High-overload solid rocket engine and explosive type design method thereof

Abstract

The invention provides a high-overload solid rocket engine and a charge design method thereof.The high-overload solid rocket engine comprises a combustion chamber shell, an end socket arranged at one end of the combustion chamber shell and a spray pipe assembly arranged at the other end of the combustion chamber shell, the combustion chamber shell is filled with grains and a buffer pad, the buffer pad is provided with a through hole for ignition, and the through hole is communicated with the end socket. The hole diameter of the through hole is larger than that of a hole, communicated with the grain, of the spray pipe assembly, and the side, close to the spray pipe assembly, of the grain is concaved inwards to form a curved surface. The method has the effects that the probability of ignition failure in the prior art can be relatively reduced, and the problem that the structural integrity of the grain is damaged under the overload working condition can be relatively solved.

Description

technical field [0001] The invention relates to the technical field of solid rocket motors, in particular to a design method for high-overload solid rocket motors and drug types thereof. Background technique [0002] Solid rocket motor is a chemical rocket motor using solid propellant, and it is one of the important power systems of space vehicles such as missiles and rockets; among them, the charge inside the motor is the source of power to ensure the acceleration of the motor. For example: when the gun-launched missile is launched, the cannon is used to obtain a higher initial velocity, and the combustion of the charge is used to further accelerate the speed-increasing motor, so as to obtain a longer range than conventional solid rocket motors at a lower cost. The engine is subjected to high overload during the process of accelerating in the gun bore until it flies out of the gun bore. The force comes from the pressure generated by the ignition of the bottom row of gunpowd...

AI Technical Summary

Problems solved by technology

Therefore, in order to increase the load-bearing area of ​​the drug retainer, the size of the through hole on the drug retainer is reduced, that is, the ignition surface of the charge is reduced, thereby increasing the risk of ignition failure; at the same time, the charge is not covered by the drug retainer. The supporting part (ignition surface) will be squeezed into the through hole under the action of overload acceleration, and the charge near the through hole will generate a large shear force and cracks, and the structural integrity of the charge will be destroyed

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