The dream [of flying] is as old as Icarus.. .I too want to give back to man the feeling of flight [with his 'Letatlin'-air-bike, 1929-1932]. This we have been robbed of by the mechanical flight of the aeroplane. We cannot feel the movement of our body in the air.
Notes from Wikiquote
The 'Letatlin' was a glider, what Tatlin called an 'air bike', since it would be manually pedaled by the user and contain no motor