WALL FOR HOT FLUID STREAMS

摘要

The disclosure of this invention pertains to a heat shield for jet pipes in gas turbine engines. The heat shield comprises a sheet of heat-resisting alloy having flat portions joined by parallel folds and wherein both the flat portions and the folds are formed into corrugations extending at right angles to the folds. In this way the heat shield is two-dimensionally expansible to accommodate differential expansion between the shield and a support structure to which the shield is secured. The shield is impermeable so that cooling air at the "cold" side of the shield may be of lesser pressure than the hot gases in the jet pipe.