| MDO环境下的BWB气动模型及在概念设计中的应用 |
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| 引用本文： | 林宇,王和平,陈迎春,袁昌盛,张彬乾.MDO环境下的BWB气动模型及在概念设计中的应用[J].航空计算技术,2009,39(6):42-45. |
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| 作者姓名： | 林宇 王和平 陈迎春 袁昌盛 张彬乾 |
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| 作者单位： | 1. 西北工业大学,航空学院,陕西,西安,710072
2. 上海飞机设计研究所,上海,200232 |
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| 摘 要： | 提出了MDO环境下分析亚音速BWB布局的气动模型建立途径，以升力面理论为基础，修正型阻、波阻与涡升力的影响，来分析非常规布局的气动特性，实现了比传统概念设计方法更高的分析精度和比CFD快得多的计算速度。通过与大展弦比平直机翼和小展弦比三角翼实验数据的对比，验证了分析模型的有效性；并将其应用于一个亚音速BWB布局的概念设计优化过程，实现了基本的气动／结构一体化设计。可靠的分析模型的建立将成为BWB布局飞机多学科设计优化的坚实基础。
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| 关 键 词： | 气动模型 翼身融合布局 多学科设计优化 概念设计 |
Aerodynamic Model of Subsonic Blended- Wing- Body under MDO Environment and the Application in Conceptual Design |
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| LIN Yu,WANG He-ping,CHEN Ying-chun,YUAN Chang-sheng,ZhANG Bin-qian.Aerodynamic Model of Subsonic Blended- Wing- Body under MDO Environment and the Application in Conceptual Design[J].Aeronautical Computer Technique,2009,39(6):42-45. |
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| Authors: | LIN Yu WANG He-ping CHEN Ying-chun YUAN Chang-sheng ZhANG Bin-qian |
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| Institution: | LIN Yu , WANG He- ping , CHEN Ying- chun YUAN Chang- sheng , ZhANG Bin- qian ( 1. College of Aeronautics, Northwestern Polytechnical University, Xi＇an 710072, China ; 2. Shanghai Institute of Aircraft Design, Shanghai 200232, China) |
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| Abstract: | This paper provides a way to build aerodynamic model of subsonic Blended- Wing- Body aircraft under the environment of Multidisciplinary Design Optimization （MDO）. It bases on the lifting- surface theory and corrects the influence of profile drag, wave drag and vortex lift, to analyze the aerodynamic character of an unconventional configuration. It has higher fidelity than those for conceptual design, but faster than CFD. Through the comparison between calculated and experimental data of a high aspect ratio straight wing and a low aspect ratio delta wing, the validity of this model could be proved. The application of this model for the conceptual design of a subsonic Blended- Wing- Body aircraft a- chieves a basic integrative design by considering aerodynamics and structure simultaneously. The establishment of reliable analyzer will become a firm groundwork for the MDO of Blended- Wing- Body aircraft. |
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| Keywords: | aerodynamic model blended- wing- body multidisciplinary design optimization conceptual design |
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