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高超声速流动多物理效应对美国航天飞机气动力影响研究的回顾

高超声速流动多物理效应对美国航天飞机气动力影响研究的回顾

ISSN:0258-1825
2017年第32卷第1期
毛枚良1,2,陈亮中1,万钊1,刘化勇2,燕振国2 Mao Meiliang1,2,Chen Liangzhong1,Wan Zhao1,Liu Huayong2,Yan Zhenguo2
1.中国空气动力研究与发展中心, 计算空气动力学研究所, 四川 绵阳 621000;2.中国空气动力研究与发展中心, 空气动力学国家重点实验室, 四川 绵阳 621000 1.Institute of Computational Aerodynamics of China Aerodynamics Research and Development Center, Mianyang 621000, China;2.State Key Laboratory of Aerodynamics of China Aerodynamics Research and Development Center, Mianyang 621000, China

临近空间高超声速流动往往存在真实气体效应、稀薄气体效应和粘性干扰效应等多种复杂的物理、化学和流动现象。围绕高超声速绕流中多物理效应这一主题,对美国航天飞机高超声速气动力研究的工作按飞行前与飞行后两个阶段进行了回顾。在飞行前阶段,主要介绍了气动力外推参数的研究和不确定度研究的内容,确定了以第三粘性系数


Near-space hypersonic flow usually has concomitant circumstances with multiple complex physical, chemical and fluid mechanicsuch as real gas effects, rarefied effects, and viscous interactions. Regarding the topic of multi-physics phenomena in the hypersonic flow past complex lift-body configurations, the studies on the hypersonic aerodynamic characteristics of American shuttle orbiter were briefly reviewed for the phase of pre-flight and post-flight, respectively. For the pre-flight phase, the studies were introduced with respect to extrapolating parameter of the aerodynamic data and the uncertainty quantity. Hypersonic viscous parameter was employed as the extrapolating factor of the aerodynamic characteristics, and the computational method was introduced for the uncertainty quantity of the aerodynamic forces. The introduction of the post-flight phase included the comparison between the predicted data and the flight tests, the longitudinal trim anomaly analysis, and the extrapolating method for the flight data. The preliminary method, extrapolating the wind-tunnel data to the flight data, was surveyed. The influence of the real gas effects was identified on the aerodynamic characteristics; however, it is still uncertain that the real gas effects have influence on the control surfaces efficiency. Finally, four issues, i.e., the probability of avoiding longitudinal trim anomaly, the differences of the body-flap efficiency between the calculations and the experiments, the studies of the aerodynamics uncertainty with various approaches, and the establishment of a sharing system for data from the flight tests, the tunnel tests and the CFD are discussed. In addition, it is mentioned in the early studies that the multi-physics phenomena co-exist during the space shuttle reentry, and it is difficult to discern the individual effect on the aerodynamic characteristics under the research conditions at that time. In the late studies, it has not been focused on that the coupled effects of these phenomena on the aerodynamics characteristics of the space shuttle. This lack of investigations provides a further research field for the studies of multi-physics phenomena.

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ISSN:0258-1825
2017年第32卷第1期

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