Process for manufacturing a blade

Details Process for manufacturing a blade Process for manufacturing a blade

1989-09-15

1991-02-05

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 2988971, 298896, 416226, 416230, 416239, 416241A, B29C 4320

Patent

active

049902059

ABSTRACT:
The blade of composite materials and its manufacturing process according to the invention are such that the spar includes at least one bundle (10a, 10b) extending longitudinally in the shell (4), between the fillings of the leading edge (12a) and the trailing edge (12c) and which adheres directly to the laminated pressure face and suction face coverings, (4a, 4b) of the rigid shell (4).
Beyond the blade footing (3), the spar is shaped to form a root loop flexible in torsion (8) and passing round an attaching socket (9) on the hub.
Application to variable pitch multi-blade propellers for the streamlined tail rotors of helicopters.

REFERENCES:
patent: 4298417 (1981-11-01), Euler et al.
patent: 4470862 (1984-09-01), More et al.
patent: 4639284 (1987-01-01), Mouille et al.
patent: 4648921 (1987-03-01), Nutter

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