Multiple starts of liquid oxygen kerosene engine with gas-driven precompression turbine and starting method

Abstract

The invention relates to a multiple-starting liquid oxygen kerosene engine of a gas driven preloading turbine. The multiple-starting liquid oxygen kerosene engine solves the problems that an oxygen-rich afterburning circulating liquid oxygen kerosene engine has no capacity of being started under low inlet pressure and can not being started for multiple times. The liquid oxygen kerosene engine comprises a gas system, a liquid oxygen system, a fuel supply system, an ignition agent supply system and a starting system. The ignition agent supply system comprises an ignition agent starting box, an ignition agent supply valve, a third one-way valve, a generator fuel valve and a fourth one-way valve. The generator fuel valve is a two-position three-way valve and comprises an inlet, an outlet A andan outlet B. The starting system comprises a high-pressure gas supply device, a high-pressure gas one-way valve, an oxygen preloading pump, an oxygen preloading turbine, a switching valve, a liquid oxygen one-way valve and a mixer. The ignition agent starting box of the liquid oxygen kerosene engine is relatively independent, an ignition agent is supplied to fuel gas generator and the thrust chamber for multiple times, and therefore the engine has the capacity of being started for multiple times.

Description

technical field [0001] The invention belongs to the field of liquid oxygen kerosene engines, and relates to a liquid oxygen kerosene engine and a starting method. Background technique [0002] The liquid oxygen kerosene engine is a high-performance, high-reliability liquid propulsion device. The starting energy is usually guaranteed by the tank pressure or driven by external energy; the ignition medium is provided for the gas generator and the thrust chamber by setting the igniter conduit; the corresponding valve is set to coordinate the coordinated work of each component. When used as a high-altitude multi-start propulsion device, the pressure of the oxidizer tank and fuel tank is usually very low, requiring the engine to have the ability to start under low inlet pressure conditions; in order to meet the needs of multiple starts, the engine needs to have multiple ignition capabilities. [0003] At present, there are two ways to start the engine, one is self-generated start...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the oxygen-enriched supplementary combustion cycle liquid oxygen kerosene engine does not have the ability to start under low inlet pressure conditions, and cannot be started multiple times, the present invention provides a gas-driven pre-compression turbine multiple start liquid oxygen kerosene engine and its starting method

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