Counter-torque device with rotor and flow straightening stator,

Details Counter-torque device with rotor and flow straightening stator, Counter-torque device with rotor and flow straightening stator,

1996-09-30

1997-06-03

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft, heavier-than-air

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

415119, B64C 2782

Patent

active

056346115

ABSTRACT:
A flow-straightening stator is fixed into the duct downstream of the rotor mounted so that it rotates in this duct, and includes vanes with aerodynamic profile which straightens out the airflow downstream of the rotor substantially along the axis of the duct, and are each inclined to the radial direction, from the axis of the duct towards its periphery, and in the opposite direction from the direction of rotation of the rotor, and/or inclined at a slant, from the center of the duct to its periphery and from upstream to downstream of the duct.

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Proceedings of the nineneenth european rotorcraft forum; Sep. 14, 1993, Cernobbio : "A new generation of fenestron fan-in-fin tail rotor on EC 135".
"Noise Reduction by Applying Modulation Principles" by Donald Ewald et al, published in The Journal of Acoustical Society of America, vol. 49, No. 5, 1971, pp. 1381 to 1385.

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