Engineering notes integrated aerodynamic thermal structure design optimization method of lifting surfaces

Integrated aerodynamic thermal structure design optimization method of lifting surfaces was studied. The integrated aerodynamic-thermal-structure analysis includes the aerodynamic heating module, the transient heat transfer module, the thermal mode module, the unsteady aerodynamics, the flutter analysis module, and the optimization module. After each analysis, the maximal displacement and minimal thermal flutter velocity under all temperature fields correspond to all of the time points. The optimization results show that the structure mass of the lifting surface is minimized under the constraints of displacement and flutter velocity. IfGA is employed for this integrated optimization design, the number of executions of the integrated aerodynamic thermal-structural analysis is more than 1000, for which the total time of the optimization is about 39.2 h. Therefore, the fuzzy clustering ARFC strategy improves the optimization efficiency of this integrated aerodynamic-thermal- structural analysis.