ORNITHOPTER Russian patent published in 1994 - IPC

FIELD: ornithopters. SUBSTANCE: ornithopter has body 1 with passenger and cargo compartment 4, internal combustion lifting engines 5 and propulsive device 10. The propulsive device has stationary and upper planes with pivotally suspended plates. The upper plane is made for reciprocating movement. The ornithopter has a hydraulic system which connects lifting engines to propulsive device 10 made in the form of ring sectors, main engines and horizontal thrust propellers 15 which, in turn, have stationary and inner planes with pivotally suspended plates. The inner planes are made for reciprocating movement and are directly connected to rods of additional main engines. Two-stroke free-piston internal combustion engines are used as engines 5. EFFECT: simplified structure, reduced manufacture and operational cost, improved safety. 7 dwg