TESTING METHOD AND DEVICE OF SOLID-PROPELLANT ROCKET ENGINE

摘要

FIELD: engines and pumps.;SUBSTANCE: testing method of solid-propellant rocket engine involves installation of self-contained engine on the base so that it is borne against rigid wall, starting, measurement of operating parameters and determination of operability of engine housing. After engine starting the partial or full shutoff of critical section of its nozzle is performed, which leads to destruction of engine housing. During measurements there recorded are pressure values of fuel combustion products in engine chamber prior to full or partial shutoff of critical section of nozzle and values of the pressure at which the housing was destructed; and as per the above values the safety factor of engine housing is determined. Testing device of rocket engine includes the base, rigid wall and blind telescopic shaft. The latter is installed onto the base coaxially to rocket engine with possibility of extension of movement of movable part of the shaft into rocket engine nozzle. On front end of movable part of shaft there fixed is plug; propellant charge is arranged in its cavity on the side of closed end, and pyrocartridge is installed on closed end.;EFFECT: inventions allow improving accuracy of determination of safety factor of rocket engine.;2 cl, 1 dwg