Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1983-06-02
1984-07-10
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
B64B 2706, B64B 2738
Patent
active
044588607
ABSTRACT:
Rotary wing aircrafts comprise a fuselage having a rotor driving mast extending substantially vertically. A rotor comprising a plurality of rotors is mounted on the mast for at least feathering and flapping movement. The flapping hinge is offset radially outwardly from the axis of rotation. Further, the rotor blades have weights mounted on the outboard tip ends thereof. The arrangement provides a significantly improved controllability of the aircraft.
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Montgomery, "Sikorsky Helicopter Flight Theory for Pilots and Mechanics", 1964, pp. front-44.
Bramwell, Helicopter Dynamics, 1976, Halsfed Press, pp. 242-249.
Payne, Helicopter Dynamics and Aerodynamics, 1959, McMillan Co., pp. 151, 152, 173-180.
Miller, "Helicopter Control and Stability in Hovering Flight", Jour. of Aero. Sci., 1948, p. 457.
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