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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (20): 531915.doi: 10.7527/S1000-6893.2025.31915

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

Broad-speed-range wing design of supersonic civil aircraft based on engineering

Zhenrong LIAO1,2, Junfu LI1,2,3, Bowen ZHAO1,2(), Ming ZHANG1,2, Lu XIE1,2, Zhonghua HAN2,3, Mengqi AI1,2   

  1. 1.AVIC The First Aircraft Design Institute,Xi’an 710089,China
    2.National Key Laboratory of Aircraft Configuration Design,Xi’an 710072,China
    3.School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China
  • Received:2025-03-03 Revised:2025-06-24 Accepted:2025-07-22 Online:2025-07-31 Published:2025-07-30
  • Contact: Bowen ZHAO E-mail:1844450113@qq.com

Abstract:

In addition to ensuring the aerodynamic performance of supersonic flight, the aerodynamic design of supersonic civil aircraft needs to satisfy the low speed characteristics required by the project. Especially, attention should be paid to the pitching torque elevation angle and aileron efficiency characteristics at low speed. The CFD numerical method based on Reynolds average Navier-Stokes equation is used to calculate the full velocity aerodynamic characteristics of a typical low-boom supersonic civil aircraft configuration. The reasons for the lack of pitching moment elevation and aileron efficiency are analyzed. The influence of leading-edge radius, leading-edge sagging position and swept angle on the matching of high/low-velocity aerodynamic characteristics is studied. It was evaluated that the optimal scheme had good aerodynamic performance at Ma=1.8 with a lift-to-drag ratio of 8.28. At the same time, when Ma=0.3, the elevation angle of the pitching moment was delayed to 14°, and the efficiency of aileron remained above 80% within the calculated angle of attack. The aerodynamic design scheme of wide-speed-range airfoil satisfying engineering requirements is proposed. It is practical to solve the problem of matching high/low-speed aerodynamic characteristics of supersonic civil aircraft.

Key words: supersonic civil aircraft, broad-speed-range wing design, airfoil design, low speed with high-angle-of-attack, pitching moment, aileron efficiency

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