Messages in AirborneWindEnergy group.                          AWES 22106 to 22159 Page 335 of 440.
Group: AirborneWindEnergy Message: 22106 From: benhaiemp Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings

Group: AirborneWindEnergy Message: 22107 From: benhaiemp Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings

Group: AirborneWindEnergy Message: 22108 From: Joe Faust Date: 3/2/2017
Subject: George J. Varney

Group: AirborneWindEnergy Message: 22110 From: joe_f_90032 Date: 3/2/2017
Subject: Re: George J. Varney

Group: AirborneWindEnergy Message: 22111 From: joe_f_90032 Date: 3/2/2017
Subject: Dreaming AWES

Group: AirborneWindEnergy Message: 22112 From: dave santos Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings

Group: AirborneWindEnergy Message: 22113 From: joe_f_90032 Date: 3/2/2017
Subject: Re: George J. Varney

Group: AirborneWindEnergy Message: 22114 From: joe_f_90032 Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings

Group: AirborneWindEnergy Message: 22115 From: dave santos Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings

Group: AirborneWindEnergy Message: 22116 From: dave santos Date: 3/2/2017
Subject: AWEIA recommended helium-ban in AWE?

Group: AirborneWindEnergy Message: 22117 From: joe_f_90032 Date: 3/2/2017
Subject: Re: George J. Varney

Group: AirborneWindEnergy Message: 22118 From: dave santos Date: 3/2/2017
Subject: COTS Mega-Clutches to convert Power Plants to AWE Hybrids

Group: AirborneWindEnergy Message: 22119 From: dave santos Date: 3/2/2017
Subject: Re: George J. Varney

Group: AirborneWindEnergy Message: 22120 From: dave santos Date: 3/2/2017
Subject: Re: COTS Mega-Clutches to convert Power Plants to AWE Hybrids

Group: AirborneWindEnergy Message: 22122 From: dave santos Date: 3/3/2017
Subject: Re: George J. Varney

Group: AirborneWindEnergy Message: 22123 From: dave santos Date: 3/3/2017
Subject: Wind Market Analysts predicting AWES to compete with Wind Towers

Group: AirborneWindEnergy Message: 22124 From: dave santos Date: 3/3/2017
Subject: Re: The type "M" kite balloon handbook. October, 1919.

Group: AirborneWindEnergy Message: 22125 From: joe_f_90032 Date: 3/3/2017
Subject: Re: George J. Varney

Group: AirborneWindEnergy Message: 22126 From: dave santos Date: 3/3/2017
Subject: Rod Read on Deutsche Welle

Group: AirborneWindEnergy Message: 22127 From: dave santos Date: 3/3/2017
Subject: Re: Dreaming AWES

Group: AirborneWindEnergy Message: 22128 From: joe_f_90032 Date: 3/3/2017
Subject: AWES at Festivals

Group: AirborneWindEnergy Message: 22129 From: joe_f_90032 Date: 3/4/2017
Subject: Re: KGM1

Group: AirborneWindEnergy Message: 22130 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Dreaming AWES

Group: AirborneWindEnergy Message: 22131 From: Marco Ghivarello Date: 3/4/2017
Subject: Re: KGM1

Group: AirborneWindEnergy Message: 22132 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Ampyx news

Group: AirborneWindEnergy Message: 22133 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Rod Read on Deutsche Welle

Group: AirborneWindEnergy Message: 22134 From: dave santos Date: 3/4/2017
Subject: Re: Ampyx news

Group: AirborneWindEnergy Message: 22135 From: joe_f_90032 Date: 3/4/2017
Subject: Marcelo De Lellis Costa de Oliveira

Group: AirborneWindEnergy Message: 22136 From: Joe Faust Date: 3/4/2017
Subject: Re: Marcelo De Lellis Costa de Oliveira

Group: AirborneWindEnergy Message: 22137 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Marcelo De Lellis Costa de Oliveira

Group: AirborneWindEnergy Message: 22138 From: Joe Faust Date: 3/4/2017
Subject: Maillot's Gigantic Kite in 1886

Group: AirborneWindEnergy Message: 22139 From: dave santos Date: 3/4/2017
Subject: Re: Marcelo De Lellis Costa de Oliveira

Group: AirborneWindEnergy Message: 22141 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Marcelo De Lellis Costa de Oliveira

Group: AirborneWindEnergy Message: 22142 From: joe_f_90032 Date: 3/5/2017
Subject: Seaboater

Group: AirborneWindEnergy Message: 22143 From: joe_f_90032 Date: 3/5/2017
Subject: Re: BEV and BEC news

Group: AirborneWindEnergy Message: 22144 From: joe_f_90032 Date: 3/5/2017
Subject: Re: BEV and BEC news

Group: AirborneWindEnergy Message: 22145 From: dave santos Date: 3/5/2017
Subject: Re: Seaboater

Group: AirborneWindEnergy Message: 22146 From: dave santos Date: 3/5/2017
Subject: Re: BEV and BEC news

Group: AirborneWindEnergy Message: 22147 From: dave santos Date: 3/5/2017
Subject: Pilot Wave Theory of Kites (review and update)

Group: AirborneWindEnergy Message: 22148 From: joe_f_90032 Date: 3/5/2017
Subject: Re: Forum headline images

Group: AirborneWindEnergy Message: 22149 From: Joe Faust Date: 3/5/2017
Subject: John Browning and natural materials

Group: AirborneWindEnergy Message: 22150 From: joe_f_90032 Date: 3/5/2017
Subject: Hargrave

Group: AirborneWindEnergy Message: 22151 From: joe_f_90032 Date: 3/5/2017
Subject: Re: Forum headline images

Group: AirborneWindEnergy Message: 22153 From: joe_f_90032 Date: 3/5/2017
Subject: Stacks

Group: AirborneWindEnergy Message: 22154 From: joe_f_90032 Date: 3/5/2017
Subject: Re: Stacks

Group: AirborneWindEnergy Message: 22155 From: dave santos Date: 3/5/2017
Subject: Re: Stacks

Group: AirborneWindEnergy Message: 22156 From: benhaiemp Date: 3/6/2017
Subject: Re: Soft vs Rigid Wings

Group: AirborneWindEnergy Message: 22157 From: joe_f_90032 Date: 3/6/2017
Subject: Re: Stacks

Group: AirborneWindEnergy Message: 22158 From: dave santos Date: 3/6/2017
Subject: Re: Soft vs Rigid Wings

Group: AirborneWindEnergy Message: 22159 From: dave santos Date: 3/6/2017
Subject: Re: Stacks



Group: AirborneWindEnergy Message: 22106 From: benhaiemp Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings
This analysis could be confirmed by the weight/m² of used ripstop as it does not increase when the spinnaker or the hot balloon becomes larger.

So weight penalty could be lesser for single skin kites as they scale up. More analysis please?
Group: AirborneWindEnergy Message: 22107 From: benhaiemp Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings

Correction: "For example when the kite is 1000 m²  the weight/m² fabrics is about 2 to 3 times the weight/m² fabrics for a 100 m² kite."

So the weight penalty is also a concern for soft kites as they scale up.
Group: AirborneWindEnergy Message: 22108 From: Joe Faust Date: 3/2/2017
Subject: George J. Varney
https://play.google.com/store/books/author?id=George+J.+Varney

Hope this links openly works.  

George J. Varney

Kites: how to Make and how to Fly Them
Group: AirborneWindEnergy Message: 22110 From: joe_f_90032 Date: 3/2/2017
Subject: Re: George J. Varney
Google Books had a copy that was missing page "4" and also had "3" at the end of the file. Internet Archive had a copy with "3" and "4" at the end of the file. 

EnergyKiteSystems.net  captured and organized the pages into a file that may be the only correctly-ordered complete copy of the book now:     About 2 MB PDF file.  Save to your local computer?   Copyright-free. 

Enjoy. 



================================
Group: AirborneWindEnergy Message: 22111 From: joe_f_90032 Date: 3/2/2017
Subject: Dreaming AWES
===========correcting spelling: 


Dream last night: Tall guy throws up a pack; pack expands to set of wings for a train. 
Each wing in the kite was hygroscopic. Following some time the wings were heavy 
with collected water and the wing set came down to the ground. 
Villagers squeezed the water from the wings for drinking and other uses. 
 ~ JoeF
Group: AirborneWindEnergy Message: 22112 From: dave santos Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings
Review: Megascale soft kites scale by added fractal dimensions of load-path networks, which is slower dimensionless mass-increase than normal scaling. Scaling limits of soft kites of course has always been a "concern" to the kite experts, while scaling limits of rigid wings was considered more of a total disaster. Part of the problem is that our FAA-designated airspace remains constant, with relatively low most-probable wind, while large rigid wings demand more and more airspeed just to fly, with little Gibbs Energy left to harvest.

The record will show that the AWES Forum has always been the place where AWE scaling issues were best understood; for example, that Makani never really had a realistic chance to scale its AWES unit architecture, but that SS kites were the least limited. Other major sources of AWE information, like the Springer AWE book, and AWEC "hijacked" conferences, lacked such developed insights, specifically due to the Open-AWE submission boycott to those sources, in protest of wrongful AWEIA and John Oyebanji exclusion. 



On Thursday, March 2, 2017 5:43 AM, "pierre-benhaiem@orange.fr [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Correction: "For example when the kite is 1000 m²  the weight/m² fabrics is about 2 to 3 times the weight/m² fabrics for a 100 m² kite."
So the weight penalty is also a concern for soft kites as they scale up.
Group: AirborneWindEnergy Message: 22113 From: joe_f_90032 Date: 3/2/2017
Subject: Re: George J. Varney
My take is that the non-illustrated text clipped here from his book might indicate an important precursor to Rogallo's and Jalbert's ram-air mullings; notice that the use of the word "balloon" is in a constrained sense where bulbous shaping occurs upon rammed air dynamics; both inlet and outlets are instructed:

"Balloon Kite
Any kite here mentioned, except those of the Hargrave type, may be turned into a wind balloon by being furnished with a covering on the back or upward side. The rotundity will, of course, depend on th degree of slackness of the back covering. This should be very light and pliable. Tissue paper would serve excellently were it strong enough, but it is apt to burst from the pressure of the wind.  Japanese paper (not often met with except in the form of handkerchiefs or napkins) would be much better.  The wind is admitted through one or more holes in th front covering near the centre of the kite.  The diameter of these apertures should not be more than an inch to a a foot of the kite's width. It is necessary to have a vent for the wind in the balloon covering to avoid its bursting in gusts. This should be at the bottom of the kite and of equal capacity with the wind inlets. This form, properly made, is a better flyer than the common kite."
pgs 21-22. 
Varney, Kites, 1897. 
Group: AirborneWindEnergy Message: 22114 From: joe_f_90032 Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings

Analysis of soft trains form a sector of this topic that may need more attention. 

The strains on involved fabric used in 100 element wings in train or other complex tree each being 100 m^2 will be different than the strain on one kited 10,000 m^2 wing.   Suppose squares; the 100 wings in train where each element wing has 10 m L.E. gives 1,000 m of L.E. run; differently, the 10,000 m^2 single wing under square assumption would have but 100 m of L.E. which is 1/10 of the L.E. of the train which train holds the same area of fabric at 10,000 m^2.   The train gives 10 times the run of L.E.  while the fabric strains are less than in the single large wing.     Trains' tapered tethers supply some opportunities. 
Group: AirborneWindEnergy Message: 22115 From: dave santos Date: 3/2/2017
Subject: Re: Soft vs Rigid Wings
Good focus on trains/stacks. Most trains have been stick-kite based. Soft-kite trains will be far more powerful, but have been less explored.

The century-old German 10km altitude record by a kite train shows 1D scaling potential that in principle extends in 2D by imagining many trains side-by-side.


On Thursday, March 2, 2017 12:12 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  

Analysis of soft trains form a sector of this topic that may need more attention. 

The strains on involved fabric used in 100 element wings in train or other complex tree each being 100 m^2 will be different than the strain on one kited 10,000 m^2 wing.   Suppose squares; the 100 wings in train where each element wing has 10 m L.E. gives 1,000 m of L.E. run; differently, the 10,000 m^2 single wing under square assumption would have but 100 m of L.E. which is 1/10 of the L.E. of the train which train holds the same area of fabric at 10,000 m^2.   The train gives 10 times the run of L.E.  while the fabric strains are less than in the single large wing.     Trains' tapered tethers supply some opportunities. 
Group: AirborneWindEnergy Message: 22116 From: dave santos Date: 3/2/2017
Subject: AWEIA recommended helium-ban in AWE?
There continue to be AWE LTA advocates. The least credible are the hydrogen LTA fans, those who misunderstand barriers to hydrogen adoption, like air-contamination explosion risk, greenhouse-gas effect, and corrosive reactivity. Helium is hardly more practical, with its high cost and difficult distribution in pressure tanks.

Asimov warned us that helium is too precious to waste in balloons, and Tom Welton of Imperial College is carrying on the cause. AWEIA may need to take a stand against helium dependence in AWE, as both unnecessary in practice and harmful to competing societal needs, like low-loss medical and scientific use of helium. A niche helium-case exception in AWE might be humanitarian emergency response, but the "remote resort" LTA AWES market is best left undeveloped. Poor populations are unlikely to ever afford helium wastage, as a moot issue.

This is an advisory notice to AWEIA's member community; a proposal for consensus as part of a general renewal of AWEIA's policy leadership role as a proactive industry association, socially responsible to all stakeholders-
Group: AirborneWindEnergy Message: 22117 From: joe_f_90032 Date: 3/2/2017
Subject: Re: George J. Varney
Precursor to triangle control bar for gliding kites (kite hang gliders) ?????
TCFinKitesVarney1897p29.pngNote: The triangle control frame for kite hang gliders did show in a 1908 hang gliding meet; user: 
Group: AirborneWindEnergy Message: 22118 From: dave santos Date: 3/2/2017
Subject: COTS Mega-Clutches to convert Power Plants to AWE Hybrids
Consider an existing large-scale power plant, with access to its power shafts; how could it be converted into a kite-hybrid, with the capability to smoothly mix the transition from kite power to legacy power? The answer is to mix in the kite power via the largest COTS clutches, like this clutch product by Eaton, intended for mining-



Ideally, the legacy power source can be mixed and throttled in real time to match the fluctuations in kite power, This could be done with small backup generators as a starting demo and small AWE app. Clutch options include passive or active over-running control.

Open-AWE_IP-Cloud
Group: AirborneWindEnergy Message: 22119 From: dave santos Date: 3/2/2017
Subject: Re: George J. Varney
[Varney 1897] is full of gems of many kinds. Yes, his "balloon kite" presentation is arguably a Kytoon, down to its ram-air pressure with its bit of heat-of-compression lift. We thought such thinking avant-garde, but Varney was thinking outside that (kite) box (kite) when our great grandparents were young. He also invokes the kite in its therapeutic role, notes fundamental harmonics in Chinese train kites, which pushes back priority for such ideas by a century. For scholarly dessert, there are many odd kite rumors to track down that are new to us (like Maylay kite origin-myth, to square with the Chinese and Indonesian claims).

Where is the copy-and-pastable beginning text? Am only seeing photo-scan or missing pages.


On Thursday, March 2, 2017 1:13 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Precursor to triangle control bar for gliding kites (kite hang gliders) ?????
TCFinKitesVarney1897p29.pngNote: The triangle control frame for kite hang gliders did show in a 1908 hang gliding meet; user: 
Group: AirborneWindEnergy Message: 22120 From: dave santos Date: 3/2/2017
Subject: Re: COTS Mega-Clutches to convert Power Plants to AWE Hybrids
Note that an advantage of a controllable clutch may be to run a kitefarm in motor-mode or gen mode, while an over-running clutch runs in just one direction (mechanical diode).

SSS is a COTS 300MW clutch provider. Some of the clutches are switchable between over-running and brake modes. Follow the menu to lots of great info, including dual-driven generators, which are an ideal kite-gasturbine pilot-plant starter-
Group: AirborneWindEnergy Message: 22122 From: dave santos Date: 3/3/2017
Subject: Re: George J. Varney
Thanks JoeF, the OCR worked well enough, and a bit more digging discovered Master Cao (but not yet his therapeutic-kite treatise).*

Here is Varney's fine 1897 intro that lays out the essentials of Therapeutic Kite Flying in its earliest Western reference we have. Varney notes the simplicity and versatility of kite flying. On the cognitive side, a stimulating effects (even contact-high) are observed, with anti-depressant benefit to the "worried and weary", and even quasi-Maslovian spiritual contemplation and exaltation claimed. As a physical therapy (low-impact excercise), kites are "one of the best, from its various but not over-violent action and the erectness of posture which pertains to it in an unusual degree," the same orthopedic benefit Master Cao cited in the Qing Dynasty.* Varney:
Group: AirborneWindEnergy Message: 22123 From: dave santos Date: 3/3/2017
Subject: Wind Market Analysts predicting AWES to compete with Wind Towers
From a "market report" such as we see following similar lines of thought we have explored, but at a very low level of AWE domain expertise. This is the same long-standing forecast Mike Barnard argued against, that AWE could someday displace conventional wind farms-

"The increased height of the tower also adds to the upfront cost, which is already a barrier for wind power generation. To overcome such problems a new class of wind turbines has been developed called the Airborne Wind Energy Systems (AWES). These turbines can capture wind energy at a significantly higher altitude. By design, these turbines do not require a tower to be fixed upon. They are tethered by wires or ropes that hold the turbine steady and transfer the electricity generated to the base station located on the ground. Therefore, the development of AWES and its adoption is expected to have a negative impact on the wind tower market, although not immediately, but at a later stage."
Group: AirborneWindEnergy Message: 22124 From: dave santos Date: 3/3/2017
Subject: Re: The type "M" kite balloon handbook. October, 1919.
Having just finished reading this excellent 1919 military aerostat manual, its clearly one more practical classic for AWE developers, on a par with other top manuals of the era (rope-driving, seamanship (ship-anchoring, sail-rigging and handling), barrage-balloons, and so on). These old technologies are close operational similarity cases for our dangerous AWES R&D scaling challenges. They represent "lost-worlds" of vast hard-won experience ("paid in blood"). I wish we had known this manual back in the '80's, when we were reinventing LTA dirigibles as flying robots [Austin Robot Group]. Its also a good overview of hydrogen gas operational risk, which probably exceeded direct wartime dangers to crews. Yes, Zeppelins did routinize civilian hydrogen-based LTA transport, but it was never cheap and did not end well, and the greenhouse-gas issue is now an added barrier to H2 re-adoption.


On Thursday, March 2, 2017 12:27 AM, "dave santos santos137@yahoo.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
This rare historic document proves Jalbert is not the inventor of the "kite-balloon" concept, as often attributed* (he did name the class- "Kytoon", designed variants, but above all, invented the parafoil).

* Wikipedia gives the conventional misrepresentation of kite-balloon priority-





On Wednesday, March 1, 2017 9:09 PM, "Joe Faust joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
PDF, digitized by Google


The type "M" kite balloon handbook
United States. 
Navy Dept. Bureau of Construction and Repair
October, 1919
Group: AirborneWindEnergy Message: 22125 From: joe_f_90032 Date: 3/3/2017
Subject: Re: George J. Varney

Group: AirborneWindEnergy Message: 22126 From: dave santos Date: 3/3/2017
Subject: Rod Read on Deutsche Welle
Group: AirborneWindEnergy Message: 22127 From: dave santos Date: 3/3/2017
Subject: Re: Dreaming AWES
This dream resonates with multiple concepts.

Yes, a pack could contain a kite system that pops up and taps condensate water; after all, Stone Age Polynesians tapped such water by kites.

A kite train is effectively Dave Culp's "flying rope" in thick form. One could pack a kite train as a novel parachute, with perhaps some advantages, like reducing opening-shock, easing packing chore, etc..

Raising water up by kite train to chill it is a promising app. A train develops max lift to width ratio, to lift a lot of water. Many variants possible- evaporative chill-boosting, heat exchanger, bucket brigade (warm water raised and traded for cold), etc. This could be useful at small or large scale for refrigeration and airconditioning.



On Thursday, March 2, 2017 8:24 AM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
===========correcting spelling: 


Dream last night: Tall guy throws up a pack; pack expands to set of wings for a train. 
Each wing in the kite was hygroscopic. Following some time the wings were heavy 
with collected water and the wing set came down to the ground. 
Villagers squeezed the water from the wings for drinking and other uses. 
 ~ JoeF
Group: AirborneWindEnergy Message: 22128 From: joe_f_90032 Date: 3/3/2017
Subject: AWES at Festivals

AWES at Festivals ... how fast will the sector grow?  

Tasks, PTO demonstrations, doing good works, ... 


Already the festivals seem to being good works!  More will arrive!


https://www.youtube.com/watch?v=yD07wHwlL2o
Group: AirborneWindEnergy Message: 22129 From: joe_f_90032 Date: 3/4/2017
Subject: Re: KGM1
Please note in topic that two former files have been removed. 
We now happily install a new Executive Summary: 
Group: AirborneWindEnergy Message: 22130 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Dreaming AWES
Each bump in the shown flying rope is told to be three inches in a dimension: 

PTO ideas?
Group: AirborneWindEnergy Message: 22131 From: Marco Ghivarello Date: 3/4/2017
Subject: Re: KGM1
Thanks Joe!
We' re also ready to send the BUSINESS PLAN, after signing a NDA, my contact mail is ghiva@ghiprog.it
Best.
Marco


On Saturday, March 4, 2017 4:38 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Please note in topic that two former files have been removed. 
We now happily install a new Executive Summary: 
Group: AirborneWindEnergy Message: 22132 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Ampyx news
Group: AirborneWindEnergy Message: 22133 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Rod Read on Deutsche Welle
Radiance of same found its way into  

ECO@AFRICA


========================
 
Group: AirborneWindEnergy Message: 22134 From: dave santos Date: 3/4/2017
Subject: Re: Ampyx news
Just like Makani in the past, Ampyx job listings reveal a lot more than their marketing hype. We see deployment claims once again extended (to 2020) and key aspects of the program rebooting from scratch, having apparently not succeeded earlier. Critical engineering concerns are revealed over inherent architectural weaknesses, like jammable RF control links and marginal structural limits. Like Makani, an unwise strategic decision to flight-test remotely is extending engineering supply-lines, and will cause greater costs and delays (remote testing distances from  


Group: AirborneWindEnergy Message: 22135 From: joe_f_90032 Date: 3/4/2017
Subject: Marcelo De Lellis Costa de Oliveira

PDF, 190 p.   Congratulations, Marcelo!

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


AIRBORNE WIND ENERGY WITH TETHERED WINGS:

MODELING, ANALYSIS AND CONTROL

https://repositorio.ufsc.br/bitstream/handle/123456789/173661/344130.pdf


Oliveira, Marcelo De Lellis Costa de


Airborne wind energy with tethered wings : Modeling,

analysis and control / Marcelo De Lellis Costa de Oliveira

; orientador, Alexandre Trofino Neto - Florianópolis, SC,

2016.

190 p.

Tese (doutorado) - Universidade Federal de Santa

Catarina, Centro Tecnológico. Programa de Pós-Graduação em

Engenharia de Automação e Sistemas.

Inclui referências

1. Engenharia de Automação e Sistemas. 2. Energia eólica

aérea. 3. Aerofólios cabeados. 4. Modelagem. 5. Controle de

voo. I. Trofino Neto, Alexandre. II. Universidade Federal

de Santa Catarina. Programa de Pós-Graduação em Engenharia

de Automação e Sistemas. III. Título.


"During the years, our research group and project, named “UFSCkite”,

grew on size and received crucial support from the Department of Automation

and Systems (DAS) and the Technological Center (CTC) of the Federal

University of Santa Catarina. This dissertation was also supported by the

Coordination for the Improvement of Higher Education Personnel (CAPES)

through a doctoral scholarship, and by the National Council for Scientific

and Technological Development (CNPq) through grants 480931/2013-5 and

406996/2013-0. Many thanks also to all the people who contributed in any

way to our initiative and, by doing so, to the completion of this work."



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

Thanks to RolandS for tip on the above!
Group: AirborneWindEnergy Message: 22136 From: Joe Faust Date: 3/4/2017
Subject: Re: Marcelo De Lellis Costa de Oliveira
Following "UFSCkite" we also find "RoboKite"
Group: AirborneWindEnergy Message: 22137 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Marcelo De Lellis Costa de Oliveira
Group: AirborneWindEnergy Message: 22138 From: Joe Faust Date: 3/4/2017
Subject: Maillot's Gigantic Kite in 1886
Group: AirborneWindEnergy Message: 22139 From: dave santos Date: 3/4/2017
Subject: Re: Marcelo De Lellis Costa de Oliveira
The student team prototype work is quite impressive, even if PTO capability is still pending. That parafoil really gets going in a stiff breeze, with robust actuation looks. Marcelo's Thesis is worthy, if a bit of a let-down.  We continue to see AWE PhD theses mostly repeat known principles and only slightly advance the fixed conventional reeling AWE paradigm of the advisor-examiners whose credentialism successfully lands AWE grants, but real engineering success is not so evident. Marcelo's narrow view from AWE's Ivory Tower comes at some cost to the actual historic record. For example, two academics are credited with the "dancing kite" concept of Payne, thirty years earlier. Oberth is overlooked as top aerospace AWE theorist years before Loyd. Marcelo borders on discovering a wider AWE world in citing Leo Goldstein's "fast load-motion" presentations, but overlooks kPower had already disclosed and demoed fast load-motion years earlier.* 

The optimistic view is that its still wide-open for world-changing AWE architectures to emerge from Academia.

---------------
* Marcelo-
Group: AirborneWindEnergy Message: 22141 From: joe_f_90032 Date: 3/4/2017
Subject: Re: Marcelo De Lellis Costa de Oliveira
Group: AirborneWindEnergy Message: 22142 From: joe_f_90032 Date: 3/5/2017
Subject: Seaboater

  • Seaboater     [ two domains:  seaboater.com  and    seaboateryachts.com  since April2009; SeaBoater* is a brand of GMUnion management which started in 2008] 

  • Goran Pinjusic    "Goran Pinjusic is the designer of the Seaboater 787 Kiteboat yacht."  "Lives in Split, Croatia"



Not yet sure of the connections:
Environmental Activist Goran Pinjusic Started Kiteboat Building Through the "I Love the Planet" Charity Association

16 NOVEMBER 2012
=====================================

http://ilovetheplanet.ngo/

One author: "They are committed to promoting existing ecological, technical kite-sail solutions through their eco-boat project"
=====================


Comments: 

As yet: I see concept art only. 

I sense very high enthusiasm in 2012. 

I could find no second use of the "Green Kites Seal."
Group: AirborneWindEnergy Message: 22143 From: joe_f_90032 Date: 3/5/2017
Subject: Re: BEV and BEC news
Group: AirborneWindEnergy Message: 22144 From: joe_f_90032 Date: 3/5/2017
Subject: Re: BEV and BEC news
Group: AirborneWindEnergy Message: 22145 From: dave santos Date: 3/5/2017
Subject: Re: Seaboater
The "eco" sustainability of new 100 ton yachts, kites or not, is rather like "ecotourism" based on jet travel; more "marketing green" than actually green.

One would do far better to recycle a small fishing trawler into something like this, or even better, a sailing yacht hull. The increasingly popular cruising trawler form is like boxy car styling, not a suitable sea format for windward kitesailing, with a blunt hull form below the waterline and high windage above, so it would have to motor a lot of the time. A regen motor/gen drive would help. As depicted, there is no well worked out kite system, like SkySails' launching-landing mast and control-pod.





On Sunday, March 5, 2017 6:35 AM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
  • Seaboater     [ two domains:  seaboater.com  and    seaboateryachts.com  since April2009; SeaBoater* is a brand of GMUnion management which started in 2008] 

  • Goran Pinjusic    "Goran Pinjusic is the designer of the Seaboater 787 Kiteboat yacht."  "Lives in Split, Croatia"



Not yet sure of the connections:
Environmental Activist Goran Pinjusic Started Kiteboat Building Through the "I Love the Planet" Charity Association
16 NOVEMBER 2012
=====================================

http://ilovetheplanet.ngo/

One author: "They are committed to promoting existing ecological, technical kite-sail solutions through their eco-boat project"
=====================


Comments: 
As yet: I see concept art only. 
I sense very high enthusiasm in 2012. 
I could find no second use of the "Green Kites Seal."
Group: AirborneWindEnergy Message: 22146 From: dave santos Date: 3/5/2017
Subject: Re: BEV and BEC news
BEV may end up more of a cautious investment management than game-changing energy innovator, based on the conventional profiles of the managers. If whats truly needed is an urgently intense effort of test engineers-run-wild, not timid functionaries slowly trying to pick sure investment bets, then BEV may already be off-track. The quickest way to find hidden needles in a haystack is to burn it, not re-create ARPA-E's bureaucracy under investment bankers. At this rate, BEV will need public outcry to incentivize its managers to foster a passionate engineering culture of heroic risks. True energy breakthroughs are multi-trillion-dollar propositions far beyond normal planning calculation. A mere billion dollars invested too cautiously cannot save the world.


On Sunday, March 5, 2017 8:03 AM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  


Group: AirborneWindEnergy Message: 22147 From: dave santos Date: 3/5/2017
Subject: Pilot Wave Theory of Kites (review and update)
Folks look at a dancing kite and easily see many different things, but not so easily see invisible clues to AWE that modern physics predicts. Varney put the problem well, of romantic "contemplation" of  "mysterious dalliances with invisible zephyrs", but since around 2012, we are slowly resolving under deBroglie-Bohm Pilot Wave Theory. Kite flight is far more than its apparatus, its a complex wave-function packet in a wind (and gravity) field whose structure is written in the wake and pressure far-field. Its not just the 6DOF model seen in AWE papers. Gravity and the tether's elastic field are wave-function dimensions. This is the complex Pilot Field that determines how a kite flies, in accord with thermodynamic law, and ultimately classical in its complex determinism.

The kite is a heat engine, with a hot and cold side, that performs the work of levitating mass. Textbook thermodynamics since Joule regards work and heat as "equivalent" or "interchangeable". The arc of physics since is to ultimately see work and heat as not just equivalent but essentially the same thing in dimensionless terms, as pure motion of potential kinetic energy, under a more subtle definition of temperature [Debye]. In the case of wind, there is conventional temperature of the air, but also the considerable "missing" heat "increase" that would appear if the wind were suddenly jammed to a halt. AWE actually raises the conventional temperature of air as it extracts kinetic heat as AWE. Peter Holland defines this sort of energy as "hidden motion", but we locate it in kite pilot-wave QM.

Newton's classical physics started with kite dynamics, as a teenage kite experimenter-prankster, but initial classical physics was incomplete and never fully grasped the kite. Once [van Veem 1996] identified kite chaos, there was no going back, and the kite continued revealing itself in terms of modern physics. An physics-ontology anomaly emerged as the Schrodinger Wave Function was observed in kite motions [KiteLab, ~2008-forward]. Re-formulation of Planck's Constant took the form of its ad hoc quantum-of-action to be substituted by characteristic-length in Reynold's Numbers. The improvement in picturing macroscopic QM was as striking as fixing the Hubble telescope. Hydrodynamic Pilot-Wave Theory was found a compatible form of QM for kite physics [Towler, Holland]. Kite arrays were identified as a theoretic macroscopic metamaterial, obeying principles of topological stability. Ultimately we analytically reconciled Brane and String Theory to our "rag and string" domain. A string is a string is a string. We may still tactfully refer to the correlations as "QM analogs", as third-party validation grows of kites as a first-class QFT case. 

During the same two decades of modern kite science, general physics also continued advancing. The dominant Copenhagen Interpretation and limitation of Planck's Constant precluded kites, reductio-ad-absurdum, yet began to show cracks (Einstein himself was the orginal dissenter). [Crouder, et al] legitimized Pilot-Wave Theory experimentally. Bench-top experiments with bouncing drops and then kites became the two known Pilot Wave experimental QM analogs. Where are we now? Ongoing polling of elite physicists reveals a shift from Copenhagen school uncertainty in favor of deterministic alternatives [Wikipedia] like Many-Worlds and Pilot Wave theories. Einstein is hailed yet again for having had a correct intuition, in this case that Copenhagen was incomplete, and hidden-variables somehow ruled. Perhaps the most dramatic public defection [NYT, 2017] of the Copenhagen School is Steven Weinberg, Nobel Laureate, of UTexas, who studied under Bohr himself in Copenhagen generations ago. 

Towler's Lectures on Pilot-Wave Theory at Cambridge continue to be best account of how PWT was sidelined. Rereading dredged up clues overlooked in my first-reading; for example, first de Broglie came up with PWT and matter-waves and then Schrodinger, in support, formulated his famous quantum wave-function, Schrodinger himself did not drink the Copenhagen Kool-Aid, and invented his cat gendanken to undermine it. Einstein personally internvened with Bohm to turn away from Copenhagen.


Eureka, third-party validation of kite QM by the same method presented on the AWES Forum, of replacing Planck's Constant's fixed atomic-scale quantum of action with a scale variable-


Towler's co-conspirator in undermining Copenhagen, Peter Holland, is clearly working the same ontological physics mystery as us, but without kite-clues-
Group: AirborneWindEnergy Message: 22148 From: joe_f_90032 Date: 3/5/2017
Subject: Re: Forum headline images
Wide -and-tall stacks with groundgen via long shaft using multiple tethers. 
Artistic sketch shown:

 
Group: AirborneWindEnergy Message: 22149 From: Joe Faust Date: 3/5/2017
Subject: John Browning and natural materials
​John Browning - Kites: The Art of Natural Materials

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

About book​

  
See his home page:  http://www.johnbrowningkites.org/
=========================================

Ah! AWE section to future kite festivals?
Practical tasks and energy mining using natural materials???
Group: AirborneWindEnergy Message: 22150 From: joe_f_90032 Date: 3/5/2017
Subject: Hargrave
Group: AirborneWindEnergy Message: 22151 From: joe_f_90032 Date: 3/5/2017
Subject: Re: Forum headline images
Group: AirborneWindEnergy Message: 22153 From: joe_f_90032 Date: 3/5/2017
Subject: Stacks

Stacks

(later walls or fences)

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


Start: 

http://www.cobrakites.com/jaclad.html    Ian Day

and 

http://www.dcss.org/speedsl/       Dave Culp


and 

https://www.youtube.com/watch?v=Lv04Iu56Ub4&t=53s    Paul Thody


========== and

https://www.youtube.com/watch?v=n3TpmQS4fOc


============= 

Consider flygen, groundgen; consider simple let-out and AoA return; consider soft, hybrid, or rigid. Practice single stacks in readying for parallel stacks (2, 3, 4, 5, ..., n) with aggregating stays; consider long gang ground shafts.  
Group: AirborneWindEnergy Message: 22154 From: joe_f_90032 Date: 3/5/2017
Subject: Re: Stacks
Group: AirborneWindEnergy Message: 22155 From: dave santos Date: 3/5/2017
Subject: Re: Stacks
A common characteristic of these early-modern stacks is close wing spacing such that under-wing high pressure partly cancels low pressure above-wing. This has several effects:  close stacks develop less power, but steering response is good, however harmonic gust and over-steering instabilities demand skilled handling.

Perhaps we can properly define the difference between kite "stack" and "train". Let a stack be defined as a train with a close arrangement of at least two wings, particularly like these vintage examples, and even counting ancient centipede-style kites as stacks. Let the full definition of kite trains include the most widely spaced kite arrangements, like those for absolute altitude records.


On Sunday, March 5, 2017 8:46 PM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  


Group: AirborneWindEnergy Message: 22156 From: benhaiemp Date: 3/6/2017
Subject: Re: Soft vs Rigid Wings

Concerning the used plastic film or the fabric. After some deeper investigations, discussions and other tests, in my opinion it is possible to produce some temporary conclusion about airborne wind energy systems: ripstop has appropriate mechanical properties but its lifetime is too short; and plastic films, including xf-film I mentioned, has a higher lifetime but their mechanical properties are too low. So a mix could be (and already have been) studied, but the task is not easy as the film-fabric complex should be light, and durable in spite of possible cohesion problems between components.

Concerning "rope-loadpath" network in giant soft-kites to carry the large forces" the problem can be the stress everywhere on the fabric within each square of the network. A deeper study is needed.
Group: AirborneWindEnergy Message: 22157 From: joe_f_90032 Date: 3/6/2017
Subject: Re: Stacks
For efficiency of a specified purpose, some final geometry will be chosen by balancing various parameters; tuning those parameters to meet objectives will keep analysts, engineers, builders, and pilots busy. One of the parameters regards the ratio of wing chord to the distance between connection points on two adjacent wings in the wing series; wake profiles at production attitudes will play to optimize that ratio. 
Group: AirborneWindEnergy Message: 22158 From: dave santos Date: 3/6/2017
Subject: Re: Soft vs Rigid Wings
Pierre,

The function of an engineered rope loadpath network (eg. Mothra) is to isolate the kixel panels (eg. "blue tarps" from the major stresses in the meta-kite. It worked; none of Mothra's kixels were damaged by loadpath forces.

You are confusing "polymer", "fiber", "ripstop", etc., by not  following their established definitions in materials engineering science. All polymers can be formed into fibers or membranes, and ripstop is a mechanical arrangement of fibers that can be long- or short-lived, according to what polymer is chosen. For example carbon-nanotube fibers can be woven into rip-stop, and prove very long-lived in service.

The best way to judge fibers in AWES engineering is by specific metrics. For example, if conventional ripstop currently has the best LCOE and fastest pay-back, that's  more helpful  expert knowledge than a personal opinion that "ripstop...lifetime is too short". In fact, rip-stop construction EXTENDS the working lifetime of kite fabrics.

Good luck discovering anything better than the best current polymer ripstop fabrics that are the COTS soft-kite industry standards, and which will continue to improve rapidly, with or without help from  AWE developers,

daveS


On Monday, March 6, 2017 10:27 AM, "pierre-benhaiem@orange.fr [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
Concerning the used plastic film or the fabric. After some deeper investigations, discussions and other tests, in my opinion it is possible to produce some temporary conclusion about airborne wind energy systems: ripstop has appropriate mechanical properties but its lifetime is too short; and plastic films, including xf-film I mentioned, has a higher lifetime but their mechanical properties are too low. So a mix could be (and already have been) studied, but the task is not easy as the film-fabric complex should be light, and durable in spite of possible cohesion problems between components.
Concerning "rope-loadpath" network in giant soft-kites to carry the large forces" the problem can be the stress everywhere on the fabric within each square of the network. A deeper study is needed.
Group: AirborneWindEnergy Message: 22159 From: dave santos Date: 3/6/2017
Subject: Re: Stacks
There are some special cases to consider-

- A stack that is laid-back in flight (low tether angle) "staggers" the wings. This helps in biplane design, but is not very helpful for normal kite stacks (we can stagger wings in a suitable 3D lattice).

- Just as Savonius and Flettner Rotors are most visually impressive for relatively limited power, the classic kite stack flown by hand is more visually impressive if its many wings are "choking" each other by close placement. The human can fly more wings with less pull for kite festival performance.

- Joe properly notes chord as a factor in spacing perfromance, and WS is a comparable factor, with the following heuristic somewhere in the literature, that spacing power kites ~3x WS reduces wing interference to negligible values in hobby use (yet still significant in power-to-weight efficiency).

- An updated rule-of-thumb is to stack kites far enough apart that they are staggered clear of each other (no overlap vertically). Shark and ray gill flaps are highly optimal biomimmetic  models.







On Monday, March 6, 2017 10:27 AM, "joefaust333@gmail.com [AirborneWindEnergy]" <AirborneWindEnergy@yahoogroups.com  
For efficiency of a specified purpose, some final geometry will be chosen by balancing various parameters; tuning those parameters to meet objectives will keep analysts, engineers, builders, and pilots busy. One of the parameters regards the ratio of wing chord to the distance between connection points on two adjacent wings in the wing series; wake profiles at production attitudes will play to optimize that ratio.