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In a form off a kite can wind be redirected like a sail boat in any direction? Can cross winds around a jet stream be helpful in speed in such a design?

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  • $\begingroup$ You can't sail a sailboat directly up wind. Winds don't usually oppose, so what do you mean by crosswind? $\endgroup$ – Ron Beyer Feb 22 '16 at 20:09
  • $\begingroup$ related: aviation.stackexchange.com/questions/24420/… $\endgroup$ – user20435 Feb 22 '16 at 20:22
  • $\begingroup$ Boats have a keel and contact with water. $\endgroup$ – Steve Feb 22 '16 at 21:22
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    $\begingroup$ Hi Jen, I modified the title of your question. Aviation.SE is a little bit different than most web sites. Around here, we encourage you to repeat your actual question in the question title. If I misunderstood what you were asking, please feel free to re-edit. $\endgroup$ – Steve V. Feb 23 '16 at 1:50
  • $\begingroup$ @RonBeyer: It depends on the type of sail you use :D $\endgroup$ – slebetman Feb 23 '16 at 2:01
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Why do you need a kite? A glider is much better suited to the task.

Again, nature has invented this long ago. Albatrosses use a technique called dynamic soaring to cover wide distances over water, using the windshear close to the surface.

Humans have tried to imitate this with gliders, albeit with limited success. The few who tried it could indeed stay in the air by harvesting energy from windshear, but the dynamic loads (up to 4 g) were too much to do this over an extended time.

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  • $\begingroup$ a plane cannot bend its wings to maximize redirection of like a sail boat. $\endgroup$ – user20435 Feb 25 '16 at 4:16
  • $\begingroup$ @Jen: Redirection of what? If you have discovered a new law of physics, we would like to hear about it! $\endgroup$ – Peter Kämpf Feb 25 '16 at 22:26
  • $\begingroup$ a bird can bend one wing in on direction to redirect wind downward from a cross wind some what like a sail gliders can do that but a kite can. $\endgroup$ – user20435 Feb 26 '16 at 2:06