Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1984-02-13
1986-06-17
Rosenbaum, Mark
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
291568B, 291568H, 29418, 29448, 29463, 29DIG16, 415208, 416229A, B23P 1504
Patent
active
045947619
ABSTRACT:
A hollow composite airfoil with an integral internal support rib of fluoroelastomer rubber is formed by bracketing the rib between two silicone rubber mandrels to form a core assembly having a desired aerodynamic shape, then building up on opposite sides of the core assembly separate stacks of laminae of a composite material of graphite (or carbon) and glass fibers impregnated with an epoxy resin, with the two stacks overlapping adjacent to the leading and trailing edges of the core assembly. Heat and pressure are then applied to the core assembly with the laminae thereon to bond together the laminae of each stack, then to bond the two stacks together along the overlapping portions thereof and to bond the two stacks to the rib to form a continuous shell around the core assembly. The mandrels are then removed. One open end of the resulting hollow airfoil is plugged and that end is inserted into a recess in a mounting platform with a predetermined clearance space therebetween. An elastomeric material is then injected into the clearance space for filling it, the elastomer then being cured to bond the platform to the airfoil. A polyurethane sheath is wrapped around the airfoil and cured. Airfoils with plural ribs are also disclosed.
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AIAA-81-1356 "Processing for an Improved Impact Resistant Composite Blade" by G. C. Murphy--AIAA/SAE/ASME 17th Joint Propulsion Conference--Jul. 27-29, 1981 (Title thru 7 pages).
Jones Jackie D.
Murphy Guy C.
Salemme Charles T.
General Electric Company
Lawrence Derek P.
Rosenbaum Mark
Strunck Stephen S.
Wallace Ronald S.
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