Molding assembly for forming airfoil structures

Details Molding assembly for forming airfoil structures Molding assembly for forming airfoil structures

1994-08-01

1996-05-28

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Preform assembly means and means for bonding of plural...

249 96, 249134, 425403, 425470, B29C 4516

Patent

active

055205321

ABSTRACT:
A fiberglass or other material skin is applied to a composite airfoil structure in a mold assembly having a partially compliant caul plate component which defines the shape of the lower surface of the airfoil. The caul plate component includes a first portion which is essentially rigid and which covers the leading edge of the airfoil. The rigid portion of the caul plate component provides improved conformation of the airfoil skin to the leading edge of the airfoil. The caul plate component also includes a compliant portion which covers and defines the shape of the trailing edge of the lower surface of the airfoil. The stiffness of the caul plate component also has a variable stiffness zone which interconnects the rigid and compliant portions thereof. The use of rigid and compliant portions on the caul plate provides for a controlled conformance of the skin to the leading edge of the airfoil, while allowing the skin to accurately conform to the remainder of the airfoil in spite of variations in the dimensions of internal operating components of the airfoil.

REFERENCES:
patent: 5071338 (1991-12-01), Dublinski et al.
patent: 5087187 (1992-02-01), Simkulak et al.
patent: 5152949 (1992-10-01), Leoni et al.

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