Igor I. Sikorsky Human Powered Helicopter Competition AeroVelo's Atlas human-powered helicopter conducted a flight that met all the requirements of the AHS International competition, and received the $250,000 prize. In the history of the prize, dozens of teams have designed and built human-powered helicopters, although few have made it airborne. The AHS competition was named in honor of Igor Sikorsky, one of the founders of the technical society. AHS initiated the prize purse at $25,000, but later raised it to $250,000. The first HPH to get off the ground was the "Da Vinci III" in 1989, designed and built by students at Cal Poly San Luis Obispo
Sikorsky Russky Vityaz Sikorsky Russky Vityaz The Sikorsky Russky Vityaz (), or Russian Knight, previously known as the Bolshoi Baltisky () "(The Great Baltic)" in its first four-engined version, was the first four-engine aircraft in the world, designed by Igor Sikorsky and built at the Russian Baltic Railroad Car Works ("Russo-Baltiiskyi Vagonnyi Zavod" or "R-BVZ") in Saint Petersburg in early 1913. Sikorsky conceived the S-21 design in 1911, when no known aircraft could lift more than . The carrying capacity record belonged to the French pilot Ducis, who had flown with a load of . On hearing about the construction of the "Russky