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Integration of Off-Track Sonic Boom Analysis for Supersonic Aircraft Conceptual Design

机译：超音速飞机概念设计的离轨音爆分析的集成

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摘要

A highly desired capability for aircraft conceptual design is the ability to rapidly and accurately evaluate new concepts to avoid adverse trade decisions that may hinder the development process in the later stages of design. Evaluating the robustness of new low-boom concepts is important for the conceptual design of supersonic aircraft. Here, robustness means that the aircraft configuration has a low-boom ground signature at both under- and off-track locations. An integrated process for under- and off-track sonic boom analysis is developed to facilitate the design of robust low-boom supersonic aircraft The key enabler for sonic boom analysis is accurate computational fluid dynamics solutions for off-body pressure distributions. To ensure the numerical accuracy of the off-body pressure distributions, a mesh study is performed with Cart3D (an inviscid computational fluid dynamics solver) to determine the mesh requirements for off-body computational fluid dynamics analysis. Comparisons are made between the sonic boom analysis results conducted with the Cart3D and USM3D inviscid computational fluid dynamics solvers. The variation in the ground signature that results from changes in the location of the computational fluid dynamics off-body pressure distribution is also examined. Finally, a complete under- and off-track sonic boom analysis is presented for two distinct supersonic concepts to demonstrate the capability of the integrated analysis process.
机译：飞机概念设计的高度期望的能力是快速准确评估新概念的能力，以避免可能阻碍设计后期开发过程的不利贸易决策。评估新的低动量概念的耐用性对于超音速飞机的概念​​设计很重要。在这里，稳健性意味着飞机配置在轨道下和轨道外位置都具有低空地面信号。开发了用于轨道下和轨道外声波分析的集成过程，以帮助设计健壮的低臂超音速飞机。声波分析的关键推动因素是针对体外压力分布的精确计算流体动力学解决方案。为了确保体外压力分布的数值准确性，使用Cart3D（无粘性计算流体动力学求解器）进行了网格研究，以确定用于体外计算流体动力学分析的网格要求。在用Cart3D和USM3D无粘性计算流体动力学求解器进行的声波分析结果之间进行了比较。还检查了由于计算流体动力学离体压力分布的位置变化而引起的地面特征变化。最后，针对两个截然不同的超音速概念，提出了完整的轨道下和轨道外声爆分析，以证明集成分析过程的功能。

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  • 来源
    《Journal of Aircraft》 |2014年第1期|23-28|共6页
  • 作者

    Irian Ordaz; Wu Li;

  • 作者单位

    NASA Langley Research Center, Hampton, Virginia 23681,Aeronautics Systems Analysis Branch, Systems Analysis and Concepts Directorate;

    NASA Langley Research Center, Hampton, Virginia 23681,Aeronautics Systems Analysis Branch,Systems Analysis and Concepts Directorate;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-18 02:27:12

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