Procedure for utilizing the lift and thrust forces of ornithopters

for utilizing the lift and thrust forces inherent to the wings of ornithopter-type aircraft, characterized by the various movements made by two beating wings which together describe, in space, a trajectory representing a succession of interlaced triangles. During these various movements, identical forces are applied equally to each of the two beating wings, depending on the variation of this trajectory. The incidence of these two beating wings varies automatically as the craft functions; as they make their descent, which