TURBINE BLADE HEAT PROTECTION METHOD Russian patent published in 1997 - IPC

FIELD: gas-turbine engines. SUBSTANCE: method involves covering metal rod of blade feather with ceramic coat. Novelty is that placed between ceramic coat and metal rod of feather is screen of unidirectional ceramic fibers hooked on unidirectional metal fins for their displacement relative to metal fins at their contact point, for example, for sliding. Metal fins are secured on feather rod so that points of fixation and hooking along fin are alternating; coat is fastened with hooked ceramic fibers. Metal fins are arranged across feather rod. Used as metal fin is wire. Loose hooking is made by winding ceramic fiber on wire. Winding is sectionalized and sections form loose points along wire with gaps used as points for fixing wire on feather rod. Wire is placed on rod by sequential fixation of intersection gaps with aid of resistance welding. EFFECT: improved heat resistance of turbine blade. 5 cl, 8 dwg