Small solid rocket engine

Abstract

The invention provides a small solid rocket engine, and relates to the technical field of rocket engines. A grain and a spray pipe in a combustion chamber are improved. The grain is divided into an oxidizing agent layer and a gunpowder layer, unstable and unsafe elements of the mixed grain can be effectively prevented by leading the grain into a gas channel through oxidizing agent holes and gunpowder holes, meanwhile, the oxidizing agent layer is arranged to play a certain thermal protection role on a combustion chamber shell, the oxidizing agent holes and the gunpowder holes are spirally andevenly arranged, the combustion process can be effectively controlled, staged combustion and complete combustion are achieved, and the combustion performance of the combustion chamber is improved. Inaddition, a rotatable flexible joint and a single-face expansion type spray pipe are designed at the engine spray pipe, the radial direction speed can be effectively controlled while the leakproofnessand the rotating stability of the spray pipe are guaranteed, vector control over the engine is achieved, and therefore the control over the launching range and direction of the engine is improved.

Description

Technical field[0001]The invention belongs to the technical field of rocket engines, and particularly relates to a small solid rocket engine.Background technique[0002]The solid rocket motor is a chemical rocket motor that uses solid matter (energy and working fluid) as a propellant. The solid propellant is ignited and burned in the combustion chamber to produce high-temperature and high-pressure gas, which converts chemical energy into heat energy; the gas expands and accelerates through the nozzle, and the heat energy is converted into kinetic energy, which is discharged from the nozzle at a very high speed to generate thrust. Before flying. The solid rocket engine is the power unit of various weapons, and it is also widely used in the aerospace field. Its structure is relatively simple, has the advantages of mobility, reliability and easier maintenance, which greatly meets the requirements of modern warfare and aerospace industry.[0003]However, the solid propellant will be affecte...

AI Technical Summary

Problems solved by technology

These two defects will appear "super" combustion surface during its combustion, which will cause a major threat. Therefore, optimizing the structure of the internal grain of the combustion chamber and improving the performance of the nozzle are very necessary for the performance and development of solid rocket motors

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