The technology of the bicycle, with its relatively low-loss chain and gear drive and rigid triangulated frame, has been applied to all successfull human-powered aircraft. The diagram shows the pilot's ...

The technology of the bicycle, with its relatively low-loss chain and gear drive and rigid triangulated frame, has been applied to all successful human-powered aircraft. The aircraft shown in the ...

Unlike fixed-wing aircraft, helicopters can’t produce lift without power. From one perspective, for a helicopter, a human is the worst conceivable source of power; a human being can barely ...