Sikorsky prize achieved
AeroVelo Human-Powered Helicopter Wins Elusive $250,000 Sikorsky Prize
The slashdot comments discuss/debate/speculate on the physics etc. involved. One note is that the prize requirements apparently specify that "a reference point on the non-rotating part of the machine will be established as a means whereby the observers can judge that the machine stayed within the confines of the 10-meter square," i.e. only that spot needs to remain within the 10x10m square, not the entire machine (which clearly exceeds 10m square :-) )
The slashdot comments discuss/debate/speculate on the physics etc. involved. One note is that the prize requirements apparently specify that "a reference point on the non-rotating part of the machine will be established as a means whereby the observers can judge that the machine stayed within the confines of the 10-meter square," i.e. only that spot needs to remain within the 10x10m square, not the entire machine (which clearly exceeds 10m square :-) )