Twist element for a bearingless rotor

Details Twist element for a bearingless rotor Twist element for a bearingless rotor

2007-11-20

2007-11-20

Nguyen, Ninh H. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Nonmetallic resilient mounting

C416S135000

Reexamination Certificate

active

10551007

ABSTRACT:
A twist element for a bearingless rotor is made mostly of composite fiber material and has a cross section with a substantially symmetric, flattened shape that has approximately the contour of a horizontal, central section of a double cone. In addition, a bearingless rotor having at least one such twist element, and a rotorcraft, particularly a helicopter, having at least one rotor with at least one such twist element are provided.

REFERENCES:
patent: 4650401 (1987-03-01), Yao et al.
patent: 4892461 (1990-01-01), Matsumoto et al.
patent: 5358381 (1994-10-01), Covington et al.
patent: 6805948 (2004-10-01), Yasui
patent: 29 17 301 (1980-10-01), None
patent: 0 323 857 (1989-07-01), None
patent: 2 608 554 (1988-06-01), None

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