关键词: 液体推进剂火箭发动机;动态特性;数学模型;验证

Abstract: Test data are used to verify the nonlinear mathematical model of dynamic characteristics of a pump fed liquid rocket engine The actual measurement error range of engine parameters were considered during the model verification The results of the model verification show that the deviation between the actual measurement and calculation results based on the nonlinear model of engine parameters being able to be measured is in ±7 1% The deviation is in the allowable range of engineering use

Key words: Liquid propellant rocket engine;Dynamic characteristics;Mathematical model;Verification