A solid rocket motor for electromagnetic ejection

Abstract

The invention discloses a solid rocket engine for electromagnetic launch. The engine comprises a combustion chamber shell, an outer heat-proof layer, an ignition device, a propellant grain and a spraypipe, wherein the propellant grain comprises a grain body, a front umbrella, an inner hole and a rear wing, wherein the inner hole penetrating through the grain body is formed in the grain body, thefront umbrella is an annular groove formed by sinking the inner wall of the grain body in the circumferential direction, and the rear wing is formed by sinking the inner wall of the grain body. According to the solid rocket engine, the front umbrella, the inner hole and the rear wing are arranged in the propellant grain, and the ignition device coated with flame-retardant material is arranged so that in the working process of the engine, the waveform of gas sound energy in a combustion chamber can be disturbed, the sound energy is dispersed, part of the sound energy is absorbed, sound waves ofthe sound energy cannot be gathered to form strong waves, the phenomenon that the sound energy is gathered to a certain extent to form resonance with the combustion chamber shell and trigger the unstable combustion is prevented, the effect of inhibiting the unstable combustion is achieved, and the stable work of the solid rocket engine is guaranteed.

Description

technical field [0001] The invention relates to the technical field of solid rocket motors, in particular to a solid rocket motor for electromagnetic ejection. Background technique [0002] Electromagnetic catapult technology is an emerging linear propulsion technology, which is suitable for launching large loads in short strokes, and has broad application prospects in military, civil and industrial fields. Electromagnetic ejection is to use electromagnetic energy to push the ejected object to move outward, which is actually a form of electromagnetic gun. The ejection used in the past has mechanical ejection, such as spring, rubber band and so on. Energy ejection such as: bullets (using gunpowder to burst energy instantly), maglev trains, etc. [0003] Solid rocket motors have the advantages of simple use, good safety, good storage performance, and convenient maintenance, making them widely used in the field of electromagnetic ejection. Generally, since the diameter of th...

AI Technical Summary

Problems solved by technology

The aspect ratio of the propellant grain of the solid rocket motor with a large aspect ratio is also large. When the propellant grain is burning, it is prone to unstable combustion. Once the unstable combustion occurs, it will cause the solid rocket motor to work abnormally. Leading to the failure of the flight mission will bring great losses

Images