| 乘波构型的钝化方法及其对性能影响研究 |
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| 引用本文： | 刘济民,侯志强,宋贵宝,朱旭程.乘波构型的钝化方法及其对性能影响研究[J].宇航学报,2011,32(5). |
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| 作者姓名： | 刘济民 侯志强 宋贵宝 朱旭程 |
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| 作者单位： | 海军航空工程学院飞行器工程系,山东烟台,264001 |
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| 摘 要： | 前缘钝化是解决乘波构型飞行器气动热问题的有效方法之一.按照乘波构型的设计特点,对已有的两种钝化方法分别进行了改进.采用CFD方法分析了前缘钝化及不同钝化半径对乘波构型性能的影响,得出了乘波构型气动力和气动热性能参数随钝化半径的变化规律.计算结果表明:在相同的钝化半径下,按改进的Tincher方法钝化后的乘波构型与按改进的Takashima方法钝化后的乘波构型相比:升阻比大、总的表面积小、最大热流密度基本一样,非驻点区乘波构型前缘的热流密度峰值较大.因而按改进的Tincher方法钝化后的乘波构型气动性能明显好于按改进的Takashima方法钝化后的乘波构型,而气动热性能则略差于后者.分析表明:钝化后的乘波构型性能不仅与钝化半径有关,而且受钝化方法的影响也很大.在对高超声速乘波飞行器进行布局设计时,应针对乘波构型的设计特点,采用合适的钝化方法,综合考虑钝化方法和钝化半径对气动力和气动热性能的影响效应,寻找最佳的钝化方案.研究结论可为高超声速乘波飞行器的外形设计提供一定的依据.
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| 关 键 词： | 钝化 乘波构型 气动特性 气动热特性 数值模拟 |
Blunted Method for Waverider and Its Effect on Performance |
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| LIU Ji-min,HOU Zhi-qiang,SONG Gui-bao,ZHU Xu-cheng.Blunted Method for Waverider and Its Effect on Performance[J].Journal of Astronautics,2011,32(5). |
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| Authors: | LIU Ji-min HOU Zhi-qiang SONG Gui-bao ZHU Xu-cheng |
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| Institution: | LIU Ji-min,HOU Zhi-qiang,SONG Gui-bao,ZHU Xu-cheng(Department of Airborne Vehicle Engineering,Naval Aeronautical and Astronautical University,Yantai 264001,China) |
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| Abstract: | The leading edge to be blunted is an efficient way to improve the aerothermodynamics performance of a hypersonic waverider vehicle.Tincher method and Takashima method are improved according to design features of waverider configuration.The CFD is used to analyze the influence of blunt leading edge on the performance of waverider.The relations of aerodynamic and aerothermodynamic characteristics to blunt radius are obtained for both blunted methods.The results show that the lift-to-drag ratios of waveriders ... |
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| Keywords: | Blunt Waverider configuration Aerodynamic characteristic Aerothermodynamic characteristic Numerical simulation |
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