一种面向超声速民机低声爆布局的全声爆毯优化设计方法

doi:10.7527/S1000-6893.2025.31909

Abstract

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

CLC Number:

V211.3

Qing CHEN, Zhonghua HAN, Keshi ZHANG, Jianling QIAO, Yulin DING, Wenping SONG. A full-carpet design optimization method for low-boom supersonic civil aircraft configuration[J]. Acta Aeronautica et Astronautica Sinica, 2025, 46(20): 531909.

Figures/Tables 27

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方位角/（°）	横向距离/km	方位角/（°）	横向距离/km
5	1.54	30	10.57
10	3.10	35	13.13
15	4.74	40	16.33
20	6.49	45	20.82
25	8.40	50	30.74

参数	取值
起飞质量/t	30
巡航马赫数	1.6
巡航高度/km	16
巡航升力系数	0.112
机翼面积/m²	130

构型	升力系数	压差阻力系数/10^-4	摩擦阻力系数/10^-4	总阻力系数/10^-4	升阻比
基准构型	0.112	68.7	61.4	130.1	8.61
设计构型	0.114	68.1	61.5	129.6	8.80

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

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