Helicopter blade longitudinal member and relative manufacturing

Details Helicopter blade longitudinal member and relative manufacturing Helicopter blade longitudinal member and relative manufacturing

1984-10-16

1987-03-17

Croyle, Carlton R.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

416226, 416230, 264258, B21K 304, B23P 1502, B23P 1504

Patent

active

046505342

ABSTRACT:
There is disclosed a longitudinal member for a helicopter blade made by placing inside an open mold an open outer covering on which covering and in contact with are arranged a number of uncured axial straps which define top and bottom backs of the longitudinal member itself; the straps being compacted, prior to closure of the mold, against a center core and a front nose by inserting a rear element made of prehardened synthetic composite material, the rear element having an essentially C-shaped section and the opposite side edges of the outer covering being folded thereover prior to closure of the mold.

REFERENCES:
patent: 3754840 (1973-08-01), Zincone
patent: 3873654 (1975-03-01), Smith
patent: 3967996 (1976-07-01), Kamov et al.
patent: 4188171 (1980-02-01), Baskin
patent: 4247348 (1981-01-01), Lischer
patent: 4298417 (1981-11-01), Euler et al.
patent: 4299540 (1981-11-01), Covington et al.
patent: 4379013 (1983-04-01), Tambussi
patent: 4470862 (1984-09-01), More et al.

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