Rotor system with pitch flap coupling

Details Rotor system with pitch flap coupling Rotor system with pitch flap coupling

2006-11-15

2010-11-30

Nguyen, Ninh H (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Method of operation

C416S024000

Reexamination Certificate

active

07841829

ABSTRACT:
An articulated rotor system with a servo-flap rotor control system locates the focal point of a blade retention spherical elastomeric bearing inboard of a joint in the servo-flap pitch control tube which separates the flap hinge and supports the servo-flap pitch control tube on a single pivot bearing within a blade retention spindle. Rotor blade flapping produces relative movements between the servo-flap pitch control tube and the blade retention spindle which is converted through a servo-flap drive linkage into servo-flap pitch motions to provide flap/pitch coupling which reduces steady and transient blade flapping.

REFERENCES:
patent: 4231705 (1980-11-01), Watson
patent: 4235570 (1980-11-01), Ferris et al.
patent: 4304525 (1981-12-01), Mouille
patent: 6050778 (2000-04-01), McArdle et al.
patent: 6695253 (2004-02-01), Romani et al.
International Search Report and Written Opinion dated Oct. 10, 2008.

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