Ornithopter-type vehicle, and methods of constructing and utiliz

Details Ornithopter-type vehicle, and methods of constructing and utiliz Ornithopter-type vehicle, and methods of constructing and utiliz

1982-05-12

1988-06-07

Barefoot, Galen

Aeronautics and astronautics

Aircraft, heavier-than-air

Beating wing sustained

244 72, 244903, 244 11, B64C 3302

Patent

active

047491493

ABSTRACT:
An ornithopter which is propelled upwardly and forwardly by means of flapping wings, similar to the flight of a bird or bat. The power is supplied by a small engine that is mechanically-connected to a hydraulic pump which drives a single hydraulic cylinder and utilizes only the retraction stroke to power both wings simultaneously downwardly. The wings are brought back to the normal position by an elastic device, which in addition will not permit the wings to go beyond optimum positions. A double-acting hydralic cylinder is also provided to move the horizontal tail in an up and down motion. The operation of the wings can be automatic or manually-operated by the pilot. The rear legs and front support are constructed in such a manner that allows the ornithopter to rise and land vertically which permits takeoff and landing from most any type of terrain. The ornithopter can be assembled and disassembled quickly.

REFERENCES:
patent: 877529 (1908-01-01), Tkatzschenko
patent: 980840 (1911-01-01), Rozboril et al.
patent: 1247960 (1917-11-01), Jelalian
patent: 1989755 (1935-02-01), Jelalian
patent: 2783955 (1957-03-01), Fitzpatrick
patent: 2960285 (1960-11-01), Lopez
patent: 4220299 (1980-09-01), Motter

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