FIELD: motors and pumps.
SUBSTANCE: invention is related to solid-propellant rocket engines. Solid-propellant rocket engine comprises body, igniter, nozzle bottom with multiple nozzles installed along circumference, and channel solid fuel charge rigidly fixed to body. Charge has channel turning into slot part with multiple slot cuts, every of which faces nozzle bottom and is arranged with section that expands to charge end. Length of expanding section makes 1.5-1.7 of nozzle critical section diameter, and width of this section at the end of charge makes 0.9-1.1 of nozzle critical section diameter. Number of slot cuts is equal to number of nozzles, axes of which are located in symmetry planes of slot cuts that pass through axis of rocket engine.
EFFECT: increase of solid-propellant rocket engine efficiency by increase of reliability and its maximum impulse for extension of rocket flight range.
2 dwg
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