Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1993-04-08
1993-10-26
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
244 1725, 416 24, B64C 2757
Patent
active
052558711
ABSTRACT:
A helicopter comprises a pair of rotors each having a flap hinged to one of its edges, a seesaw rod swingably supported above the rotors, a pair of auxiliary wings fixed to opposite ends of the seesaw rod, and a pair of connecting rods each connecting one of the flaps with seesaw rod above it. When the lift produced by one of the rotors becomes larger than that produced by the other, the auxiliary wing located above the rotor producing the larger lift rises and turns up the flap of the rotor to reduce its flap effect and decrease the rotor lift, while the auxiliary wing located above the rotor producing the smaller lift lowers and turns down the flap of the rotor to increase its flap effect and raise its lift. As a result, the lifts of the two rotors are regulated.
REFERENCES:
patent: 1800470 (1931-04-01), Oehmichen
patent: 2041789 (1936-05-01), Stalker
patent: 2481750 (1949-09-01), Hiller, Jr. et al.
patent: 2514459 (1950-07-01), Stalker
patent: 2716460 (1955-08-01), Young
patent: 2980187 (1961-04-01), Smyth-Davila
patent: 2998850 (1961-09-01), Armstrong
John W. R. Taylor et al, "Jane's All The World's Aircraft", 75th Anniversary Issue, 1984-85, pp. 322, 418.
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