Experimental Evidence of wind powered craft that can obtain thrust from an opposing wind
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In the words of the builder We built this in 2005 to answer, once and for all and without possibility of further argument, whether this was possible. (It seemed like it should work, but was one of those situations where I wanted to test to be certain - and to convince others :-)
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Archinaute
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Archinaute |
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Although these systems show that it is possible to completely overcome the headwind (using the headwind).
Even if the power is not sufficient to completely do this it does show that a suitably designed
rotor can aid the progress of a ship upwind because the thrust produced
by the rotor assembly is greater than the drag it creates.
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