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Computational and experimental investigations of thermochemical resistance of carbon-ceramic composites in the combustion products of liquid rocket engine (LRE) are presented. The tests with model extensions made of the composite material (CM) were performed. The test time was about 200 s. The maximal temperature of the material ¦re surface was 1600 K. Physical and numerical model of silicon carbide destruction was developed.

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Measuring complex allowing diagnostics of heated-object thermal ¦elds with high resolution was developed. Numerical model was also developed for nozzle tests in vacuum chamber. The model allows simulating the main speci¦c features of the tests. A comparison is made between experimental and calculated results.