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Optimized Waverider for Low-Boom Supersonic Aircraft

机译:低空超音速飞机的优化的Waverider

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摘要

This research studies a cone-derived waverider, the airframe favorable for its high L/D characteristic. The study waslooked for design parameters that relates to the major concern of supersonic commercial aircraft, the sonic boom andaerodynamics performance. The numerical simulation is conducted under the condition of supersonic flight to analyze itsboom characteristics. After investigating three design parameters, the azimuth angle (ϕ), cone angle (δ) and R0 to observethe over pressure, L/D, CL ,CD and CM . The multi-objective optimization is conducted to study how each variableaffects to objectives of interest. Sensitivity analysis was employed to analyze how each variable corresponds to each other.The PCE-based Sobol indices were used as the analysis tool. The effect of design variable, δ and R0 corresponding toobjectives CL ,CM and overpressure were analyzed the main effect, interaction effect and total effect. As a result, thecone-derived waverider shows a significant trait to be able to reduce sonic boom while provides high lift force at the sametime.
机译:该研究研究了锥形衍生的Waverider,该机身有利于其高L / D特性。这项研究是 寻找与超音速商用飞机,Sonic Boom和Sonic Boom的主要关注的设计参数 空气动力学性能。数值模拟在超音速飞行的条件下进行分析 繁荣特色。在调查三个设计参数之后,方位角(φ),锥角(δ)和R0观察 过压,L / D,Cl,Cd和Cm。进行多目标优化来研究每个变量 影响感兴趣的目标。使用敏感性分析来分析每个变量如何彼此对应。 基于PCE的SOBOL指标用作分析工具。设计变量,δ和R0对应的效果 目的,分析了CL,CM和超压,主要效果,相互作用效果和总效果。结果, 锥衍生的Waverider表示能够减少Sonic Boom的重要特征,同时提供高升力 时间。

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