Abstract: This paper compares and analyzes the distributions of the aerodynamic force and the heat flux for three kinds of aeroshells, by using a modified CFD model and taking into account the deformation effects. It is shown that the aerodynamic force and heat flux of the traditional rotary rigid aeroshell are in uniform distributions in the circumferential direction, while in the actual cases the aerodynamic force and heat concentrate at the edge of the prismatic aeroshell, especially for the prismatic flexible aeroshell. The heat flux for all kinds of aeroshells gradually decreases with the increase of the radial distance, with an abruptly rise at the shoulder edges. For the prismatic rigid aeroshell, a similar distribution of the aerodynamic pressure to that of the traditional rotary rigid aeroshell, and a similar distribution law of aerodynamic shear is found as that for the prismatic flexible aeroshell. In addition, the aerodynamic force and heat profiles for the prismatic rigid aeroshell can be the envelopes of those for the flexible counterpart.