液体火箭发动机动态特性数学模型的验证

VERIFICATION OF MATHEMATICAL MODEL OF DYNAMIC CHARACTERISTICS FOR LIQUID ROCKET ENGINE

用试车数据检验某泵压液体火箭发动机动态特性非线性数学模型的准确度，考虑了发动机参数实际测量的误差范围。计算结果表明：在整个过渡过程中，所有可以实际测量的发动机参数的计算值与实测值之间的偏差均在±７．１％以内。

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