摘要
本文首先叙述了在空天飞机概念研究和初步设计阶段进行气动力特性工程预测的必要性,然后介绍了美国超声速和高超声速任意物体程序(S/HABP)中的计算无粘压力的方法,重点介绍了选择方法的原则。在这基础上,介绍了一种在超声速和高超声速均一致适用的方法,它是采用 Dahlem-Buck 经验公式,并对修正牛顿公式中的修正因子 K,绐出了对飞行器各部分各不相同的计算公式。最后对今后的工作提出了建议。
The necessity for predicating the aerodynamic character-istics in the stage of concept studies or preliminary design of aerosp-ace plane is explained.The method of Supersonic /Hypersonic Arbitra-ry Body program(S/HABP)is introduced.It puts emphasis on the selectionrationale of the method.Go a step further,a supersonic and hyperson-ic unified predicting,method is introduced.The idea of this method isthat the Dahlem-Buck empiric formula as well as the different formu-la of the correction factor(k)of the Modified Newtonian formula forthe different part of the vehicle will be used.Finally,suggestionsabout further work are put forward.
关键词
空天飞机
气动力特性
工程预测
aerospace plane
aerodynamic characteristics
engineering predication
hypersonic aerodynamics
