Helicopter antitorque tail rotor

Details Helicopter antitorque tail rotor Helicopter antitorque tail rotor

2009-05-20

2011-11-15

Chu, Chris (Department: 2815)

Aeronautics and astronautics

Aircraft, heavier-than-air

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

C244S017110, C244S017130, C416S13400R, C416S138000

Reexamination Certificate

active

08056851

ABSTRACT:
A blade for an antitorque tail rotor of a helicopter, having a leading edge and a trailing edge opposite each other and elongated along a longitudinal axis of the blade; the trailing edge, in use, interacts with the air current after the leading edge; the blade also has two opposite surfaces extending between the leading edge and the trailing edge, and a root portion extending from a radially inner first end, with respect to a rotation axis of the blade, towards a second end opposite the first end; and the root portion, when sectioned in a plane perpendicular to the leading edge and trailing edge, has a profile asymmetrical with respect to a chord joining the leading edge and trailing edge.

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