This result is completely contrary to the oft quoted theory that no thrust can be generated at windspeed
In 2009 we set out to conclusively answer the following question... Can a vehicle be built which can go directly downwind, faster than the wind (DDWFTTW), powered only by the wind, steady state? On 3 July 2010 we established a world record by going directly downwind at 2.8 times the true wind speed with the Blackbird. Now we have begun to modify the Blackbird with the intention of going directly UP-wind faster than the wind - steady state.
Monday, March 8, 2010
Let's show some restraint here people
Enough excess thrust was generated *after* achieving windspeed, that the dyno was dragged down the parking lot several feet. To keep it in one place, we finally tied it off to the pick truck. The dyno is not on wheels btw, but skids.
This result is completely contrary to the oft quoted theory that no thrust can be generated at windspeed

This result is completely contrary to the oft quoted theory that no thrust can be generated at windspeed