A research on the attitude liquid rocket engine using the film cooling and radiation cooling methods was performed.A model based on film cooling heat transfer

which employs an integrated analysis method

was presented by this paper.The finite element method (FEM) was used for coupling analysis of the thermal and structure of thruster chamber under the condition of calculated wall temperature and pressure distributions.At last

with use of the FEM

the thruster chamber buckling was discussed under the condition of the given temperature

pressure and the load of external pressure.The result was close to the referenced experiment result

with the greatest temperature error of 3.67%.The result indicates that the integrated analysis method for the simulation of heat transfer is efficient;taking into account of the thermal load

the buckling load is increased about 5.7933% than that without thermal load.The results provide some theory support for engineering applications.