摘要
采用多参数综合目标函数的乘波体优化设计方法,研究了乘波体外形设计参数量化方法,以及设计实用的乘波体时选择优化目标应考虑的因素,并由任意形状开始,用完全的优化方法设计出了巡航M数4～4.5的飞行器乘波体外形。本文的研究表明,用完全的优化方法设计乘波体,选择合理优化目标函数是非常关键的一步,它决定了能否得到合理可用的最终设计结果。
A Mach 4～4.5 cruise optimized waverider configuration derived from conical flow field is presented.The optimization method of multi-parameter and integrated object function is applied in the design routine.The optimization routine starts from an arbitrary configuration.The optimization method has proven to be effective.The results show that the aerodynamic performance can satisfactorily be attained for Ma4～4.5 cruise aircraft by waverider method.It is demonstrated that a proper object function is a decisive factor in the optimization design procedure.Reynolds number also has a remarkable effect on the results.Low speed performance,stability and control characteristics are of importance in object function.The requirement for high lift-drag ratio always drives the solution toward plan shock.On the other hand,the requirement for stability tends to conical solution.The final result lies on the compromise between the two solutions.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2004年第2期135-140,共6页
Journal of Astronautics
关键词
设计
乘波体
优化
飞行器
Design
Waverider
Optimization
Aircraft
