Propulsive anti-torque system for rotorcraft

Details Propulsive anti-torque system for rotorcraft Propulsive anti-torque system for rotorcraft

B - Operations, Transporting

64

C

B64C 27/82 (2006.01)

Patent

CA 2580110

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.

L~invention concerne un giravion présentant une configuration améliorée dans laquelle une aile simple et un système de propulsion anticouple sont combinés. Le système de propulsion anticouple comprend un système propulseur anticouple dans lequel est installée une soufflante à pas variable à l~intérieur de la poutre de queue du giravion et une buse de poussée anticouple est montée à l~extrémité de la poutre de queue. La soufflante est entraînée directement par le dispositif d~entraînement du rotor principal. La configuration et l~emplacement de la soufflante permettent le mélange du flux primaire d~éjection provenant du moteur au flux d~air comprimé provenant de la soufflante. Le flux d~air mélangé provenant de la soufflante et du moteur passe à travers la poutre de queue et sort par la buse de poussée.

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