SOLID-FUEL ROCKET ENGINE Russian patent published in 1999 - IPC

FIELD: rocket engineering. SUBSTANCE: proposed solid-fuel rocket engine is designed for use in rocket equipment of multiple activation with thrust cut-off. It has housing 1, nozzle 29, charge 2, ignition unit 27, hydraulic extinguisher, differential piston 4 fixed by lock. Engine includes liquid coolant 7 located in space 5 under piston in pot 3. Differential piston has ducts 8 communicating space under piston to space of housing 1. Cradle 9 with holes 10 arranged opposite to ducts 8 is mounted on piston for rotation with reference to its longitudinal axis. Cradle is fitted with members 13 and 14 contacting in extreme positions of differential piston 4 guides 11 and 12 made in pot 3. Space under piston communicates through check valve 16 to tanks 17 with liquid coolant. Fixing lock is provided with return members 19. Design of engine with hydraulic extinguisher of multiple activation automatically returning to initial ( working ) position with minimal dimensions and mass of structure expands functional capabilities of engine. EFFECT: expanded functional capabilities of engine. 4 dwg