航空学报 > 2025, Vol. 46 Issue (20): 531457-531457   doi: 10.7527/S1000-6893.2025.31457

融入低声爆设计的超声速民机概念方案多学科优化

杨超1, 谭玉婷2, 王伟2, 赵彦2, 余雄庆1()   

  1. 1.南京航空航天大学 航空学院,南京 210016
    2.航空工业第一飞机设计研究院,西安 710089
  • 收稿日期:2024-10-29 修回日期:2024-12-03 接受日期:2025-02-19 出版日期:2025-02-28 发布日期:2025-02-28
  • 通讯作者: 余雄庆 E-mail:yxq@nuaa.edu.cn

Multidisciplinary optimization with low-boom design for supersonic civil aircraft conceptual design

Chao YANG1, Yuting TAN2, Wei WANG2, Yan ZHAO2, Xiongqing YU1()   

  1. 1.College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
    2.AVIC The First Aircraft Design Institute,Xi’an 710089,China
  • Received:2024-10-29 Revised:2024-12-03 Accepted:2025-02-19 Online:2025-02-28 Published:2025-02-28
  • Contact: Xiongqing YU E-mail:yxq@nuaa.edu.cn

摘要:

针对超声速民机概念方案快速分析和优化的需求,提出了一种融入低声爆设计的多学科分析优化策略。该方法主要包括3个步骤:确定目标反向等效面积,旨在为多学科优化提供一个低声爆反向等效面积的目标;在多学科优化框架下,以机翼、尾翼总体参数为设计变量,获得最大起飞重量轻、目标反向等效面积匹配度高的最优解集;基于多学科优化结果,小幅调整机身外形、尾翼参数,进一步逼近目标反向等效面积。在该多学科方法流程中,声爆特性分析仅涉及反向等效面积的计算,计算量大幅度降低,有利于将高精度的声爆预测方法应用于概念设计的多学科优化,而且该方法的架构与现有飞机多学科优化架构相兼容,易于实施。应用本方法对某中型超声速民机概念方案进行了优化设计,结果表明,该方法能以较少的计算量获得多目标的最优解集;从最优解集中筛选出一个目标反向等效面积匹配度高且最大起飞重量轻的优选方案,相比基准方案,该优选方案最大起飞重量减少了3.6%,声爆降低了6.62 PLdB。

关键词: 超声速民机, 概念设计, 多学科优化, 低声爆设计, 反向等效面积

Abstract:

To meet the demand for rapid analysis and optimization in conceptual design of supersonic civil aircraft, we present a multidisciplinary analysis optimization method integrated with low-boom design. The method consists of three main steps. Determining the target reversed equivalent area, which aims to provide a low-boom reversed equivalent area distribution target for multidisciplinary optimization. Optimizing the aircraft configuration within the multidisciplinary optimization framework, the overall parameters of the wing and tail are used as design variables to obtain a multi-objective optimal solution set for minimizing maximum takeoff weight and matching equivalent reversed area. Fine-tuning fuselage shape and tailplane parameters based on the results of multidisciplinary optimization, making minor adjustments to further match the target reversed equivalent area distribution. In this multidisciplinary approach, sonic boom characteristics are analyzed exclusively through the calculation of reversed equivalent area, which significantly reduces the computational expense. This enables the application of high-fidelity sonic boom prediction methods during the conceptual design. The method is compatible with existing multidisciplinary optimization frameworks for civil aircraft design, facilitating seamless implementation. The method is applied to the optimization of the medium-sized supersonic civil aircraft conceptual design.Results show that an optimal solution set for the multiple objectives is obtained with less computational expense. An optimal design that has less maximum takeoff weight and highly matches the reversed equivalent area, is selected from the optimal solution set. Compared to the baseline design, the maximum takeoff weight is reduced by 3.6% and sonic boom is reduced by 6.62 PLdB.

Key words: supersonic civil aircraft, conceptual design, multidisciplinary optimization, low-boom design, reversed equivalent area

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