D. M. Divan, and E. D. Baumann,
“Performance characterization of a high-power dual active bridge dc-todc
converter,” IEEE Trans. Ind. Appl., vol. 28, no. 6, pp. 1294–1301,
Nov./Dec. 1992.
[28] F. Krismer, “Modeling and optimization of bidirectional dual active
bridge dc–dc converter topologies,” Ph.D. dissertation, Swiss Federal
Institute of Technology Zurich (ETH Z¨urich), 2010.
[29] F. Krismer and J. W. Kolar, “Efficiency-optimized high current dual
active bridge converter for automotive applications,” IEEE Trans. Ind.
Electron., pp. 1–16, 2011, accepted for future publication.
[30] ——, “Accurate power loss model derivation of a high-current dual
active bridge converter for an automotive application,” IEEE Trans. Ind.
Electron., vol. 57, no. 3, pp. 881–891, March 2010.
[31] F. W. Lanchester, “A contribution to the theory of propulsion and the
screw propeller,” Trans. of the Inst. of Naval Architects, vol. LVII, pp.
98–116, 1915.
[32] A. J. Healey, S. M. Rock, S. Cody, D. Miles, and J. P. Brown, “Toward an
improved understanding of thruster dynamics for underwater vehicles,”
IEEE J. Ocean. Eng., vol. 20, no. 4, pp. 354–361, Oct. 1995.
[33] G. G. Carlos, “Design of a 3.5 meters rotor two bladed horizontal axis
wind turbine,” in Proc. 20th International Conference on Electronics,
Communications and Computer CONIELECOMP ’10, Puebla, Mexico,
Feb. 23–24, 2010, pp. 247–251.

============================
Paper's
"Index Terms—airborne wind turbine, multi-objective optimization,
power electronics, wind power, renewable energy"
=======================================================
A selected quote from the paper: 
"The basic idea here consists of implementing only the blades of the windmill in the form of a power kite flying at high speed perpendicular to the wind, thus avoiding the entire mechanical support structure of conventional windmills. The ideas go as far as exploitation of the wind energy in the jetstream at an altitude of 10 000 m with wind speeds of up to 50 m/s (compared to typically 10 m/s near the ground) and/or a 125-fold higher power density (W/m2) according to (1) compared for example to vW = 10 m/s."
=======================================================



Group: AirborneWindEnergy Message: 21682 From: dave santos Date: 1/11/2017
Subject: AWE discussed on Facebook
A typical AWE starting-discussion by new investigators, but on Facebook. The surprising bit is where MikeB pops up to correct a factual error (Wing7 confused with M600)-

Group: AirborneWindEnergy Message: 21683 From: Joe Faust Date: 1/11/2017
Subject: AWES Airfoils
AWES Airfoils
===========
This topic thread invites: 
  • What airfoils are being used on what AWES? For what tasks? Results? Discussion?
  • Data on airfoils?  References?
  • Rigid-wing airfoils?
  • Canopy airfoils?
  • Reynolds number for task/design?


Group: AirborneWindEnergy Message: 21684 From: Joe Faust Date: 1/11/2017
Subject: Carrousel, carousel
This topic thread invites study of carousels with an eye for AWES strategies. 

Start:
Spelling differs. One r or two rs are found variants. 

Wind energy generally has long explored use of carousels which are set on the ground. Distinguish ground-based carousels and carousels that are situated in airborne manner. Airborne carousels have some presence in conceptualizations in AWE.Both regimes are invited to be discussed. 

AWES carousels are materializing in some AWE research experiments. 
Hybrid formats are appearing in the literature: small scale, large scale, plane of rotation of a carousel parallel with ambient wind, plane of rotation of a carousel closely normal to driving tethers, plane of rotation of the carousel oblique to the driving tethers,  ...

 
Attention herein on carousels in AWE is exploratory without prejudice as to whether or not carousels will be in AWES LCOE winning circles of the future. 

Closed-path rails? Are such rail path for karts part of this topic or not?  My preference is to separate closed-path railing of driven karts from carousels; there is a large difference in structures involved between the closed-path rail AWES and AWES where a platform is driven with attention on a central driven shaft; discussion on such distinction is up for discernment of topic; e.g. challenge comes when a closed-path cable is driven within a grounded fixed closed path; such matters might be given a separate topic thread.  Similarly, I'd prefer AWES using linear rails to be a separate topic. If the AWES concept has a rotating circular platform (of various design) that is driven by tethers to kited wings) is a preferred focus for this topic thread; others may help refine the topic.
 
Rehearsing what has shown in the literature may be done by topic participants.  Analytic papers regarding AWES carousels are invited to be recorded and referenced.  Pros and cons of specific carousels? Hybrids? 
============================
Group: AirborneWindEnergy Message: 21685 From: dave santos Date: 1/11/2017
Subject: Re: Carrousel, carousel
The newest interpretation of carousel concepts is to focus on the crosswind phases of rotation as the productive phases, and the upwind-downwind phases as parasitic.

The theoretic conclusion emerges that a "squashed-crosswind" carousel would be optimal, if it could be realized practically. The NTS oval-track was closest to this ideal geometry, but depended on prevailing winds along a fixed cross-axis. Such winds do exist in seasonal and daily oscillation; for example sea-breeze and land-breeze oscillation, and gap-wind oscillation.

Previous carousel phase fixes included furling the upwind phase, and so on, with lots of idle phasing of the wings. The flattened carousel concept is equivalent to Joe Hadzicki's crosswind cableway concept in [Lang, DF, 2004], but with a jibing phase replacing one of JoeF's two tacking phases.


On Wednesday, January 11, 2017 10:31 AM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
This topic thread invites study of carousels with an eye for AWES strategies. 

Start:
Spelling differs. One r or two rs are found variants. 

Wind energy generally has long explored use of carousels which are set on the ground. Distinguish ground-based carousels and carousels that are situated in airborne manner. Airborne carousels have some presence in conceptualizations in AWE.Both regimes are invited to be discussed. 

AWES carousels are materializing in some AWE research experiments. 
Hybrid formats are appearing in the literature: small scale, large scale, plane of rotation of a carousel parallel with ambient wind, plane of rotation of a carousel closely normal to driving tethers, plane of rotation of the carousel oblique to the driving tethers,  ...

 
Attention herein on carousels in AWE is exploratory without prejudice as to whether or not carousels will be in AWES LCOE winning circles of the future. 

Closed-path rails? Are such rail path for karts part of this topic or not?  My preference is to separate closed-path railing of driven karts from carousels; there is a large difference in structures involved between the closed-path rail AWES and AWES where a platform is driven with attention on a central driven shaft; discussion on such distinction is up for discernment of topic; e.g. challenge comes when a closed-path cable is driven within a grounded fixed closed path; such matters might be given a separate topic thread.  Similarly, I'd prefer AWES using linear rails to be a separate topic. If the AWES concept has a rotating circular platform (of various design) that is driven by tethers to kited wings) is a preferred focus for this topic thread; others may help refine the topic.
 
Rehearsing what has shown in the literature may be done by topic participants.  Analytic papers regarding AWES carousels are invited to be recorded and referenced.  Pros and cons of specific carousels? Hybrids? 
============================


Group: AirborneWindEnergy Message: 21686 From: joe_f_90032 Date: 1/11/2017
Subject: Re: Carrousel, carousel
Oblique-plane carousel
(staying ring is not sketched; alternative turret means are not shown)

Group: AirborneWindEnergy Message: 21687 From: dave santos Date: 1/11/2017
Subject: Dancing-Arch AWES Concept
At WSIKF2016, kPower staked out a power-kite near the ground in order to create a stable "shade" arch, but instead it oscillated violently crosswind. Fooling with the short arch lines allowed passive-control of the oscillation within a definite flight envelope. The "dancing-arch" AWES concept was born. 

It became clear that all power kites are arches, at their bridle-points. These "topological arches" all sweep back and forth crosswind in nominal figure-eight/Dutch-roll inherent motion. The discovery is that a power-kite staked out crosswind will spontaneously sweep at a frequency and amplitude determined by the wind velocity and stake-out geometry. 

The new AWES concept that has emerged is to "stake-out" the power kite directly on a crosswind cableway PTO, to generate power with enhanced topological stability. This in effect creates a "kite bar" section along the cable, with a powerful bar-stabilization effect that previous power-kites lacked when rigged from a single point on a cableway.

Other improvements are taking hold. Old-concept cableways are evolving to fly up in the kite-window, rather than the taut horizontal cableways of past years [kFarm ~2014]. A new feature is variable-spread points on the cable, for tuning the oscillation frequency to wind and load.A future dancing-arch mode to develop is "jellyfish oscillation" (which might eventually look like wing-pair flapping).

Another refinement to dancing-arch development is pilot-lift attached to the power-kite via zipline or bungee linkage, and the power-kite may become "crash-proof". By enough such incremental topological-stability improvements, the power kite could soon end up fully tamed for AWE, with all its crosswind potential.

kPower will be developing these new AWES rigging methods for comparative testing.

Open-AWE_IP-Cloud
Group: AirborneWindEnergy Message: 21688 From: dave santos Date: 1/11/2017
Subject: Progress in Firefighting-Kites
Progress toward fire-fighting kites builds on early KiteLab Ilwaco demos (2008-2012) that started with lifting and pouring a pitcher of water on-target, to lifting a water bladder with a 100ft hose for pressurized flow. Various water pumps were driven by kite, to simulate well-pumping. A water bucket was also lifted by power-kite PTO, as a skilled public stunt. 

All the while the Bambi Bucket (as identified on the old AWES Forum) continued to evolve as a primary water lift-based firefighting tool. The pilot-lifter kite also evolved all along, so the integration of the the technologies for firefighting is more promising than ever. kPower is developing a Pacific NW (US and Canada) network of partners in wildfire-response, from the US OR Warm Springs FAA UAS test range (where wildfires are a common seasonal problem), to the BC Canada developers of the Bambi Bucket (discussions in progress).

Here is an excellent overview of Bambi Bucket technology and operations. The applicability of lifter-kites to serve in the helicopter's lift role will be evident-



Group: AirborneWindEnergy Message: 21689 From: Joe Faust Date: 1/12/2017
Subject: Compressd graphene sponge

January 06, 2017

MIT makes compressed graphene sponge material that is 20 times less dense than steel but 10 times stronger, light as stryofoam but stronger than steel



============================
Comment: 
Especially notice the suggestion about applying similar geometry with other materials for hopeful results. 
Group: AirborneWindEnergy Message: 21690 From: Joe Faust Date: 1/12/2017
Subject: Energy-kite patentee Selsam using potential energy for gliding-kite
After storing potential energy in his new gliding-kite system
Doug Selsam returns (from decades ago) to gliding-kite system 
exploration ( hang gliding). See his several videos for some
of his flights and those he may be observing: 

It is my guess that his gliding-kite experiences will lead to some heightened
appreciation of FFAWE and other AWE matters. 
Group: AirborneWindEnergy Message: 21691 From: Joe Faust Date: 1/12/2017
Subject: Re: Compressd graphene sponge
Related paper: 

The mechanics and design of a lightweight three-dimensional graphene assembly

Group: AirborneWindEnergy Message: 21692 From: joe_f_90032 Date: 1/12/2017
Subject: Re: Compressd graphene sponge

In the abstract of the paper of this topic thread: 

"Recent advances in three-dimensional (3D) graphene assembly have shown how we can make solid porous materials that are lighter than air. It is plausible that these solid materials can be mechanically strong enough for applications under extreme conditions, such as being a substitute for helium in filling up an unpowered flight balloon. However, knowledge of the elastic modulus and strength of the porous graphene assembly as functions of its structure has not been available, preventing evaluation of its feasibility."

Is this notion and direction associated with the Google X claim to have a material that likes to "float"? [Yet unverified; see other topic in forum for the Google X deal.]
 
Group: AirborneWindEnergy Message: 21693 From: dave santos Date: 1/12/2017
Subject: Re: Compressd graphene sponge
Vacuum balloon lift at best will be as marginal as helium lift in practice, but graphene foam has vast potential for super-light super-strong foam-core composite airframes with graphene skin. After all, buoyant lift is less essential if your graphene aircraft weighs very little already, and only needs a bit of aerodynamic lift to fly.

The most exciting way to make graphene aircraft would be along lines Wayne German envisioned. The graphene airframe would begin as complex cellular fabric "bag", and then be inflated into rigidity with graphene foam. One of Wayne's coolest ideas (if you pardon the pun) is to blow-mold giant wings within large ice-sheets. Blown-in graphene foam would enhance shape-conformance, especially for flat or negative-curve contours that are difficult by pressurized fabrics (requiring drop-stitch or cellular rib panels).

How wonderful Wayne's brave new world could be, of high-quality airframes popped out cheaply like so many plastic bags. Along another track, Peter Lynn is excited about super-cheap single-skin wings, that could also be graphene-based, for fantastic performance. Unloaded, such aircraft might have a minimum sink-rate like a meter-per-minute or less, allowing reliable soaring in almost any conditions. AWES may depend on the lowest possible sink-rate to handle wind lulls without landing or powered flight.
Group: AirborneWindEnergy Message: 21694 From: dave santos Date: 1/12/2017
Subject: Re: Compressd graphene sponge
We have marginal floating material based on helium, but unfortunately lifting gas retention remains problematic, the atoms leak out of even seemingly leak-tight thin-films.





On Thursday, January 12, 2017 11:21 AM, "dave santos santos137@yahoo.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Vacuum balloon lift at best will be as marginal as helium lift in practice, but graphene foam has vast potential for super-light super-strong foam-core composite airframes with graphene skin. After all, buoyant lift is less essential if your graphene aircraft weighs very little already, and only needs a bit of aerodynamic lift to fly.

The most exciting way to make graphene aircraft would be along lines Wayne German envisioned. The graphene airframe would begin as complex cellular fabric "bag", and then be inflated into rigidity with graphene foam. One of Wayne's coolest ideas (if you pardon the pun) is to blow-mold giant wings within large ice-sheets. Blown-in graphene foam would enhance shape-conformance, especially for flat or negative-curve contours that are difficult by pressurized fabrics (requiring drop-stitch or cellular rib panels).

How wonderful Wayne's brave new world could be, of high-quality airframes popped out cheaply like so many plastic bags. Along another track, Peter Lynn is excited about super-cheap single-skin wings, that could also be graphene-based, for fantastic performance. Unloaded, such aircraft might have a minimum sink-rate like a meter-per-minute or less, allowing reliable soaring in almost any conditions. AWES may depend on the lowest possible sink-rate to handle wind lulls without landing or powered flight.


Group: AirborneWindEnergy Message: 21695 From: joe_f_90032 Date: 1/12/2017
Subject: Re: Hydrogen
Hydrogen storage - Wikipedia

 



Group: AirborneWindEnergy Message: 21696 From: joe_f_90032 Date: 1/13/2017
Subject: Open Franklin

 Wiki note: "Franklin never patented his inventions; in his autobiography he wrote, "... as we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously."Benjamin Franklin - Wikipedia "

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

http://www.energykitesystems.net/BenjaminFranklin/BodyDraggingByKiteFFAWE.JPG


Group: AirborneWindEnergy Message: 21697 From: dave santos Date: 1/13/2017
Subject: Groundwater Replenishment from Seasonal Runoff by Kites
In many parts of the world groundwater has been depleted and will not sustain continued pumping nor recover quickly, even if pumping stops. Like many regions, California's agricultural valleys are facing a double threat; groundwater depletion and a historic reduction in snowmelt runoff in the dry season, due to climate change. 

An ancient strategy being applied is to flood fields from the abrupt run-off of seasonal rain, which stores water in the ground for the dry season, and offers hope of replenishing depleted groundwater. This is fresh water that otherwise would flush into the ocean unused. Flooding large areas itself modifies local climate, creating a lush year-round landscape where desert conditions would otherwise prevail. Limitations of seasonal flooding include expensive reliance on irrigation canals and mechanical pumping dependence.

Irrigation by means of power kites could solve these limitations in many places. Kites could be far cheaper to employ seasonally on a large scale. Kites have a distinct bulk "grunt" pumping capability compared to conventional pumping based on electrical motors. A giant power kite is inherently suited to bulk-lift olympic-pool-scale unit water volumes, up over a river bank in bags or other containers, like train cars, rather than make electricity to drive many small pumps, at a higher capital cost, with conversion inefficiencies. Rather than sit idle in-place most of the year, like conventional fixed irrigation infrastructure, kites would store compactly and travel easily for flexible deployment.

This is a closely related power-kite concept to reverse-hydropower to recycle water at dam reservoirs, discussed in past years. The main tech gap is to identify the best bulk water lifting methods to match to kite grunt-power. A rope-drive, from a nearby kitefield or hilltop down to the streamside, would be a common means to adapt kite-based land-flooding to terrain conditions, much as remote and yarding logging cableways are flexibly rigged.


Group: AirborneWindEnergy Message: 21698 From: dave santos Date: 1/13/2017
Subject: Dutch coverage of Shell's AWE investment in KPS
Here on the US NW Coast, we have been fighting Shell over its Arctic Ocean drilling ambition, but in the UK, the Netherlands-based Oil Giant is funding KPS. Shell was known to fund TUDelft's AWE R&D, and maybe still does, but we can't be sure, given the stealth-venture ethos that permeates TUD AWE research. Oil interests have various fingers into AWE R&D, like SABIC's investment in KiteGen (Saudi money under Dutch managers).

Fortunately for those who do not want to see the oil industry control AWE, these investments are disorganized and follow loud marketing promotions, rather than reflect coordinated R&D along optimal-experimental-design principles. Ten years ago, the fear was that a single focused oil industry player could monopolize AWE, but that did not happen, and the risk seems to be dissipating. Its now hard to imagine that oil interests will understand the AWE challenge and be able to dominate progress. More likely, oil capital will mostly be invested passively, for investment diversification, while other large industrial and governmental players take on the pioneering AWE R&D leadership role.

Its still worthwhile for AWE to employ oil-money here-and-there. In this case, the specific concept of flying two power kites in alternation will be well tested, to help understand if the main advantage of a smoother dual-kite power-cycle outweighs the increased risk and bother of fowling and breakaway.



Group: AirborneWindEnergy Message: 21699 From: dave santos Date: 1/13/2017
Subject: E Kite Prototype Video

E Kite is the TUD affiliated startup with Vestas roots, that has been working for a couple of years without much news. Apparent in this video is a gross scale mismatch between the elaborate large mobile groundgen plant and the small kiteplane prototype, apparently due to the severe scaling limitations of E-VTOL.

Lots of revealing detail in the short clip; no washout seen in the kiteplane wing, so its not highly optimised, and various ad hoc details are at odds with the highly refined groundgen hardware. One gets the sense they have run through a lot of capital, but time is running out to deliver a practical system. It seems that TUD did not mentor this team effectively, as the aerospace partner. Their best hope may be to switch to power-kites matched to the groundgen, to reach rated power capacity of the groundgen unit.



Group: AirborneWindEnergy Message: 21700 From: dave santos Date: 1/13/2017
Subject: India's kite culture v electric utility planning
India's public electric utilities want to change the behavior of kite-flyers (to not rescue their kites from powerlines). Activists counter with a call to bury powerlines. No doubt that overhead powerlines and vibrant kite culture are increasingly at odds, but who expected such headlines? A kite world is emerging. This is a job for KiteMan (Portland, OR, old kite-electrical-safety superhero)-