Helicopter blade structure

Details Helicopter blade structure Helicopter blade structure

1974-05-16

1978-10-17

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Formed with main spar

416230, B64C 2748

Patent

active

041206100

ABSTRACT:
A helicopter main rotor blade having a metallic nose spar extending the length of the leading edge of the blade and a trailing edge skin attached to the nose spar. A closure channel fixed within the nose spar extends the length thereof with unidirectional fiberglass material fixed to and extending along the length of the closure channel. A bushing on the inboard end of the blade preferably is attached both to the nose spar and the fiberglass bands for transfer of centrifugal forces in the blade to a grip.

REFERENCES:
patent: 3237697 (1966-03-01), Ford et al.
patent: 3333642 (1967-08-01), Kee
patent: 3476484 (1969-11-01), Brunsch
patent: 3528753 (1970-09-01), Dutton et al.
patent: 3533714 (1970-10-01), Pfleiderer
patent: 3552881 (1971-01-01), Rogers et al.
patent: 3713751 (1973-01-01), Fradenburgh et al.
patent: 3754840 (1973-08-01), Zincone
patent: 3782856 (1974-01-01), Salkind et al.

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