Helicopter rotor flexbeam

Details Helicopter rotor flexbeam Helicopter rotor flexbeam

1987-04-27

1988-12-20

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Nonmetallic resilient mounting

416138, 416141, B64C 2738

Patent

active

047922800

ABSTRACT:
An improved helicopter rotor flexbeam (20) comprises a pair of generally parallel outwardly open, cross-sectionally C-shaped beams (25) of a geometry which defines therein a first inboard region (A) of enhanced out-of-plane flexibility and a second outboard region (B) of enhanced in-plane and torsional flexibility.

REFERENCES:
patent: 2757745 (1956-08-01), Verhage et al.
patent: 3999886 (1976-12-01), Ormiston et al.
patent: 4028003 (1977-06-01), Krauss
patent: 4111605 (1978-09-01), Roman et al.
patent: 4266912 (1981-05-01), Roman
patent: 4306837 (1981-12-01), Brogdon et al.
patent: 4419051 (1983-12-01), De Rosa
patent: 4466774 (1984-08-01), Cycon et al.
patent: 4616977 (1986-10-01), Schramm
patent: 4645423 (1987-02-01), Ferris et al.

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