Messages in AirborneWindEnergy group.                          AWES 22260 to 22314 Page 338 of 440.

Group: AirborneWindEnergy Message: 22260 From: Pierre BENHAIEM Date: 3/12/2017
Subject: Re: Crash Factor Theory

Group: AirborneWindEnergy Message: 22261 From: joe_f_90032 Date: 3/12/2017
Subject: Re: Ping-pong balls

Group: AirborneWindEnergy Message: 22262 From: joe_f_90032 Date: 3/12/2017
Subject: Re: Minesto news

Group: AirborneWindEnergy Message: 22263 From: joe_f_90032 Date: 3/12/2017
Subject: Way to go! Thirty-nine seconds bicycle kite

Group: AirborneWindEnergy Message: 22264 From: dave santos Date: 3/12/2017
Subject: Re: Soft vs Rigid Wings

Group: AirborneWindEnergy Message: 22265 From: dave santos Date: 3/13/2017
Subject: Re: Crash Factor Theory

Group: AirborneWindEnergy Message: 22266 From: benhaiemp Date: 3/13/2017
Subject: Re: Crash Factor Theory

Group: AirborneWindEnergy Message: 22267 From: Pierre BENHAIEM Date: 3/13/2017
Subject: Re: Crash Factor Theory

Group: AirborneWindEnergy Message: 22268 From: dave santos Date: 3/13/2017
Subject: Re: Crash Factor Theory

Group: AirborneWindEnergy Message: 22269 From: benhaiemp Date: 3/13/2017
Subject: Airborne Wind Energy System Modelling, Control and Optimization (AWE

Group: AirborneWindEnergy Message: 22270 From: benhaiemp Date: 3/14/2017
Subject: What are the conditions for a high lifetime of the flexible material

Group: AirborneWindEnergy Message: 22271 From: gordon_sp Date: 3/14/2017
Subject: LTA Launch Assist

Group: AirborneWindEnergy Message: 22272 From: joe_f_90032 Date: 3/14/2017
Subject: Response to Zillman's "drone" push

Group: AirborneWindEnergy Message: 22273 From: joe_f_90032 Date: 3/14/2017
Subject: Re: http://twingtec.ch/ TwingTec

Group: AirborneWindEnergy Message: 22274 From: Joe Faust Date: 3/14/2017
Subject: Tether drag and tether negative lift ... When to bless them?

Group: AirborneWindEnergy Message: 22275 From: joe_f_90032 Date: 3/14/2017
Subject: Re: Tether drag and tether negative lift ... When to bless them?

Group: AirborneWindEnergy Message: 22276 From: joe_f_90032 Date: 3/15/2017
Subject: Re: Tether drag and tether negative lift ... When to bless them?

Group: AirborneWindEnergy Message: 22277 From: Joe Faust Date: 3/15/2017
Subject: Re: Tether drag and tether negative lift ... When to bless them?

Group: AirborneWindEnergy Message: 22279 From: joe_f_90032 Date: 3/15/2017
Subject: Re: Tether drag and tether negative lift ... When to bless them?

Group: AirborneWindEnergy Message: 22280 From: joe_f_90032 Date: 3/15/2017
Subject: Train at work

Group: AirborneWindEnergy Message: 22281 From: joe_f_90032 Date: 3/15/2017
Subject: Eagle Aerospace Technologies LLC

Group: AirborneWindEnergy Message: 22282 From: joe_f_90032 Date: 3/16/2017
Subject: SeaQurrent ®

Group: AirborneWindEnergy Message: 22283 From: Joe Faust Date: 3/16/2017
Subject: Whack the Wind

Group: AirborneWindEnergy Message: 22284 From: dave santos Date: 3/16/2017
Subject: Re: Whack the Wind

Group: AirborneWindEnergy Message: 22285 From: Joe Faust Date: 3/16/2017
Subject: AWE Success Paths Involve Errors

Group: AirborneWindEnergy Message: 22286 From: joe_f_90032 Date: 3/16/2017
Subject: Re: Response to Zillman's "drone" push

Group: AirborneWindEnergy Message: 22287 From: joe_f_90032 Date: 3/16/2017
Subject: Re: Response to Zillman's "drone" push

Group: AirborneWindEnergy Message: 22288 From: joe_f_90032 Date: 3/16/2017
Subject: Re: Response to Zillman's "drone" push

Group: AirborneWindEnergy Message: 22289 From: joe_f_90032 Date: 3/16/2017
Subject: Smooth writing IDTechEx has fresh offer

Group: AirborneWindEnergy Message: 22290 From: joe_f_90032 Date: 3/16/2017
Subject: Winners both

Group: AirborneWindEnergy Message: 22291 From: Joe Faust Date: 3/17/2017
Subject: Digital Morphing Wing

Group: AirborneWindEnergy Message: 22292 From: Joe Faust Date: 3/17/2017
Subject: Kite ship

Group: AirborneWindEnergy Message: 22293 From: joe_f_90032 Date: 3/17/2017
Subject: An AWE-focused conference announcement

Group: AirborneWindEnergy Message: 22294 From: Joe Faust Date: 3/18/2017
Subject: Fwd: Skypull newsletter #1/2017

Group: AirborneWindEnergy Message: 22295 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull

Group: AirborneWindEnergy Message: 22296 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull

Group: AirborneWindEnergy Message: 22297 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull

Group: AirborneWindEnergy Message: 22298 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull

Group: AirborneWindEnergy Message: 22299 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull

Group: AirborneWindEnergy Message: 22301 From: Joe Faust Date: 3/18/2017
Subject: What is a drone?

Group: AirborneWindEnergy Message: 22305 From: joe_f_90032 Date: 3/21/2017
Subject: Technical forum for AWEIA is ETZLER

Group: AirborneWindEnergy Message: 22306 From: joe_f_90032 Date: 3/22/2017
Subject: Open Forum

Group: AirborneWindEnergy Message: 22307 From: joe_f_90032 Date: 3/23/2017
Subject: Stiffening of an air beam

Group: AirborneWindEnergy Message: 22308 From: joe_f_90032 Date: 3/23/2017
Subject: Re: Stiffening of an air beam

Group: AirborneWindEnergy Message: 22309 From: joe_f_90032 Date: 3/23/2017
Subject: Re: Stiffening of an air beam

Group: AirborneWindEnergy Message: 22310 From: joe_f_90032 Date: 3/23/2017
Subject: Re: Stiffening of an air beam

Group: AirborneWindEnergy Message: 22311 From: dave santos Date: 3/23/2017
Subject: Re: Stiffening of an air beam

Group: AirborneWindEnergy Message: 22312 From: joe_f_90032 Date: 3/24/2017
Subject: Kited-drone Turbine Set Retrieval by Untethered Controlled Homing Gl

Group: AirborneWindEnergy Message: 22313 From: dave santos Date: 3/24/2017
Subject: Re: Kited-drone Turbine Set Retrieval by Untethered Controlled Homin

Group: AirborneWindEnergy Message: 22314 From: joe_f_90032 Date: 3/24/2017
Subject: "Blimp" is about to take a hit.




Group: AirborneWindEnergy Message: 22260 From: Pierre BENHAIEM Date: 3/12/2017
Subject: Re: Crash Factor Theory

Is there a scientific paper for this sort of theory? What sort of statistics are used? Where are reports and data?

 

 

 

Group: AirborneWindEnergy Message: 22261 From: joe_f_90032 Date: 3/12/2017
Subject: Re: Ping-pong balls
Group: AirborneWindEnergy Message: 22262 From: joe_f_90032 Date: 3/12/2017
Subject: Re: Minesto news
Minesto's  rep spoke at conference in 2017:


[some interesting comments]


Group: AirborneWindEnergy Message: 22263 From: joe_f_90032 Date: 3/12/2017
Subject: Way to go! Thirty-nine seconds bicycle kite

Way to go

https://www.youtube.com/watch?v=ViozBFPtEhM


and this was found from the synergy:

Taiwan kite designer makes unique bike kite

https://www.youtube.com/watch?v=ogcp-2j1FoQ


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

Thanks to Frank Colver, hang gliding pioneer, 

for tip for this link. Thanks, Frank. 


Group: AirborneWindEnergy Message: 22264 From: dave santos Date: 3/12/2017
Subject: Re: Soft vs Rigid Wings
These terms are correctly used by textile domain experts without confusion.








On Sunday, March 12, 2017 9:45 PM, "Pierre BENHAIEM pierre-benhaiem@orange.fr [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Too much confusion between riptstop and similarly-case of ripstop. And "Pierre thinks the pulled threads on a toy kite are evidence that it will not last, but a kite engineer instead redesigns the seam as needed. " is both a deliberate deception or thinking deformation and a mediocre belittlement as I never made such a think. Poor arguing as usual.
 
 
 
 


Group: AirborneWindEnergy Message: 22265 From: dave santos Date: 3/13/2017
Subject: Re: Crash Factor Theory

Pierre,

"Crash Factor Theory" is not really new engineering practice, but a new descriptive title for a broad set of interrelated technical and economic factors that inform engineering questions like "soft v hard" in AWE, whose crash statistics are of course in a very early stage. Crash analysis and statistics is a deeply studied subject in aerospace. Below is a sample list of typical references. This a good 2003 USAF UAV study, and the admirable Helios Crash Report reviewed before on the AWES Forum-



As you know, the AWES Forum leads crash analysis discussion in the AWE community, for almost ten years. Its not a topic that is fully developed yet, but there is no doubt of its importance. A key test of CFT prediction, as presented here, will be how Makani's M600 fares. With so many failure modes, and given the US Airforce crash statistics, as a similarity model, it does not look good for Makani. CFT also bears on whether predictions like yours regarding soft v hard wings will prove correct in real life,

daveS

---------------
  1.  Wiegmann, Douglas A (2003). "A Human Error Approach to Aviation Accident Analysis: The Human Factors Analysis and Classification System" (PDF)Ashgate Publishing Limited. Retrieved Oct 26, 2015.
  2. Jump up^ Li, Guohua (Feb 2001). "Factors associated with pilot error in aviation crashes" (PDF)Research Gate. Retrieved Oct 26, 2015.
  3. Jump up^ P.M, Salmon (2012). "Systems-based analysis methods: a comparison of AcciMap, HFACS, and STAMP". Safety Science.
  4. Jump up^ Underwood, Peter; Waterson, Patrick (2014-07-01). "Systems thinking, the Swiss Cheese Model and accident analysis: A comparative systemic analysis of the Grayrigg train derailment using the ATSB, AcciMap and STAMP models"Accident Analysis & Prevention. Systems thinking in workplace safety and health. 68: 75–94. doi:10.1016/j.aap.2013.07.027.
  5. Jump up^ Roelen, A. L. C.; Lin, P. H.; Hale, A. R. (2011-01-01). "Accident models and organisational factors in air transport: The need for multi-method models"Safety Science. The gift of failure: New approaches to analyzing and learning from events and near-misses – Honoring the contributions of Bernhard Wilpert. 49 (1): 5–10. doi:10.1016/j.ssci.2010.01.022.
  6. Jump up^ Qureshi, Zahid H (Jan 2008). "A Review of Accident Modelling Approaches for Complex Critical Sociotechnical Systems". Defense Science and Technology Organisation.
  7. Jump up^ Mearns, Kathryn J.; Flin, Rhona (March 1999). "Assessing the state of organizational safety—culture or climate?". Current Psychology18 (1): 5–17. doi:10.1007/s12144-999-1013-3.
  8. Jump up^ Nielsen, K.J.; Rasmussen, K.; Glasscock, D.; Spangenberg, S. (March 2008). "Changes in safety climate and accidents at two identical manufacturing plants". Safety Science46 (3): 440–449. doi:10.1016/j.ssci.2007.05.009.
  9. Jump up^ Reason, James (2000-03-18). "Human error: models and management"BMJ : British Medical Journal320 (7237): 768–770. doi:10.1136/bmj.320.7237.768ISSN 0959-8138PMC 1117770Freely accessiblePMID 10720363.
  10. Jump up^ "Aviation Accident Report AAR-10-01"www.ntsb.gov. Retrieved 2015-10-26.
  11. Jump up^ "A double tragedy: Colgan Air Flight 3407 – Air Facts Journal"Air Facts Journal. Retrieved 2015-10-26.
  12. Jump up^ Caldwell, John A. (2012-04-01). "Crew Schedules, Sleep Deprivation, and Aviation Performance"Current Directions in Psychological Science21 (2): 85–89. doi:10.1177/0963721411435842ISSN 0963-7214.
  13. Jump up^ Landrigan, L.C.; Wade, J.P.; Milewski, A.; Reagor, B. (2013-11-01). "Lessons from the past: Inaccurate credibility assessments made during crisis situations"2013 IEEE International Conference on Technologies for Homeland Security (HST): 754–759. doi:10.1109/THS.2013.6699098.
  14. Jump up^ Haddad, Ziad S.; Park, Kyung-Won (23 June 2010). "Vertical profiling of tropical precipitation using passive microwave observations and its implications regarding the crash of Air France 447". Journal of Geophysical Research115 (D12). doi:10.1029/2009JD013380.
  15. Jump up^ REASON, JAMES (August 1995). "A systems approach to organizational error". Ergonomics38 (8): 1708–1721. doi:10.1080/00140139508925221.


On Sunday, March 12, 2017 9:45 PM, "Pierre BENHAIEM pierre-benhaiem@orange.fr [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Is there a scientific paper for this sort of theory? What sort of statistics are used? Where are reports and data?
 
 
 


Group: AirborneWindEnergy Message: 22266 From: benhaiemp Date: 3/13/2017
Subject: Re: Crash Factor Theory
"Makani's current crash history, by leaked clues, seems to be at least one total crash per ~100hrs of logged AWES flight." Source?
Group: AirborneWindEnergy Message: 22267 From: Pierre BENHAIEM Date: 3/13/2017
Subject: Re: Crash Factor Theory

I agree that crash factor is a crucial concern for tethered rigid wings. Thanks for the links.

 

 

 

 

Group: AirborneWindEnergy Message: 22268 From: dave santos Date: 3/13/2017
Subject: Re: Crash Factor Theory
Pierre,

As you know I have followed Makani from the start, via the close KiteShip partnership, and hundreds of messages have provided the best public window into Makani. The sources are Makani itself, as covered on the AWES Forum over the years. A crash of an early flying wing was first deduced by a ex-staff engineer resume, and later supported by misc disclosures. The one hundred flight hour figure is from more recent public comments by Makani. To answer your questions to your satisfaction, Makani must be more to be transparent about its crash history. 

Study the references that document large UAV crashes are common in the R&D stage. Larry Page himself ordered Astro Teller to crash prototypes. If you are not satisfied with the quality of disclosed crash data, its the fault of the ventures. You may be misjudging hard wing survival rates simply because hard wing AWE stealth ventures do not report crashes. Crashes are part of the AWE R&D process, and the are clues that leak out in the expert circles may not convince non-experts who want to believe no crashes are occuring.

Once again, due patience will settle doubts about whether Makani has crashed, as long surmised, and whether the M600 is doomed. Thanks for carefully studying crash factors from the references provided, and doing as much crash research as you can on your own. Many of your questions are best directed to Makani itself, to properly evaluate AWES Forum speculation. You may not find them as helpful as Open-AWE,

daveS






On Monday, March 13, 2017 9:08 AM, "Pierre BENHAIEM pierre-benhaiem@orange.fr [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
I agree that crash factor is a crucial concern for tethered rigid wings. Thanks for the links.
 
 
 
 


Group: AirborneWindEnergy Message: 22269 From: benhaiemp Date: 3/13/2017
Subject: Airborne Wind Energy System Modelling, Control and Optimization (AWE

https://www.linkedin.com/pulse/european-training-network-awesco-launched-roland-schmehl


As general coordinator, Dr. Roland Schmehl makes a great job by stimulating some important searches in different fields.


Congratulations also for the next Airborne Wind Energy Conference University Freiburg 2017 http://awec2017.com/ and his organizing commitee with Prof. Dr. Moritz Diehl (chair).

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

Moderator note from the link:  ["Germany, to launch the doctoral training network AWESCO. http://www.awesco.eu/ The acronym stands for "Airborne Wind Energy System Modelling, Control and Optimisation" and it is the declared objective of this network to collaboratively solve the scientific and technical challenges of wind energy harvesting by means of tethered wings. The Marie-Skłodowska-Curie action is funded by the European Union within Horizon 2020  https://ec.europa.eu/programmes/horizon2020/ and by the Swiss Federal Government http://www.sbfi.admin.ch/index.html?lang=en  and has a total budget of €3.4 million."]



Group: AirborneWindEnergy Message: 22270 From: benhaiemp Date: 3/14/2017
Subject: What are the conditions for a high lifetime of the flexible material

Problems of high resistance and low lifetime with ripstop use, or high lifetime and low resistance with plastic film use are well known. Laminated complexes exist, above all in the industry of sails, but their lifetime can also be limited with the loss of cohesion with time.

Another consideration is the way of use. Example: some flexible material could have a higher lifetime when it covers a rigid structure. By the same is it possible to deduce a higher lifetime for flexible material used for hang glider? The return of experience of expert Joe Faust would be precious. The same for inflatable concepts like http://fly.woopyjump.com/ . The same for https://en.wikipedia.org/wiki/Tethered_Aerostat_Radar_System or reversing the question: supposing that the same flexible material is used for ram kites, would be their lifetime be the same or lower? My hypothesis is a higher lifetime when the flexible material is used within a permanent structure or/and on a support.

Your return of experience can be precious for AWE R&D. Thanks.

Group: AirborneWindEnergy Message: 22271 From: gordon_sp Date: 3/14/2017
Subject: LTA Launch Assist

LTA LAUNCH ASSIST

Since my original proposal of attaching balloons to the lifter kite to stiffen it and generate neutral buoyancy, it occurred to me that balloons can be jettisoned soon after takeoff.  In this way we can use a much smaller lifting device because it only has to lift the kite and not the turbines and cable drives.  The drag line will be anchored to the ground and when it becomes taut, the balloons will slide out from under the kite.  The balloons will be manually recovered and stowed away for the next launch.

The quantity of lifting gas is much less than I previously proposed.  For the 10 KW system I calculate that we need a 15 M2 kite.  If we assume that the weight of the kite with LTA balloons is 5 Kg, then the volume of lifting gas to supply 18 Kg of lift would be 15 M3 which would require 2 cylinders 1.4 M in diameter and 5 M long.  If the LTA gas used is hydrogen then the energy equivalent would be about 0.5 gallons of gasoline.  The hydrogen could be extracted from the balloons and stored for future use.  Even though the cost of the hydrogen is small it is considered and indirect greenhouse gas and recycling it would be environmentally sound.

Open-AWE_IP-Cloud

Gordon Spilkin 3/14/2017


  @@attachment@@
Group: AirborneWindEnergy Message: 22272 From: joe_f_90032 Date: 3/14/2017
Subject: Response to Zillman's "drone" push

When the tethered power-using power-on "drone" is operating as a power-off and power-producing winged turbine, then that phase is no longer a "drone" but a power-producing kite system. When the power-off diving return cycle is occurring, then the slack lining leads to a non-drone and non-kite phase into a diving-gliding glider phase. Using "drone" is appropriate for the costing tethered-helicopter-or-powered-aircraft start/launching phase, but misses the technical respect for the non-powered energy-kiting phase where the system is best appreciated as a turbined kite system. Trying to piggyback onto to the drone market rise to attract funds might win funds in the short haul; but the suppression of the core technology of kiting may hide chances to discover energy kite systems that scale better than rigid-wing systems using the pumping methods and using the costing return method.  Drone stage, kite phase, glider phase--- where the kite phase is the energy-producing stage does not technically win rights to "drone" global naming.  It is not fun to try to food Mother Nature by such term piggy-backing; when investors get wind of this process, they might shy away from the AWE kite phase realm which would be unfortunate. It is in the kite phase where the disruptive game will be played. 


Group: AirborneWindEnergy Message: 22273 From: joe_f_90032 Date: 3/14/2017
Subject: Re: http://twingtec.ch/ TwingTec

TwingTec lands a cover with art on a conventional wind magazine WindTec International: 


https://www.linkedin.com/pulse/windtech-cover-corey-houle


https://www.windtech-international.com/editorial-features/twingpower-high-altitude-wind-energy-system



=========== 

Comment:

The article by TwingTec in the conventional-wind magazine states "No tower or foundation is needed, "  which is, of course, not true. Rather, kite systems need foundations. Missing such technical basic is not uncommon. The cause of the missing is sought; is it the focus on the wing set above?  Is the missing from a desire to hide the fact of the need for a foundation to win the game over towered conventional wind?  Ignoring the huge role of kite-system foundation anchoring needs will have costs that will make the ignoring be highlighted. A kite is a collection of sets of parts; one set of parts that make "kite" is the foundation set or anchoring set or opposing-set.   Tension in the line set requires that there be a foundation. Want to have higher line tension in a generating system? Then have a foundation that can handle the line-set tension. Scale up will include scaling up the foundation of the energy-kite system. The foundation might be mobile, moving, or nearly absolutely static  (say Earth anchors).

   

So, will conventional wind come back and ridicule our young industry by pointing out the obvious fact that indeed energy-kite systems do need foundations?  May the AWE industry in its youth rather come out firmly that energy-kite systems do need foundations; but those foundations need not be tall rigid towers, but rather of other design. Some energy kite systems may employ Earth in ways that are cost effective compared to the building of tall rigid towers. 

   ~ JoeF






Group: AirborneWindEnergy Message: 22274 From: Joe Faust Date: 3/14/2017
Subject: Tether drag and tether negative lift ... When to bless them?
Tether drag contributes to tether tension. Employ tether tension to generate electricity at the foundations of kite 
and win.  And then go back and give some thanks to tether drag. 

A kite's tether set may be considered as a wing set itself with drag and negative lift which form a tether resultant. Keep the tether aloft with lifting wing set and obtain the final tether-set pulling with its force and direction.    

One does not always need to decry tether drag or tether negative lift in AWES.   

E.g., have a kite system with wing-set's near-wing tethers with an attitude of 60 degrees above the horizontal, but notice with long tether the approximate catenary line forms positional inclinations that reduce away form 60 degrees, say down to even zero; let that zero-inclination line set pull a water hull filled with hydroelectric generators.  The pull of the line set is larger than if the line was short coupled to the wing set. The electricity generated may be larger with the long line and the zero-degree inclination of the line to the hull.   Thank the drag and negative lift of the long line.
================= up for analysis and discussion..... 


Group: AirborneWindEnergy Message: 22275 From: joe_f_90032 Date: 3/14/2017
Subject: Re: Tether drag and tether negative lift ... When to bless them?
Key realm almost neglected on topic: 

DaveS  noted:
"Positive Lift from a windward-leaning tether braced by thinner leeward-leaning tether can in principle almost fly as a kite (as near-100% "tether" case). Lattices can have many windward-leaning tethers braced downwind from a line of normal tethers."

Yes:      /        \    This may receive pointed discussions and development. Full potential of downward tethers has yet to occur. Former tag lines, control lines, safety lines, energy-transfer lines, and more that seat windward have positive lift and drag.  There has been brief mentions of windward tethers and the like in shading, billowing, and tailing also. 

 
Group: AirborneWindEnergy Message: 22276 From: joe_f_90032 Date: 3/15/2017
Subject: Re: Tether drag and tether negative lift ... When to bless them?
http://www.energykitesystems.net/WindwardTethers/wwt002.jpg

  ~~~ Windward tethers and hangs ~~~

Have initial kite system as foundation for windward tethers and hangs doing good works.   

~   KitesForGood.com 

Group: AirborneWindEnergy Message: 22277 From: Joe Faust Date: 3/15/2017
Subject: Re: Tether drag and tether negative lift ... When to bless them?
Group: AirborneWindEnergy Message: 22279 From: joe_f_90032 Date: 3/15/2017
Subject: Re: Tether drag and tether negative lift ... When to bless them?
Shape wall as needed. Have the wall from sparse net to full sheet as wanted for purpose.  Applique wall as wanted. Form aft edge to be straight or curved or otherwise textured; have aft-edge lifting-dragging wing as needed with variable shape and variable size when wanted. Have controls as wanted; controls may be LE placed, mid-wall placed, or aft-edge placed; controls may be passive or robotic reactive or RC or manual; controls may be smart, scheduled, reactive to logics, etc.  Wall may be tiny panel or huge. Many electric AWES scheme may be developed surrounding lifted windward walls. Many other purposes may arrive from judicious design and control of windward walls supported by kite systems. The complex result globally is still just a kite, though perhaps a kite whose parts are complex. 
Group: AirborneWindEnergy Message: 22280 From: joe_f_90032 Date: 3/15/2017
Subject: Train at work
Group: AirborneWindEnergy Message: 22281 From: joe_f_90032 Date: 3/15/2017
Subject: Eagle Aerospace Technologies LLC

Eagle Aerospace Technologies LLC

Enzo San Martin

Chile

Universidad Tecnica Federico Santa Maria


Page with a video featured: 

https://angel.co/eagle-aerospace-technologies

(nine months ago)

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


Comment: 

We seek report from Enzo. 



Group: AirborneWindEnergy Message: 22282 From: joe_f_90032 Date: 3/16/2017
Subject: SeaQurrent ®

SeaQurrent ®

[[water kite system, paravane AWES]]


Netherlands


Article01   March 14, 2017

and

Home site: 

http://seaqurrent.com/

and

Youri Wentzel     

and

http://seaqurrent.com/stroom-met-watervlieger/


"The next generation tidal energy plants based on the principle of kiting."

and

"The development team is supported by specialized contractors, companies, and knowledge institutes including Technologie Centrum Noord Nederland (TCNN) and the University of Groningen (RUG). The Province of Fryslân also supports the development and has provided a first grant for the project."


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

Note: In text surrounding the company, there is some found use of "SeaCurrent" whereas the registered trademark has the big Q and not the C. 


There is mention of "multiwing" in the text. 

Tag: paravane , water vlieger , 

Group: AirborneWindEnergy Message: 22283 From: Joe Faust Date: 3/16/2017
Subject: Whack the Wind

BOURCART
1866

==================  whack the wind and see what one gets or where one gets ... 

Group: AirborneWindEnergy Message: 22284 From: dave santos Date: 3/16/2017
Subject: Re: Whack the Wind
This would be a fun wing-set in low-G and zero-G space habitats. Bourcart's mistake is to underestimate human-powered aircraft power-to-weight capability.

It may be that optimal graphene-built human-powered ornithopter could eventually make this a marginal 1G system. There is also the option of kiting in a breeze to make this workable.


On Thursday, March 16, 2017 10:01 AM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  

BOURCART
1866

==================  whack the wind and see what one gets or where one gets ... 



Group: AirborneWindEnergy Message: 22285 From: Joe Faust Date: 3/16/2017
Subject: AWE Success Paths Involve Errors
AWE Success Paths Involve Errors. 
The next success version will still have errors in it!  And the next errors are likely to cost us. 

"Oh Happy Fault! Thou has been found and appreciated; and now deleted from our next version! 
You, Fault, taught us many things; facing You brought better to the fore. 
Had You been missed, Oh No!" 

The success is heightened when the errors are understood and avoided. 
Please report the details of all incidents that may affect the safety of energy-kite systems. 
And since research conversational efforts commonly include errors of various degrees of importance,
then please help correct substantial found errors in our conversational statements; in such manner the record will gradually supply good slate matter for the AWE community. 
Solid proofs are not always easy to make. 

A kite engineer or technician or AWE student posting in the AirborneWindEnergy forum will post errors; some of the errors will be minor; some errors may be major. Proving corrections of major errors may not always be easy.  Speculation may point to what is true or not true; have fun developing solid proofs for involved speculative statements; poor proofs might just be a continuation of speculation and thus might really be non-proofs masquerading as proofs.  In all cases in the present forum, no one has divine insight over the souls of our hard-working posters, and thus cannot know that an error was a deliberate deception or not; any poster who admits of deliberate deception in forwarding an error would be put on strict moderation or banned.  Any poster who pretends to have divine vision over the souls of others in the AWE community and states that deliberate deception has certainly occurred without the admission of the deceiver will be put on moderation; the reputation of people is a higher matter than the AWE detail; hopefully may posts stick to technical RAD matters and correction of RAD technical steps.    Have fun in the RAD. Work in private email or phone on personal matters; thank you. 
===================

I did not buy the ebook, but the preview pages give hint to some topics that could apply the development of large AWES as regards human errors by technicians, designers, engineers, helpers, supplier, operators, etc. 
The Blame Machine: Why Human Error Causes Accidents
By Robert Whittingham
---------------------------------------------------------------------------

Maybe some mulling over the discussions here could favor our best progress: 
===============================================================================
Exploring engineering errors might sharpen the AWE community:     Much to explore in: 
====================================================

Suggestion:  Stay happy when teased to work carefully to correct an error via solid proofs.

====================================================
Good aviation has been built upon mountains of non-deliberate errors. 
====================================================
The following article probably has something for the young AWES industry community members: 
====================================================

Show me an Engineer without error and I will be seing God Almighty.

====================================================
The study of effort, error, and success could be extensive. Yet sharpening one's wits on the topic could enhance RAD. 
A primer for the journey might include a look at Rene Descartes and other philosophers touching upon thinking, judgment, will, action, language, ...
=====================================================

INDIVIDUALS.html   Does your AWE team have everyone listed?   Each on the list have made errors on their path to successful AWE participation. 

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




Group: AirborneWindEnergy Message: 22286 From: joe_f_90032 Date: 3/16/2017
Subject: Re: Response to Zillman's "drone" push

"Airborne Wind Energy is a radical new concept to produce wind energy with flying Wind Drones® instead of wind turbines."

    There is something, I sense, very off about the slogan; it is as though the capital agent misses the core raw meaning of Airborne Wind Energy which is based not on free-flying drones but on wind turbines! that are converting wind to energy much by the kiting principle, not the free-flying drone principle.  It is as though someone is jumping in trying to get the glitter of drones while misdirecting the AWE technology.   My feelings, so far, is sad and puzzled.   The drone industry is doing just fine. The new guy actual AWE does not need for a capital guy to misdirect things.      Others will have a take on this matter.  Listen to Udo Zillman in 2015, if you wish: 

https://collegerama.tudelft.nl/Mediasite/Play/aca3c3f29eb54dc3b6ca4cde1a68084c1d

He explains at about 10:00 his rationale for the term "wind drone" instead of energy-kite system or the like.    





Group: AirborneWindEnergy Message: 22287 From: joe_f_90032 Date: 3/16/2017
Subject: Re: Response to Zillman's "drone" push

Available right now to anyone from your favorite domain registrar: 

energykitedrones.com

kiteenergydrones.com


Taken is 

http://www.WindDrones.com

and not by an AWE company, thankfully.  


Group: AirborneWindEnergy Message: 22288 From: joe_f_90032 Date: 3/16/2017
Subject: Re: Response to Zillman's "drone" push

Daidalos invested in Ampyx and  Enerkite    

Those downselects won't compete well with coming soft-huge methods in the utility market at large scale, my estimate. .


Zillman seems to miss that tether drag can have some strong merits in energy-kite systems. 


But he seems ready to invest in the small team that has a great concept/potential for the future downselects. I wonder if he is looking into China AWE. 


======================== And aside:

http://www.WindDrones.com does not lead to AWE. 

(unless one day Daidalos buys that domain from the drone user; that could happen).



Group: AirborneWindEnergy Message: 22289 From: joe_f_90032 Date: 3/16/2017
Subject: Smooth writing IDTechEx has fresh offer

Disclaimer:  I have not seen the report(s) and thus cannot discuss from such a viewpoint. This note is simply a raw announcement:

http://www.idtechex.com/research/reports/airborne-wind-energy-awe-2017-2027-000523.asp


Reading just the sales matter might spawn some discussions in forum. 

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





Group: AirborneWindEnergy Message: 22290 From: joe_f_90032 Date: 3/16/2017
Subject: Winners both

High school juniors win with AWE

Falmouth Academy Science Fair Winners


Charlie Fenske   

Theo Guerin    



=====

http://www.falmouthacademy.org/


Group: AirborneWindEnergy Message: 22291 From: Joe Faust Date: 3/17/2017
Subject: Digital Morphing Wing
Active Wing Shaping Concept Using Composite
Lattice-Based Cellular Structures
Benjamin Jenett, Sam Calisch, Daniel Cellucci, Nick Cramer, Neil Gershenfeld,
Sean Swei, and Kenneth C. Cheung
Group: AirborneWindEnergy Message: 22292 From: Joe Faust Date: 3/17/2017
Subject: Kite ship
Kite ship
Publication numberCN101327840 A
Publication typeApplication
Application numberCN 200810068289
Publication dateDec 24, 2008
Filing dateJul 4, 2008
Priority dateJul 4, 2008
Also published asUS8402905US20110162569WO2010000100A1
Inventors冯光根
Applicant冯光根
Export CitationBiBTeXEndNoteRefMan
External Links: SIPOEspacenet
Group: AirborneWindEnergy Message: 22293 From: joe_f_90032 Date: 3/17/2017
Subject: An AWE-focused conference announcement

Group: AirborneWindEnergy Message: 22294 From: Joe Faust Date: 3/18/2017
Subject: Fwd: Skypull newsletter #1/2017

​This is being posted at AirborneWindEnergy forum:​

Skypull Newsletter 1/2017
View this email in your browser

It's time to catch up

Dear friends, 

Please apologise for not being in touch for while.
It is indeed time to catch up so let us bring you up to speed with the latest developments at Skypull.
We would like to offer you an overview of what has been accomplished so far and what we intend to do in the near future.

Accomplishments

Since the last newsletter at the end of 2016 we moved ahead quite a bit on several fronts. Let us list the milestones we are most proud of.

We were able to take on board a few key persons that will be instrumental for the current and upcoming development phases. We are working with leading specialists in the field of prototyping, computational analysis, ground generator development, SW development, flight modelling, flight testing, etc. The Skypull team is growing!

The technical development focus is currently threefold: new prototype, control software, ground generator. The activities are moving ahead at full steam as we intend to deploy the system in a pilot test very soon.



We had quite an intensive but truly constructive interaction with the Federal Office of Civil Aviation about the ConOps (concept of operations) and the risk assessment of Skypull. A few days ago, the FOCA gave us the flight approval in "beyond visual line of sight" condition for our prototypes. This opens the door to our planned flight test campaign this Spring.

The Federal Office of Energy has accepted our pilot+demonstration proposal and will be supporting some of our prototype developments in the near future.

We had several occasions to pitch Skypull and confront (i.e. reinforce) our business idea in various contexts. It is always a challenge and requires a lot of effort but you never stop learning and growing. A few other appointments are already lined up in the coming weeks.


Awards

The efforts of the past months have also brought some results in terms of recognition. Here are the awards we collected in the past months:


IMD Startup Competition
(we are among the 11 startups that are going to Silicon Valley with the IMD EMBA cohort)


Venture Kick
Stage 1 winner (Stage 2 is planned for June 7)


CTI Coaching Program
(admitted to Phase 3)


De Vigier
award finalist (final will take place on March 30)


Next steps

The most important next step is the full system test campaign where will operate Skypull in its entirety and generate electricity. Together with our strategic partner AEM SA, we intend to demonstrate that the concept works. 
We will keep you posted and provide more details as we get closer to it.


Last but not least, we would like to invite you to the upcoming event "Silicon Valley meets Switzerland" that will take place in Lugano on March 31. Our CEO will be on stage together with other promising drone startups and discuss the commercial use of unmanned aerial vehicles.
We have some free tickets for you. Please contact us if you would like one.

Follow us on Facebook and stay informed about the latest news!





Copyright © 2017 Skypull, All rights reserved.
You are receiving this email because we consider you our friend and partner in our venture.

Our mailing address is:
Skypull
Via Maderno 24
Lugano 6900
Switzerland

Add us to your address book


Want to change how you receive these emails?
You can update your preferences or unsubscribe from this list

Email Marketing Powered by MailChimp

Group: AirborneWindEnergy Message: 22295 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull
Please join for this topic thread the newsletter posted at

Discuss Skypull by replies to topic title "Skypull" 
if such seems fitting to you. 

Group: AirborneWindEnergy Message: 22296 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull
It seems that the text of Skypull is willing stick with "drone" rather than kited drone.  That is, searching in their text for energy kite might not come up with much. One of the challenges in this technically is that tether and foundation matters may be given short service. Another is that technical interfaces may miss the same tether set and kite-foundation set.    The hybrid kite system will show up in searches for "drone" and will get looked at; this seems smart marketing; but smarter might be to include both kite terms and drone terms in order to reach fuller market.   


Group: AirborneWindEnergy Message: 22297 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull
The first newsletter of Skypull
has a photo that does not even show a tether; such is full-on avoidance of a core part that allow energy to be produced. 




Group: AirborneWindEnergy Message: 22298 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull
On balance: 

rolling the tether on ground generator 16 3 17 of skypull

listed on channel: 

Group: AirborneWindEnergy Message: 22299 From: joe_f_90032 Date: 3/18/2017
Subject: Re: Skypull

Notice how the "drone" phases make no energy but only costs energy, 
while the kite phase is where the energy is made. 
Notice how many graphics in the video do not even show the tether; 
but the tethering is core matter that enables the pulling of the spool that enables the groundgen to make electricity.  I hope that the public does not get confused by the skirting of the kite core matters of the system. The technical team might get in a habit of missing progressive kite matters by suppressing what makes the energy: the kiting.  The launch tethered kited drone phase seems to be fully important for the Skypull system, but that is a costing phase when motors are positively powered by energy from the ground.   If the wing is with tensed line during the return non-production phase, then that return phase is a kite phase and not a drone phase.  
~ JoeF

Group: AirborneWindEnergy Message: 22301 From: Joe Faust Date: 3/18/2017
Subject: What is a drone?
What is a drone? 
It seems that the word is going through some changes of meaning as time marches forward. Military drones (Civil War, etc.), "angels of death", etc., recreational drones, commercial-service drones, scientific drones, etc.  What is a drone and what is not a drone?   Is a kite a drone; are some kites not drones; are some kites drones?  Does the AWE industrial community want to be serving up energy drones, kite drones, energy-kite drones, wind drones, etc.? Or what? Will energy kite systems serve?  Is Zillman has his way, will energy kites get lost in a sea of drones or rise sooner higher in the attention of the energy world?  Time will tell eventually. For now in this topic thread, some exploration on what the world is saying a drone is.  Applications for drones are multiplying fast both for military and peaceful society.   

What is a drone?   

I'll collect some answers from people struggling with the question: 
  • Site 1 : "A drone, in a technological context, is an unmanned aircraft. Drones are more formally known as unmanned aerial vehicles (UAVs) or unmanned aircraft systems (UASes). Essentially, a drone is a flying robot. The aircrafts may be remotely controlled or can fly autonomously through software-controlled flight plans in their embedded systems working in conjunction with onboard sensors and GPS."

  • Site 2 : "To the military, they are UAVs (Unmanned Aerial Vehicles) or RPAS (Remotely Piloted Aerial Systems). However, they are more commonly known as drones."

  • Site 3 : "Technically speaking, space-borne drones could include cargo spacecraft, satellites and machines that leave Earth, although they aren't usually referred to as such. Perhaps the best example of a drone in space is the U.S. military's mysterious X-37B spacecraft, which has made multiple flights into orbit for hundreds of days. Its mission is highly classified, leading to speculation about what it is doing."

  • Site 4 : Extensive text; though it aimed at defining, it seems not to do so except by extensive exampling. Worth reading; get the definition by yourself, though from the coverage, I guess.  "What Is A Drone – UAV Technology". 

  • Site 5 :  "For all practical purposes, there is no difference between the terms UAS, sUAS, UAV, and drone."

  • Site 6 :  https://en.wikipedia.org/wiki/Drone   Disambiguation page. Explore "drone" in various realms. 

  • Site 7 :    "Drone on a leash"  "It’s a quadcopter on a retractible dog leash."  [sic, retractable]

  • Site 8 : Target store has a page titled "drone kite"  (not a kite among the shown samples).   Definition by shown examples?

  • Site 9 : Best Reviews defines by examples also. See.  "Best Drones"

  • Site 10 :  Mother Jones explains drones.

  • Site 11 : "In the last few years, the word drone is becoming synonymous with two things, a death dealing machine flying high above Afghanistan and hobbyist quadcopters that are popping up everywhere like the Parrot AR ..."  and "Trying to distinguish between drones and UAVs is a little tricky. Mostly because the term “drone” is more of a media buzzword rather than a clearly defined machine like a UAV. Due to the increasing popularity of drones for domestic and hobby use though, the government has decided to put some effort into defining exactly what makes up a drone so that regulations can be put in place."

  • Site 12 : "What exactly is an underwater drone? China just seized a US Navy drone, escalating tensions"  And: "It’s basically a miniature submarine without any people inside. Because it’s much harder to send radio signals through water than air, these drones are typically not operated by remote control. They are completely autonomous, navigating with onboard computers and sensors."

  • Site 13 : The Center for the Study of the Drone (CSD) at Bard College:  " In the early history of unmanned aviation, the distinction between a drone and guided missile was not always well defined."    "The Drone Primer: A Compendium Of The Key Issues" gives "It is impossible to define the drone on the basis of its technical features alone."

  • Site 14 : "The truth, however, is that while “quadcopter” and “drone” are both accurate words to use to describe recreational umanned flying craft, their definitions differ slightly. Knowing exactly what a drone is and exactly what a quadcopter is can help you to avoid misunderstandings and locate the right recreational drone for your own uses."

  • Site 15 :  At www.dronedefintion.com  we see: "Simply put, a drone, is an unmanned aircraft or flying robot. Drones are also referred to as unmanned aerial vehicles, or UAV for short."

  • Etc. ... Etc.
and it goes on and on. 

Editorial:
I recommend full reading of the The Drone Primer: A Compendium Of The Key Issues
My first take for AWE: Distinguish energy-kite systems by staying as energy kites even though the systems are or will become drones in a generic capture. Don't let AWES energy kites get lost in the huge fearful and interesting drone world. The broad stroke literature flow has not the kite in the drone ocean; I'd keep it that way and have energy kites with its special realm.   But time will have its history on these matters. What say you? 
Group: AirborneWindEnergy Message: 22305 From: joe_f_90032 Date: 3/21/2017
Subject: Technical forum for AWEIA is ETZLER

AWEIA members may post technical reviewed-and-moderated
notes to 
ETZLER ™   Send to  Etzler@aweia.org    
This follows 
AirborneWindEnergy group forum's searchable 22,300 messages.


Group: AirborneWindEnergy Message: 22306 From: joe_f_90032 Date: 3/22/2017
Subject: Open Forum

  • The forum has be reopened.
  • Trusting a new era, all members are unmoderated. 
  • Online each member may set how they receive posted messages. 
  • Please delete tails in respect of people's time/attention.
  • Carefully compose posts to build the kind of AWE community you wish. 
  • Please search for topics; use those topic threads effectively for your new post, if possible. 
  • Form new topics when needed; this will make search, study, and conversation better. 
  • Stay focused on the technology, not adjectives over persons. 
  • Those banned are now unmoderated and permitted. Fresh start. New leaves. Blossom well. 
  • Build some AWEsome conversations. Let your best light shine. 
  • Listen carefully to others. Try to see their perspective on matters. The interior dictionaries of persons are not identical. Patiently get to know your brother and sister in this great AWE adventure. 
  • The wisdom of those retired is invited into the midst of the struggle to know. 
  • Consider composing locally. Polish the post as you have time. Save a copy. Then share to the world. 
  • AWE is worth your best.
  • This forum is for those who aim to advance AWE.

Group: AirborneWindEnergy Message: 22307 From: joe_f_90032 Date: 3/23/2017
Subject: Stiffening of an air beam

https://www.google.com/patents/US8640386

Stiffening of an air beam

Saul Griffith

Peter S. Lynn

Publication numberUS8640386 B1
Publication typeGrant
Application numberUS 13/662,305
Publication dateFeb 4, 2014
Filing dateOct 26, 2012
Priority dateOct 28, 2011
InventorsSaul GriffithPeter S. Lynn
Original AssigneeOther Lab, Llc
Export CitationBiBTeXEndNoteRefMan
External Links: USPTOUSPTO AssignmentEspacenet

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

Cited by examiner or applicant: 

Cited PatentFiling datePublication dateApplicantTitle
US2936056 *Sep 30, 1957May 10, 1960Garrett CorpVariable length inflatable escape chute
US5311706 *Jul 19, 1991May 17, 1994Tracor Aerospace, Inc.Inflatable truss frame
US5579609 *Jun 10, 1994Dec 3, 1996Tracor, Inc.Rigidizable inflatable structure
US6108980 *Feb 11, 1998Aug 29, 2000Braun; DieterBuilding element
US6463699 *Mar 23, 2001Oct 15, 2002Obi CorporationAir beam construction using differential pressure chambers
US8191819 *Jun 24, 2004Jun 5, 2012Prospective Concepts AgFloating bearing structure with static buoyancy
US20020157322 *Feb 19, 2001Oct 31, 2002Mauro PedrettiPneumatic structural element
US20060260209 *Mar 2, 2004Nov 23, 2006Mauro PedrettiFlexible compression member for a flexible pneumatic structural element and means for erecting pneumatic element structures
US20080295417 *Jun 2, 2008Dec 4, 2008Jean-Marc Daniel TurcotInflatable beam truss and structure
US20090019784 *Jul 20, 2007Jan 22, 2009Tinker Michael LFoam Rigidized Inflatable Structural Assemblies
US20100163683 *Feb 21, 2008Jul 1, 2010Brendan Mark QuineSpace Elevator
US20110209416 *Jan 26, 2011Sep 1, 2011Mauro PedrettiPneumatic node for compression elements


Group: AirborneWindEnergy Message: 22308 From: joe_f_90032 Date: 3/23/2017
Subject: Re: Stiffening of an air beam
Saul and Peter decided to call their realm "air-air-ity". That seems to play against the ongoing Tensairty realm. 

My first blush is that the game of alternatives should be applied to prior air where tensairty compression members have the alternative of being rods, bars, air beams, tubes, etc.   Hence, the prior art would cover the air-air-ity. Taping inflated splints to arms and legs or air beams seem obvious to those practicing medicine and other arts. Water-inflated beams/cases have been studied to stiffen core air beams; such was prior to the Griffith-Lynn patent application.    So far, I am not reading novelty in the subject patent. Anyone?   Saul?   Peter?
    
~ JoeF
Group: AirborneWindEnergy Message: 22309 From: joe_f_90032 Date: 3/23/2017
Subject: Re: Stiffening of an air beam
"to prior air" [sic, to prior art].   Thank you for the correction. 
===============================================

Clipping the references to the linked article at the end of the prior post: 

References
[1] Luchsinger R.H., Crettol R., Steingruber P., Pedretti A. & Pedretti M., ‘Going strong: From inflatable structures to Tensairity’, in Textile Composites and Inflatable Structures II, E. Onate & B. Kröplin (eds), CIMNE, Barcelona, pp. 414- 420, 2005.

[2] Luchsinger R.H., Pedretti M. & Reinhard A., ‘Pressure induced stability: from pneumatic structures to Tensairity’, Journal of Bionics Engineering, 1, 141-148, 2004.

[3] Luchsinger R.H., Pedretti A., Steingruber P. and Pedretti M., “Light weight structures with Tensairity“, R. Motro (ed.) Shell and Spacial Structures from Models to Realization; Editions de l’Espérou, Montpellier, 2004.

[4] Luchsinger R.H., Pedrett, A., Steingruber P. and Pedretti M., The new structural concept Tensairity: Basic Principles, in Progress in Structural Engineering, Mechanics and Computation, ed A. Zingoni, A.A. Balkema Publishers, London, pp. 323-328, 2004.

[5] Plagianakos T. S., Teutsch U., Crettol R., Luchsinger R. H., Static response of a
spindle-shaped tensairity column to axial compression, in Engineering Structures, Volume 31, Issue 8, pp. 1822-1831, 2008.
[6] Pronk A.D.C., de Haas T., Cox M., Heat-Transmitting Membrane, in International conference on Textile Composites and Inflatable Structures, Barcelona, 2007.

[7] Rodrigues and Coutinho, Master of Science Thesis Evaluation of the Sound Insulation of Liquid-Filled Panels, International conference paper for Internoise, Shanghai, China,
2008

[8] Thomas, J.C., Wielgosz, C., Deflections of highly inflated fabric tubes, in Thin-Walled Structures 7 July, 2004

[9] Wielgosz C., Thomas J.C., Casari P., Strength of inflatable fabric beams at high pressure, 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials, Denver, 22-25 April 2002,.

[10] Wielgosz C., Thomas JC, Deflections of inflatable fabric panels at high pressure, in Thin-walled structures, June 2002

Group: AirborneWindEnergy Message: 22310 From: joe_f_90032 Date: 3/23/2017
Subject: Re: Stiffening of an air beam
They used two spellings of their new chosen term:  air-air-ity     and air-airity
======================================


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


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


Group: AirborneWindEnergy Message: 22311 From: dave santos Date: 3/23/2017
Subject: Re: Stiffening of an air beam
Here we see Makani laying out an IP work-around to [Rolf et al] Tensairity design. The main vulnerability of structural inflatables is maintaining working pressure. A puncture or compressor failure can cause major failure.

The Open-AWE method is ram-air beams. The Morse Sled design brilliantly eliminates inflation-failure risk While ram-air cells appear less stiff as beams than static pressurized airbeams, the stiffen progressively with velocity to high pressure, without added air compressor. Inflated tube "ears" on a Morse sled kite is a common prior-case of fractal "arity".

kPower has identified arch-kite and dome-kite structure as magascalable tensairity. Earth itself acts as a spar-media, along with airpressure. The current conceptual frontier is metamaterial cellular-kite arrays on generalized tensairity principles.


On Thursday, March 23, 2017 9:04 AM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
They used two spellings of their new chosen term:  air-air-ity     and air-airity
======================================


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


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




Group: AirborneWindEnergy Message: 22312 From: joe_f_90032 Date: 3/24/2017
Subject: Kited-drone Turbine Set Retrieval by Untethered Controlled Homing Gl

Kited-drone Turbine Set Retrieval by Untethered Controlled Homing Glides:


When wanted, separate (by pilot or robotic pilot) the kite-system-lofted turbines into untethered controlled glides for a return to base station. Have the lifted  turbines generate by flygen or groundgen. The mother lifting kite system may remain aloft or brought down by various known means; one means could be wing separation from tether set for mother wings to glide home; another means is to morph mother wings and reel in the tethers. Fully separate tethers could have small retrieval wings while the tethers are brought home rapidly. These may apply for systems of one wing or systems of many wings in trains, stacks, clusters, trees, walls, fences, or other aggregate formats.  


~ kPower, Inc , Coop IP Pool   ~JoeF


Group: AirborneWindEnergy Message: 22313 From: dave santos Date: 3/24/2017
Subject: Re: Kited-drone Turbine Set Retrieval by Untethered Controlled Homin
This concept integrates two earlier kitefarm operations concepts explored on the Forum. One concept was that kitefarm arrays can launch in cascaded stages, starting with lift stages, with WECS hoisted to match conditions. Another concept was that arrays could be assembled or disassembled in the sky, with units flying back and forth from local airports. We also envisioned entire arrays as potentially capable of flying XC en-masse, as a means of global delivery, with aerotow propulsion.

JoeF presents a more complete kitefarm operations picture here, with an emphasis on untethered flight modes. Its fully plausible that flocks of muticopters can attend to the launching of large soft-kite structures. Details of docking/undocking or grappling/releasing kite elements are large open design studies.

Its also been proposed here that single-kite-unit AWES can be launched by a tetheres aid like mini-aerostat, tow-lunch pilot-kite; but also free-flying drones; and now we see quadcopter as a well-established tool. A nice current experimental window is use standard quadcopters to facilitate launch, just as KiteLab a decade ago demoed toy-kites and party-balloons to catalyze cascaded launch of larger kites.

Open-AWE_IP-Cloud = Cool-IP, etc

(kPower is a trustee/advocate of AWE CC variants, with AWEIA eventually intended as the final arbiter between creators-rights and global-stakeholder-rights)


On Friday, March 24, 2017 8:53 AM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Kited-drone Turbine Set Retrieval by Untethered Controlled Homing Glides:

When wanted, separate (by pilot or robotic pilot) the kite-system-lofted turbines into untethered controlled glides for a return to base station. Have the lifted  turbines generate by flygen or groundgen. The mother lifting kite system may remain aloft or brought down by various known means; one means could be wing separation from tether set for mother wings to glide home; another means is to morph mother wings and reel in the tethers. Fully separate tethers could have small retrieval wings while the tethers are brought home rapidly. These may apply for systems of one wing or systems of many wings in trains, stacks, clusters, trees, walls, fences, or other aggregate formats.  

~ kPower, Inc , Coop IP Pool   ~JoeF



Group: AirborneWindEnergy Message: 22314 From: joe_f_90032 Date: 3/24/2017
Subject: "Blimp" is about to take a hit.

"Blimp"  is about to take a hit. 

Goodyear's retiring of its final blimp this month while keeping interest in semi-rigid dirigibles; Goodyear will be letting the longer term "semi-rigid dirigible" be masked by letting "blimp" feed some of the public mind in regard to the longer phrase "semi-rigid dirigible". 


AWES may tether blimps or semi-rigid dirigibles. Kytooning lives on!  Kytoon AWES are in service for surveillance and science. Many AWES workers have filed patents involved kytoon. 


http://www.goodyearblimp.com/news-and-events/news.html

https://en.wikipedia.org/wiki/Blimp

https://en.wikipedia.org/wiki/Semi-rigid_airship

https://en.wikipedia.org/wiki/Airship

https://en.wikipedia.org/wiki/Goodyear_Blimp

https://en.wikipedia.org/wiki/Barrage_balloon


http://www.energykitesystems.net/AWEIA/ETZLER/KYTOONS/NormandyBarrageBaloonsKited30percent.jpg