介绍了目前普遍应用的几种环境温度模型,在分析实测环境温度变化规律的基础上,提出了基于实测数据的偏态分布环境温度模型,给出了模型数学表达式及相关计算参数。与实测数据进行对比,分析了偏态分布温度模型与Heller模型的不同。分析结果表明,偏态分布模型可以用于研究固体火箭发动机使用过程中由外界环境引起的热应力应变。 Several commonly used ambient temperature models are introduced. Based on the analysis of the measured ambient temperature variation, a skewed ambient temperature model based on measured data is proposed. Mathematical expressions of the model and related calculation parameters are given. Compared with the measured data, the difference between skewed distribution temperature model and Heller model is analyzed. The analysis results show that the skewed distribution model can be used to study the thermal stress and strain caused by the external environment during the use of solid rocket motor.