Powder fuel support plate ejection rocket-based combined cycle engine based on HAN unit propellant

Abstract

The invention relates to a support plate ejection rocket-based combined cycle power engine based on a unit propellant. The support plate ejection rocket-based combined cycle power engine comprises an air inlet channel, a central support plate single-component rocket, a powder fuel supply system, a nitric acid hydroxylamine-based propellant supply system, a high-pressure air source, a combustion chamber and a spray pipe. A nitric acid hydroxylamine single-component propellant which is good in normal-temperature storage performance and can be rapidly catalyzed and started at normal temperature is used as a propellant of a support plate rocket in an engine, the structure of a support plate rocket system is simplified, and the reliability of the engine is improved; the aluminum powder is adopted to replace traditional hydrocarbon fuel, the density specific impulse of the engine is improved, the fuel dissociation phenomenon in a scramjet mode is overcome, and the engine performance is maintained. According to the engine, mode conversion in a flight process is achieved by adjusting the flow of a nitric acid hydroxylamine-based propellant.

Description

technical field [0001] The invention belongs to the technical field of aerospace power, and relates to a powder fuel strut ejector rocket-based combined cycle engine based on HAN unit propellant. Background technique [0002] The rocket-based combined cycle power system is a propulsion system that combines rocket engines and ramjet engines. Its working process includes four modes: ejection mode, sub-combustion mode, supercombustion mode and rocket mode. Adjusting the working mode of the engine can give full play to the respective advantages of the rocket engine and the ramjet engine, so that the aircraft is always in the best thermal cycle state under different flight parameters, and has both high specific impulse and high thrust-to-weight ratio. [0003] The rocket-based combined cycle power system mainly realizes the mutual conversion between different modes by controlling the oxygen-fuel ratio of the launch rocket during the working process. At present, its propulsion sys...

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Problems solved by technology

[0005] In order to solve the problem that the fuel dissociation of the rocket-based combined cycle power system in the scramjet mode causes the performance of the engine to decrease, the present invention proposes a powder-fuel strut ejector rocket-based combined cycle based on a hydroxylamine nitrate-based (HAN) unit propellant The engine uses HAN monopropellant and aluminum powder as the fuel and oxidizer in the power system respectively, so as to realize the efficient application of powder fuel in the rocket-based combined cycle power system

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