Miniature solid rocket engine

Abstract

The invention discloses a miniature solid rocket engine which structurally comprises four parts: a spray pipe layer, an ignition resistor wire, a combustion chamber layer and an end cover layer, wherein the spray pipe layer is bonded with the combustion chamber layer; the ignition resistor wire is bonded with the spray pipe layer; the combustion chamber layer is bonded with the end cover layer; the spray pipe layer, the combustion chamber layer and the end cover layer are all made of silicon wafers through the MEMS (Micro Electro Mechanical System) technique; and a plurality of miniature solid rocket engines formed by the components are integrated on a chip. The miniature solid rocket engine is relatively simple in structure; the spray pipe is an inseparable whole body and is low in technical requirement and easy to process; and the miniature solid rocket engine is convenient to install and operate and has big total impulse.

Description

technical field [0001] The present invention relates to a rocket motor, in particular to a miniature solid rocket motor, which belongs to the technical field of solid rocket motors and is applied to orbit adjustment, gravity compensation, position maintenance, orbit maneuvering and attitude control of miniature spacecraft . Background technique [0002] Micro solid rocket motor is a kind of solid propellant micro thruster based on MEMS technology and other fine processing technology, which is suitable for precise positioning and attitude control of micro spacecraft. Compared with liquid chemical thrusters, solid propellants are stored under normal pressure conditions, so that solid propellant thrusters can save complicated systems such as storage tanks, supply lines, and microvalves. At the same time, it also facilitates miniaturization of solid propellant thrusters using micro-manufacturing technologies such as MEMS. In view of the poor repeatability of solid propellant t...

AI Technical Summary

Problems solved by technology

[0004] 1) The size of the nozzle is small, and it must be divided into 3 layers, the structure is complex, and the process requirements are high

[0005] 2) The igniter is installed in the throat of the micro-engine, which is difficult to install, and it is difficult to lead out the lead wire of the ignition resistance wire

[0006] 3) The throat diameter of the micro engine is small, which makes the alignment and bonding process of the top plate and the middle plate more complicated

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