Optimization of multi-objective reentry trajectory for hypersonic gliding vehicle
R. X. Yan · Flight Dynamics · 2014
Aimed at the multi-objective optimization characteristics of reentry trajectory of the hypersonic gliding vehicle,three degree-of-freedom kinetic gliding reentry model and pneumatic model are established. The fundamental model of solving multi-objective optimization with physical programming is introduced,and advanced measure is put forward based on the operation characteristics of pseudospectral method. Considering constrains of normal load,dynamic pressure,head point heat and so on,hp adaptive pseudospectral method is used to solve the optimization problem of glide reentry trajectory,in which four objectives: minimum time,maximum cross-range,minimum aerodynamic heating and minimum peak value of heating rate are taken into account. The physical programming frame and preference structure is determined with analysis of the results of single objective optimization. Simulation of multi-objective trajectory optimization, which represented the preference of designer, is made by using hp adaptive pseudospectral method in the physical programming frame. The results show that the advanced physical programming method would combine well with the hp adaptive pseudospectral method,which could give an compromise answer for the multi-objective problem.