Liquid-propellant rocket engine injector integrated with electric igniter

Abstract

The invention discloses a liquid-propellant rocket engine injector integrated with an electric igniter. The liquid-propellant rocket engine injector comprises a bottom plate, an outer barrel, fuel nozzles, oxidizing agent nozzles, a top cover and an igniter plug; the outer barrel is connected with the top cover and provided with a center shaft, and the center shaft is connected with the barrel wall of the outer barrel through an annular transverse plate; an inner cavity of the outer barrel is divided into an upper cavity and a lower cavity through the annular transverse plate; the side wall ofthe lower cavity is provided with fuel through holes, and the bottom of the lower cavity is connected with the bottom plate; the bottom plate is uniformly provided with a plurality of fuel nozzle fixing holes, the annular transverse plate is uniformly provided with a plurality of oxidizing agent nozzle fixing holes, the oxidizing agent nozzle fixing holes correspond to the fuel nozzle fixing holes one by one, and each fuel nozzle and the corresponding oxidizing agent nozzle are connected between each pair of fuel nozzle fixing hole and oxidizing agent nozzle fixing hole in a matched mode; theposition, in the upper cavity, of side wall of the center shaft is uniformly provided with oxidizing agent through holes, and the position, in the lower cavity, of side wall of the center shaft is uniformly provided with a set of upper fuel through holes and a set of lower fuel through holes. The liquid-propellant rocket engine injector is suitable for a double-component liquid-propellant rocketengine, the electric igniter and the injector are combined into a whole, and system simplified design is achieved.

Description

Technical field: [0001] The invention relates to a liquid rocket engine injector integrating an electric igniter. Background technique: [0002] The development direction of the rocket engine is to simplify the structure to improve the reliability of the engine while ensuring the performance of the engine. [0003] The injector of a traditional rocket engine is responsible for organizing the mixing of oxidant and fuel. As a component, the electric igniter is fixed on the injector by bolts or welding. The ignition hole ignites the oxidant and fuel. [0004] The electric igniter of a traditional rocket engine is an independent component, which is usually composed of several parts connected by bolts and welding. The separately supplied oxidizer and fuel are ignited by the electric nozzle to form a torch to achieve high-energy ignition. The oxidant and fuel require Additional pipelines and valves are used for control, and the structure is relatively complicated. [0005] In a...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a liquid rocket engine injector that integrates an electric igniter in order to solve the problem that the existing electric igniter has a complex structure, oxidant and fuel need to be supplied separately, and cannot work reliably for a long time

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