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Numerical study of pipeline distribution effect on the performance of pasty propellant rocket motor - EurekAlert
In recent years, the development of missiles and other near-space vehicles has put forward higher requirements for the energy characteristics, safety and variable thrust capability of rocket motors. To improve the thrust regulation performance of rocket motors, the concept of pasty propellant rocket motor (PPRM) has been proposed at home and abroad, and extensive research has been carried out. However, most of the existing reported studies in the literature are limited to the zero-dimensional internal ballistic simulation of PPRM, and less work has been done in the combustion flow simulation. In addition, since PPRM contains a pipeline feed system, the propellant distribution and the combustion flow present typical 3-dimensional characteristics, and the combustion surface has a strong relationship with the pipeline distribution; it is of great need to couple the model of the propellant feed system into the simulation to consider the influence of the pipeline distribution when studying the combustion flow characteristics. In a research article recently published in Space: Science & Technology, a team led by professor Weizong Wang from Beihang University develop a 3-dimensional multi-physical CFD model of PPRM coupling the pipeline simulation module for the first time based on the conical burning surface theory. Their results will help guide the design of the high-performance feed system and combustion chamber of PPRM.
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