Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and helicopter sustained
Patent
1993-05-28
1995-10-03
Kashnikow, Andres
Aeronautics and astronautics
Aircraft, heavier-than-air
Airplane and helicopter sustained
244 6, 244 22, 244 8, 244 45A, B64C 2722, B64C 3912
Patent
active
054545307
ABSTRACT:
A dual-mode high speed rotorcraft is disclosed which combines the efficiency of a helicopter with the high-speed capability of a fixed wing aircraft. The rotorcraft includes a rotor for propulsion during low-speed flight and hover, which is stopped and locked to function as a fixed wing during a high-speed flight. Also included are a canard and a high-lift tail, which together function to provide substantially all of the lift for the rotorcraft during the transition between low and high-speed flight, so that the rotor may be unloaded while starting and stopping.
REFERENCES:
patent: 2879013 (1959-03-01), Herrick
patent: 4469294 (1984-09-01), Clifton
patent: 4589671 (1986-05-01), Ramme et al.
patent: 4711415 (1987-12-01), Binden
patent: 4730795 (1988-03-01), David
patent: 4896846 (1990-01-01), Strom
McDonnell William R.
O'Rourke Matthew
Rutherford John W.
Smith Brian T.
Kashnikow Andres
McDonnell Douglas Helicopter Company
Mojica Virna Lissi
Scholl John P.
Stout Donald E.
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