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针对变容积半密闭增压装置内压力走时过程,采用理论建模和试验研究相结合的方法进行分析.首先选取合理的双基推进剂,分析双基推进剂的燃烧机理,建立瞬时燃烧模型;然后建立变容积半密闭装置运动的数学模型,通过理论分析得到装置的推动力、展开时间等必要参数;根据理论计算结果加工出试验模型,自行设计了试验方案,采用高速摄影的研究方法观察该装置在不同时刻的运动状况,并将试验实测结果与理论模型计算结果进行对比.试验结果表明:依靠双基推进剂燃烧后产生的气体作为变容积半密闭增压装置驱动力的可靠性和安全性,试验装置的展开时间与理论计算结果基本一致.
Aiming at the process of pressure variation in a semi-hermetic supercharger with variable volume, theoretical modeling and experimental research are used to analyze the process.Firstly, a reasonable double base propellant is selected to analyze the combustion mechanism of double base propellant and to establish an instantaneous combustion model. Then the mathematical model of the motion of variable volume semi-airtight device is established. The necessary parameters such as the driving force and deployment time of the device are obtained through theoretical analysis. The experimental model is processed according to the theoretical calculation results, and the experimental scheme is designed. The high-speed photography research method is used to observe the The experimental results show that the reliability and safety of the driving force depend on the gas generated from the combustion of the double-base propellant as a variable-volume semi-hermetic supercharger The test device deployment time and theoretical calculation results are basically the same.