METHOD OF CONDUCTING STAND TESTS OF ROCKET CATAPULT UNIT Russian patent published in 2006 - IPC F41A23/16 F41F3/04 F42B35/00 

FIELD: methods of testing catapult units for launching rockets.

SUBSTANCE: proposed method consists in placing the weight and overall dimension mock-up of rocket on horizontal guides of jig secured on test stand platform and piston-type catapult unit with solid propellant gas generator placed between and under jig guides. Acceleration of said mock-up is performed by means of catch brought in contact with its rear bottom and rigidly connected with moving piston of catapult unit. Jettisoning of rocket mock-up is carried out directly from horizontal guides of jig. Provision is made for barrier (made from sand, for example) beyond boundaries of jig for catching the rocket mock-up of length "l" which is out of gauge; barrier is made at distance ≤l from point of mock-up takeoff from horizontal guides of jig. Barrier length L= (3-4)l at height of H≥2h, where h is height of mounting of mock-up by its axis on jig horizontal guides. Wooden shield or timber bulkheads are mounted in barrier at distance of (0.5-0.9)L in way of motion of mock-up; barrier is bounded transversely by rigid side walls. Jig, rocket mock-up and piston-type catapult unit are provided with sensors for recording takeoff speed of mock-up, axial load factor of mock-up and pressure of combustion products of solid propellant gas generator in under-piston space of catapult unit.

EFFECT: enhanced informative capacity of stand tests of catapult units; reduction of testing time.

3 cl, 1 dwg