Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Reexamination Certificate
2004-09-28
2010-06-08
Dinh, Tien (Department: 3644)
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
C244S02300R
Reexamination Certificate
active
07731121
ABSTRACT:
A rotorcraft having an enhanced configuration in which a simple wing and a propulsive anti-torque system are combined is disclosed. The propulsive anti-torque system includes an anti-torque thruster system in which a variable pitch fan is installed internal to the tail boom of the rotorcraft and an anti-torque thruster nozzle is mounted at the extremity of the tail boom. The fan is driven directly from the main rotor drive. The configuration and location of the fan allows the primary exhaust from the engine to be mixed with the compressed air flow from the fan. The mixed air flow from the fan and the engine passes through the tail boom and out the thruster nozzle.
REFERENCES:
patent: 2420784 (1947-05-01), Larsen
patent: 2481749 (1949-09-01), Hiller, Jr.
patent: 2518697 (1950-08-01), Lee
patent: 3351304 (1967-11-01), Stein et al.
patent: 3807662 (1974-04-01), Velazquez
patent: 3957226 (1976-05-01), Daggett, Jr. et al.
patent: 4200252 (1980-04-01), Logan et al.
patent: D291194 (1987-08-01), Binden
patent: 4711415 (1987-12-01), Binden
patent: D297005 (1988-08-01), Whyte
patent: 4948068 (1990-08-01), VanHorn
patent: 5232183 (1993-08-01), Rumberger
patent: 5727757 (1998-03-01), Nyhus
patent: 6352220 (2002-03-01), Banks et al.
patent: 2238996 (1991-06-01), None
Hollimon Charles L.
Joiner Walter C.
Madej Paul J.
Robertson Daniel B.
Smith Dudley E.
Bell Helicopter Textron Inc.
Dinh Tien
Walton James E.
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