Aerodynamic Design Optimization of a Kind of Reentry Capsule Based on CFD and Multi-objective Genetic Algorithm
This paper presents a new kind of aerodynamic shape for reentry capsule,called spherical cap cubic curve segment(SCCS)shape,which is modeled by replacing the reversing cone segment of the traditional spherical cap segment-reversing cone(SCSC)shape with a more various cubic curve segment,however the spherical cap section is retained.In the assumed allowable axial range of centroid under a designed Mach number,a multi-point/objective design optimization mathematical programming model was established against aerodynamic static longitudinal stability characteristics,hypersonic lift-to-drag ratio characteristics under trim angle of attack and off-set location placement of gravity center for the above reentry capsule.Then the aerodynamic design optimization problem of the proposed reentry capsule was investigated through multi-objective genetic algorithm(MOGA)combined numeric parallel field simulation methods,and finally the optimal Pareto front was given.Comparing with the results of the SCSC shape in the literature1,it shows that the optimal Pareto front of the current cubic curve shape has a wider distribution range relative to the counterparts of the segment-reversing cone shape,however both are relatively close in the overlapping area.
capsule multi-objective design optimization numeric simulation single point static stability cubic curve
Wang Rong Chen Bing-yan Zhang Hong-jun Zhou Wei-jiang Bai Peng Yang Yun-jun
The First Institute,China Academy of Aerospace Aerodynamics,Beijing 100074,China
国际会议
2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)
上海
英文
1-8
2014-09-24（万方平台首次上网日期，不代表论文的发表时间）