Solid-and-liquid attitude-control rocket engine

Abstract

The invention discloses a solid-and-liquid attitude-control rocket engine. The solid-and-liquid attitude-control rocket engine comprises an oxidizing agent conveying system, a direct-action solenoid valve, a honeycomb-type catalytic bed, a combustion chamber and a spraying pipe, wherein the conveying system is used for supplying hydrogen peroxide by adopting a nitrogen extrusion mode; the supplying amount of the hydrogen peroxide is controlled by the direct-action solenoid valve, so that rapid response of the solid-and-liquid attitude-control rocket engine can be realized; the honeycomb-type catalytic bed is adopted for catalyzing, and an oxidizing agent is resolved to generate high-temperature oxygen which enters the combustion chamber through a spraying and jetting panel; and six passages are formed in the middle part of an end-burning grain, and the high-temperature oxygen reaches a grain section through the above passages and generates action with 1-3 butadiene which is a product of decomposition of HTPB, so that the engine starts to work. According to the solid-and-liquid attitude-control rocket engine, double-mode work is adopted, and the advantages of a single-unit attitude-control rocket engine of simple structure and high reliability and the advantages of a double-unit attitude-control rocket engine of high specific impulse and rapid switching-on and switching-off are combined; besides, the structure is simple; cost is low; safety is high; and the solid-and-liquid attitude-control rocket engine is environment-friendly.

Description

technical field [0001] The invention belongs to the field of rocket engine design, and relates to a rocket engine, specifically a solid-liquid attitude control rocket engine, which is used as an auxiliary power system to control the attitude of a spacecraft. Background technique [0002] The solid-liquid rocket motor adopts liquid oxidant and solid fuel, and has the common characteristics of both liquid rocket motor and solid rocket motor in structure. It has good safety, easy thrust adjustment, good grain stability, good environmental protection, easy shutdown and restart. It can be used in sounding rockets, attitude control engines, variable thrust engines, etc. [0003] At the same time, solid-liquid rocket engines also have the disadvantages of low packing density, low combustion efficiency, and changes in the oxygen-fuel ratio. [0004] Hydrogen peroxide is used as an oxidant for solid-liquid rocket engines. It has the advantages of non-toxic, non-polluting, high densi...

AI Technical Summary

Problems solved by technology

Among them, the ignition safety of the solid medicine box is poor, and the medicine box needs to be protected from heat in the front combustion chamber, and the metal part of the medicine box is easy to fall off, causing potential danger to the nozzle; the ignition system for inhaling spontaneous combustion oxidant is complicated, and an additional oxidant supply system is required; the ignition engine Ignition is prone to ignition overpressure, and the temperature is too high during ignition

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