以某泵压式液体火箭发动机为研究对象，用试车数据对发动机静特性数学模型进行了验证，在验证模型时既考虑了外部干扰因素的实际测量误差范围和内部干扰因素的实际变化范围，又考虑了发动机参数实测量的误差范围，并且使用了随机仿真的方法。验证结果表明，发动机静特性的非线性数学模型是足够准确的，所用的计算方法是合理的。 Taking a pump-pressured liquid propellant rocket engine as the research object, the mathematical model of the static characteristic of the engine is verified by the test data. The actual measurement error range of the external disturbance factor and the actual variation range of the internal disturbance factor are taken into account when verifying the model. The measured error range of the engine parameters was taken into account and a random simulation method was used. The verification results show that the nonlinear mathematical model of the static characteristics of the engine is sufficiently accurate and the calculation method used is reasonable.