AIRCRAFT (VERSIONS) Russian patent published in 2010 - IPC B64C33/00 

FIELD: air transport.

SUBSTANCE: aircraft as per the first alternative consists of hull with engine to which shaft tilted anchor gear with flapping wings is fixed. Tilted anchor gear includes mast; cone is put on the upper part of the mast. The cone performs function of an anchor and permanently touches support rim with its lower edge engaged in tooth gear. In the lower part of the cone there are valves opening inwards of the cone. Wings consisting of fins and impellers clevis-mounted along fins are connected from outside to the cone in semi-sphere base projection. When the engine operates the shaft rotates mast and the cone performs back-and-forth motions in vertical direction oscillating wings. Aircraft as per the second version consists of hull fixed in the upper part with tilted anchor mechanism and horizontal arm with lateral air propeller fixed behind hull. When the engine operates the shaft rotates and oscillates upper part of the mast; at the same time the cone rotates in direction of mast rotation and makes back-and-forth motions in vertical direction oscillating wings.

EFFECT: reduction of mechanical losses during conversion of shaft rotation motion into back-and-forth motion of aircraft flapping wings and increase of aircraft efficiency factor.

2 cl, 3 dwg