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Acta Aeronautica et Astronautica Sinica ›› 2023, Vol. 44 ›› Issue (23): 128441-128441.doi: 10.7527/S1000-6893.2023.28441

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Wide-speed aerodynamic layout adopting waverider-delta wing

Shusheng CHEN1, Zhaokang ZHANG1, Jinping LI2(), Cong FENG1, Zhenghong GAO1   

  1. 1.School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China
    2.National Key Lab of Aerospace Power System and Plasma Technology,Air Force Engineering University,Xi’an 710038,China
  • Received:2022-12-29 Revised:2023-01-17 Accepted:2023-02-08 Online:2023-12-15 Published:2023-02-10
  • Contact: Jinping LI E-mail:lijinping@buaa.edu.cn
  • Supported by:
    Young Elite Scientists Sponsorship Program by CAST(2022QNRC001)

Abstract:

To overcome the difficulty in inclusive consideration of the subsonic/transonic/supersonic/hypersonic aerodynamic performance of hypersonic vehicles in wide-speed range, we propose a wide-speed-range hypersonic aerodynamic configuration with a waverider forebody and a large swept delta wing. The design of the waverider forebody is based on the conical flow theory. The design Mach number is 5. The wide-speed range airfoil based on the surrogate model optimization design is arranged on a large swept wing with a small aspect ratio. The result shows that in subsonic flight, the configuration can improve aerodynamic performance using vortex lift at high angles of attack, with the lift-drag ratio maintained above 8. In supersonic flight, the double “S” shaped lower surface of the delta wing enables additional loading near the trailing edge of the aerodynamic configuration. In hypersonic flight, the shock wave characteristics at the leading edge of the waverider improve the lift-drag performance. The lift-drag ratio in the supersonic/hypersonic speed range is no smaller than 4.5 with good cruise performance. In addition, the longitudinal static stability in the wide-speed range is analyzed, showing that the aerodynamic center of the aerodynamic configuration is near the tailing edge.

Key words: wide-speed range, hypersonic, waverider, delta wing, vortex lift

CLC Number: