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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (20): 531909.doi: 10.7527/S1000-6893.2025.31909

• Special Issue: Key Technologies for Supersonic Civil Aircraft • Previous Articles    

A full-carpet design optimization method for low-boom supersonic civil aircraft configuration

Qing CHEN1,2, Zhonghua HAN1,2, Keshi ZHANG1,2(), Jianling QIAO1,2, Yulin DING1,2, Wenping SONG1,2   

  1. 1.School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China
    2.National Key Laboratory of Aircraft Configuration Design,Xi’an 710072,China
  • Received:2025-02-27 Revised:2025-05-26 Accepted:2025-06-13 Online:2025-06-30 Published:2025-06-16
  • Contact: Keshi ZHANG E-mail:zhangkeshi@nwpu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(52472385);National Key Laboratory of Aircraft Configuration Design 2024 Open Fund(JBGS-2024-04)

Abstract:

Reducing the sonic boom to a community-acceptable level across the full carpet is a significant challenge for the development of next-generation Supersonic Transport (SST). The existing low-boom design methods focus only on one azimuth angle, leading to an unacceptable boom at other locations across the boom carpet. To solve this problem, this paper formulates a metric termed Full-carpet sonic Boom Loudness (FBL) based on CFD simulation combined with the augmented Burgers equation. FBL can account for both the contribution of ground loudness and spatial influence area at different azimuth angles. By integrating the FBL and surrogate-based optimization framework, a full-carpet low-boom design optimization method is proposed. Then, the proposed method is applied to the low-boom design of an SST configuration. The results show that sonic booms at all azimuth angles are mitigated across the full carpet, where the maximum loudness is reduced to 81.16 PLdB while the minimum loudness is reduced to 77.57 PLdB. The shock wave pattern of designed configuration is improved and tail shocks of far-field signatures are mitigated. Compared to the existing methods focusing only on one azimuth angle, the proposed method outperforms them in boom reduction, obtaining a lower ground loudness distribution. This research may support the low-boom design of SST configurations.

Key words: supersonic civil aircraft, sonic boom, low-boom configuration, full carpet, low-boom optimization design

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