Patent ID: 8540187

Claim:
A muscle-powered aircraft that comprises the following: a fuselage having an inner flexible frame that is elastically deformable transversely to the aircraft's longitudinal axis, a pair of flapping wings having an alterable profile or rudder in an outer wing region (II) at a distance from the fuselage enabling alteration of the uplift in a predetermined flow, and an elevator unit with alterable pitch elevator deflection, wherein the pair of flapping wings and the fuselage are shaped from an elastic material having an elasticity that makes possible a flapping motion of the pair of flapping wings in a rigid connection with the fuselage, wherein said rigid connection is rigid in all directions, wherein the flapping wings when in a resting position are curved downwards and wherein said elasticity is such that when in flight the flapping wings are forced into a neutral position by the weight of a pilot, wherein the fuselage is configured to accommodate the pilot in an upright position with respect to a longitudinal axis of the fuselage so that the pilot can apply stress to and relieve stress from the aircraft in phases by stretching and drawing in the legs, wherein the flexible inner frame surrounds the pilot on at least two sides and the flapping wings are mounted on said at least two sides, the aircraft with flapping wings further having mechanical devices which facilitate an actuation of the alterable profile or rudder in the outer wing regions and of the alterable pitch elevator deflection in phase with the movement of the flapping wings.