Abstract

A novel differential pressurization pulse jet engine is suggested in this paper. Working process of the engine is firstly introduced, then several realistic assumptions are made, physical model and mathematical model of the engine's extrusion and filling process are built. Using Propane as fuel, the mathematical model can be solved by setting some parameters. Working characteristics of the engine in each stage are analysed, and performance parameters of the engine is estimated, such as pressure, thrust, and specific impulse. Through suitably changing several structure parameters, analysing the performance parameters, the impacts of structural parameters on the engine performance are discussed. Finally, compared with conventional pulse jet engines, this engine provides an approach to pressurize and has a higher ratio.

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