Makani Power: wind flying glider

Renewable energies except solar electric or thermal (seeforums dedicated below): wind turbines, energy from the sea, hydraulic and hydroelectricity, biomass, biogas, deep geothermal energy ...
Christophe
Moderator
Moderator
posts: 79136
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10976

Makani Power: wind flying glider




by Christophe » 24/04/14, 18:06

This UFO looks more like a drone at a power generation unit. This is however a wind turbine developed by the Californian company Makani Power. This model is airborne suspended in the air, attached to a lanyard, to capture strong and steady winds. It describes circular paths that reinforce his glider speed. Designers have already achieved last year testing a prototype of 30 kW and ambition to market in the future 5 MW models floating in 250 600 m. They point to the economic and energy savings of these structures compared to traditional wind turbines. These could have a load factor of 60%, two times more than the average generally used for offshore wind turbines. After floating wind turbines, zoom on the flying wind.

Image

Image

Source: http://www.connaissancedesenergies.org/ ... iee-130117

See as well:

https://www.econologie.com/forums/magenn-pow ... t1843.html

https://www.econologie.com/forums/cerf-volan ... t7394.html
0 x
Christophe
Moderator
Moderator
posts: 79136
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10976




by Christophe » 24/04/14, 18:25

Oops forgot the official website: http://www.google.com/makani

Yes the project is supported by Google
0 x
User avatar
Remundo
Moderator
Moderator
posts: 15998
Registration: 15/10/07, 16:05
Location: Clermont Ferrand
x 5194




by Remundo » 25/04/14, 12:51

but why do they rotate so intricately aircraft?

One could more imagine a stationary wing undergoing the lift of the wind ... and place on this wing "propellers" operating as wind turbines ... like a kite with a small wind turbine ...

Otherwise, this is not the first flying wind turbine concept attached to the ground by a cable ... that's tricky ...

@+
0 x
Image
Christophe
Moderator
Moderator
posts: 79136
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10976




by Christophe » 25/04/14, 12:56

In fact it turns in a circle may be just to orient the wind?
If indeed it is a waste of energy especially downwind!

I think the text in italics is wrong ... and 2ième picture a bit misleading ...

I have not looked at the official website in detail is certainly explained!
0 x
Stephen
I understand econologic
I understand econologic
posts: 68
Registration: 15/04/13, 10:34
x 1




by Stephen » 25/04/14, 14:36

probable hypothesis, inspired by the fact that a current racing yacht is capable of sailing much faster than the wind to best paces (through the broad reach): why not imagine that to turn in circles along a path necessarily always through the true wind (because it is captive) would give a linear speed much higher than that of the wind? In this case the rotors would be placed either in motion by the action of the true wind (as if it were static upwind) but only by the relative wind created by the movement of the machine. Given that wind energy increases with the square of its speed, the gain could be significant ...

But that is just a guess on my part ;-)
0 x
Surfeurseb
I understand econologic
I understand econologic
posts: 79
Registration: 01/12/05, 11:51
Location: Britain
x 1




by Surfeurseb » 25/04/14, 20:57

Memory, one of the creators of the project is a kitesurfer.
Like any kite surfer, he has noticed that a kite develops a lot more traction when it is moving in its "flying window" than when it is stationary.
It may indeed then fly much faster than the wind, and therefore generate much more lift.
Here the system seems content to the higher airspeed to increase the efficiency of embedded turbines.

Other projects try to take advantage of this increased traction of the kite, by alternating phases of "unwinding", producing energy, and phases of rewinding during which the traction is reduced to a minimum, consuming little energy. 'energy.
It is a little complex, depending on the wind turbines further than normal, hard to empower, but the potential is promising.
0 x
netshaman
I posted 500 messages!
I posted 500 messages!
posts: 532
Registration: 15/11/08, 12:57
x 2




by netshaman » 26/04/14, 13:13

: Shock:
Then I say it is an idea geniale!
It's either that we buy the shares?
: Mrgreen:

PS: On the video, at what point she begins to produce?
Is this the beginning of the rotation, because I assume that the launch is done using propellers propulsion fashion?
0 x
Christophe
Moderator
Moderator
posts: 79136
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10976




by Christophe » 26/04/14, 17:49

yes propellers may be propelling!

Another air wind: http://www.levif.be/info/actualite/envi ... 376338.htm
Last edited by Christophe the 28 / 04 / 14, 20: 33, 1 edited once.
0 x
netshaman
I posted 500 messages!
I posted 500 messages!
posts: 532
Registration: 15/11/08, 12:57
x 2




by netshaman » 26/04/14, 18:55

This is actually the principle of the kite, I understand.
When he stands still it draws very little, but do you lose the control and that it starts to turn, you feel that ca shoot!
He had to think!
Like what keep her mind of a child can be used ca!
Not take yourself too seriously in life, that is ca that drives the company towards a true civilization.
It is well known, the sooner we learn in s' fun!
0 x
Christophe
Moderator
Moderator
posts: 79136
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10976




by Christophe » 28/04/14, 20:34

Oops ... I corrected ...
0 x

Back to "hydraulic, wind, geothermal, marine energy, biogas ..."

Who is online ?

Users browsing this forum : No registered users and 201 guests