Solid rocket engine without spray pipe

Abstract

The invention discloses a spray-pipe-free solid rocket engine which comprises a shell, a columnar propellant grain, a fuel gas channel and a supporting pipe. An inner cavity of the shell is filled with the propellant grain, and the fuel gas channel and the supporting pipe are arranged along the middle line of the propellant grain, are cylindrical, are arranged in the fuel gas channel in a sleevedmode and are close to a fuel gas flow outlet. A plurality of inner cavity electromagnetic field mechanisms and a plurality of inner cavity high-voltage thermoelectric mechanisms are sequentially arranged on the inner wall of the supporting pipe at intervals, and the inner cavity electromagnetic field mechanisms and the inner cavity high-voltage thermoelectric mechanisms are matched with one another to be used for generating millivolt-level thermoelectric potential due to the thermoelectric effect when fuel gas passes through a fuel gas channel of an inner cavity of the supporting pipe, and then high-voltage thermoelectric potential is formed. The fuel gas containing a large number of ionization products is greatly accelerated through the thermoelectric potential and is discharged through the inner cavity of the supporting pipe to push the rocket to operate; A spray pipe structural part of a conventional solid rocket engine is omitted, the structural weight of the engine is greatly reduced, and the probability of failure faults is reduced.

Description

technical field [0001] The invention belongs to the field of aerospace power, in particular to a nozzleless solid rocket motor. Background technique [0002] Solid Rocket Motor: A chemical rocket motor that uses solid propellants. Also known as solid propellant rocket motor. After the solid propellant is ignited, it burns in the combustion chamber, and the chemical energy is converted into heat energy to produce high temperature and high pressure combustion products. Combustion products flow through the nozzle, where they expand and accelerate, heat energy is converted into kinetic energy, and are discharged from the nozzle at high speed to generate thrust. [0003] Since the birth of the solid rocket motor, its basic structural form has always been "combustion chamber + Laval nozzle". The gas generated by the combustion of solid propellant is continuously accelerated in the nozzle and discharged from the engine, thereby generating thrust. In order to ensure high energy c...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a nozzleless solid rocket motor to solve the problem that the outlet velocity of the combustion product of the existing solid rocket motor is limited

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