Helicopter having means for the aerodynamic support of the...

Details Helicopter having means for the aerodynamic support of the... Helicopter having means for the aerodynamic support of the...

2009-03-17

2011-12-13

Collins, Timothy D (Department: 3644)

Aeronautics and astronautics

Aircraft, heavier-than-air

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

Reexamination Certificate

active

08074920

ABSTRACT:
A helicopter has at least one main rotor (2) situated on an airframe (1), on which a tail rotor (4) is additionally attached spaced apart from the airframe (1) via a tail boom (3) for torque equalization. The tail boom (3) is provided with elements for the aerodynamic support of the torque equalization, which include at least one auxiliary wing (5a,5b), extending along the tail boom (3) on the side facing away from the main rotor rotational direction, for flow acceleration of the exhaust air of the main rotor (2) passing this area.

REFERENCES:
patent: 4227665 (1980-10-01), Carlson et al.
patent: 4585391 (1986-04-01), Vuillet
patent: 4708305 (1987-11-01), Kelley et al.
patent: 5209430 (1993-05-01), Wilson et al.
patent: 6352220 (2002-03-01), Banks
patent: 9012671 (1990-11-01), None
patent: 69201690 (1995-09-01), None

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