Dear Matthew Alice: Has anyone ever built a heavier-than-air device that flies by flapping its wings, either manned or remote control? If it hasn't been done, is it theoretically possible? Bruce M. Binder, Pacific Beach …
December 17, 1987
Posted December 17, 1987
Dear Matthew Alice: Has anyone ever built a heavier-than-air device that flies by flapping its wings, either manned or remote control? If it hasn't been done, is it theoretically possible? Bruce M. Binder, Pacific Beach …