Multi-component simulation engine and its ignition scheme applied to the experimental study of vacuum plume effect

Abstract

The invention discloses a multi-component simulative engine applied to vacuum plume effect experimental research and an ignition scheme thereof. The multi-component simulative engine comprises a pre-combustion chamber head part, a pre-combustion oxygen supplementation chamber, a thrust chamber head part and a thrust chamber body part, wherein the pre-combustion chamber head part is tightly connected with the pre-combustion oxygen supplementation chamber, and the pre-combustion oxygen supplementation chamber, the thrust chamber head part and the thrust chamber body part are connected tightly and sequentially. The ignition scheme comprises working medium input, ignition time sequence and pre-combustion chamber capacity design. According to the invention, a propellant working medium is input through an ignition incendiary agent welding nozzle, an ignition oxidant welding nozzle and an oxygenating agent welding nozzle, and simulation of combustion products of different real engines can be realized by matching different incendiary agents, oxidants and other gases.

Description

technical field [0001] The invention relates to a multi-component simulated engine and its ignition scheme applied to the experimental research of vacuum plume effect, belonging to the technical field of engine design. Background technique [0002] When the space chemical propulsion engine ignites and works in a vacuum environment, it will produce a high-temperature and high-speed jet in the shape of a feather, called a plume. The plume will produce aerodynamic effects, aerothermal effects, pollution effects, electromagnetic effects, etc. on the spacecraft, collectively referred to as the vacuum plume effect, which will bring adverse consequences to the normal operation of the spacecraft. Therefore, it is necessary to study the vacuum plume effect, and then optimize the scheme and rational layout in the design process of the spacecraft, so as to reduce the adverse effects of the vacuum plume effect on the spacecraft. [0003] The research of vacuum plume effect includes num...

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Problems solved by technology

Real engines generally use expensive metal materials with high melting points for processing, and use methods such as ablation and cooling for thermal protection. The thermal protection method is more complicated

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