研究高超声速旋成体表面防热的发汗冷却控制系统，除去得到与平面情形相当的临界发汗通量之外，还得出另一个较小的第二临界发汗通量．当发汗通量介于这两个临界发汗通量之间时，表面虽将出现烧蚀，但烧蚀会自动停止，留有剩余厚度．还进行了数值模拟，给出各种特性曲线；详细讨论了对热层表面烧蚀控制的三种方式：表面温度的控制、表面烧蚀量的控制和表面烧蚀开始时间的控制，给出控制变量选取的准则． In addition to obtaining a critical sweat flux comparable to a planar one, a second, smaller critical sweat flux is derived from the study of the sweat cooling control system for hyperthermic rotating body surfaces. When the sweat flux is between these two critical sweat fluxes, ablation will occur on the surface, but ablation will stop automatically leaving the remaining thickness. Numerical simulations were also performed to show various characteristic curves. Three methods for controlling ablation on the surface of the hot layer were discussed in detail: control of surface temperature, control of surface ablation volume and control of surface ablation start time, given Control variable selection criteria.