Research/Patents/US 5378109
US 5378109

CO-CURED COMPOSITE FAN BLADE AND METHOD

Assignee

BOEING COMPANY, THE A CORP. OF DELAWARE

Filed

Aug 28, 1991

Granted

Jan 3, 1995

Location

EDGMONT PA US

Abstract

This invention relates to an aerodynamic blade assembly and method by which the blade is formed in a single cure cycle. A foam core having an aerodynamic shape is provided on which an inner spar wrap member, an upper spar pack member, a lower spar pack member, a lower outer spar wrap member, an upper outer spar wrap member, a leading edge block and a trailing edge wedge are laid-up from fiber-reinforced composite material. The total lay-up assembly with the core is placed in a mold tool and the tool heated to thereby cure and structuralize the total lay-up assembly to form the blade.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Apr 9, 1992

Rescinded

Dec 1, 1992

Duration

7 months

Inventor

  • 1ARTHUR J. LALLO

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records