Helicopter target

Details Helicopter target Helicopter target

1987-03-10

1988-08-23

Barefoot, Galen

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

244 1711, 244190, 446 36, 273362, B64C 2702

Patent

active

047655674

ABSTRACT:
A remote-controlled autogyro visually and functionally simulates a helicopter with stub wings (e.g. the Hind D), so that an expendable helicopter-simulating target is produced. The target has a fixed angle rotor shaft, the rotor being solely aerodynamically controlled. The rotor blades have a negative pitch angle, and a positive conning angle. The engine is mounted at the front of the fuselage and has a downthrust angle, and the horizontal stabilizer also slopes downwardly aft. The rotor is at about the center of lift (horizontally) of the wings, and the wing span is about 50-60 percent the length of the fuselage. The ailerons and tail rudder are electrically interconnected. Remote control is provided for the elevators ailerons, and engine speed.

REFERENCES:
patent: 1947901 (1934-02-01), Cierva
patent: 2106783 (1938-02-01), Wilford
patent: 2192139 (1940-02-01), Larsen
patent: 2442846 (1948-06-01), Dunn
patent: 3141634 (1964-07-01), Rhoads et al.
patent: 3770229 (1973-11-01), Seefluth
patent: 3857194 (1974-12-01), Guttman
"Model Builder" vol. 5, No. 40, Apr. 1975, pp. 7-10, 66, 67.
Description of Hind D Helicopter, Apr. 30, 1980.
Description of Hughes AH-64 Apache Helicopter, admitted prior art.

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