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建立了再入体再入大气层形成的尾迹的工程模型，并运用边界层理论求解二维等压湍流尾迹流动。根据Ｐｒａｎｄｔｌ的湍流切应力的混合长度理论和Ｔａｙ－ｌｏｒ的涡量交换理论分别获得速度分布和温度分布，根据Ｌｙｋｏｕｄｉｓ的远场尾迹理论计算了轴心参数分布，并且获得了尾迹长度、自由电子数密度等尾迹参数。计算结果与同类文献一致。文章的目的是为计算尾迹的雷达散射截面提供初始参数。
The engineering model of the wake formed after the reentry into the atmosphere is established, and the boundary layer theory is used to solve the flow of the two-dimensional isobaric turbulent wake. According to Prandtl’s turbulent shear mixing length theory and Tay-lor’s vorticity exchange theory, the velocity distribution and temperature distribution are obtained respectively. According to Lykoudis’ far-field wake theory, the axial distribution of parameters is calculated and the length of the wake, the number of free electrons Density and other wake parameters. The calculation results are in accordance with similar literature. The purpose of this paper is to provide initial parameters for calculating the radar cross section of the wake.