Tail rotor anti-torque system for a helicopter

Details Tail rotor anti-torque system for a helicopter Tail rotor anti-torque system for a helicopter

1992-10-28

1993-10-12

Huppert, Michael S.

Aeronautics and astronautics

Aircraft, heavier-than-air

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

244 1721, B64C 2782

Patent

active

052518477

ABSTRACT:
An anti-torque system for a helicopter with a rearwards-elongated fuselage where an engine drives a main gearbox. The engine and the main gearbox are arranged in the central part of the fuselage. The anti-torque system includes an anti-torque tail rotor whose axis is transversal with respect to the fuselage and which is situated at the rear end of the fuselage. A fairing defines an aerodynamic tunnel in which the tail rotor is housed coaxially. The tunnel has a trailing edge on the downstream side of the airflow blown by the tail rotor. A tail gearbox is arranged in the tunnel and is able to rotationally drive the tail rotor. A rotating transmission shaft connects the main gearbox to the tail gearbox. The transmission shaft passes in the vicinity of the trailing edge of the tunnel.

REFERENCES:
patent: 2531976 (1950-11-01), Garrett
patent: 3583659 (1971-06-01), Lermusiaux
patent: 4506849 (1985-03-01), Lemont

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