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

FIELD: rocketry. SUBSTANCE: engine includes combustion chamber with insertion charge and device holding it in chamber. Charge is located in additional chamber provided with bottom and nozzle diaphragms. Near-bottom cavity formed between bottom diaphragm and bottom of combustion chamber is connected with before-nozzle volume by means of passage. Section area of passage exceeds total area of holes of bottom diaphragm. Passage connecting the near-bottom cavity and before-nozzle volume may be made in additional chamber or may be formed by inner surface of combustion chamber and outer surface of additional chamber. Force created by gas-dynamic pressure differential is equal to force of rocket acceleration; this force provides for balancing charge in chamber. EFFECT: enhanced power efficiency of engine without destruction of change on diaphragm. 3 cl, 2 dwg