Ornithopter
A heavier-than-air flying machine that produces lift by flapping its wings. No practical ornithopter has been built.
Aviation Maintenance Technician Handbook — Airframe, p. G-24
A heavier-than-air flying machine that produces lift by flapping its wings. No practical ornithopter has been built.
Aviation Maintenance Technician Handbook — Airframe, p. G-24