General Dynamics Corporation, Convair Division

Lockheed Corporation

Jack E Jensen

Ebrahim Parekh

Jeffrey L Summers

Carbon/carbon materials are joined together by the placement of a brazing alloy between the materials to be joined applying a clamping pressure and passing an electric current through the parts and brazing alloy until the brazing.multidot.k15H alloy melts and when allowed to solidify forms a unitary structure from the parts.

Resistance brazed joints for carbon/carbon structures

The threaded split-bushing fastener assembly has been designed for high temperature applications such as on hypersonic vehicles. The fastener assembly consists of a pin (with a standard countersunk head at one end and a tapered end at the other end), a tubular threaded split-bushing, a nut, and a washer. Installation is accomplished by inserting the pin in the parts to be fastened, then slipping the washer and split-bushing on the tapered end of the pin and finally screwing the nut onto the split-bushing. Tightening of the nut allows preloading of the fastener assembly.

Threaded split-bushing fastener assembly

The tapered split-bushing fastener has been designed for high temperature applications. The fastener consists of a pin (with a standard countersunk head at one end and a tapered end at the other end), a split tapered bushing, a washer and a sleeve with an internal taper. Installation is accomplished by inserting the pin in the parts to be fastened, then slipping the washer and the split bushing on the tapered end and finally pushing the sleeve onto the split bushing. Pushing the sleeve causes the split-bushing to react against the washer and generate the fastener axial preload. A high temperature adhesive is then injected to lock the fastener in place.

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San Diego, CA, United States of America

Jack E Jensen