导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2023, Vol. 44 ›› Issue (8): 127349-127349.doi: 10.7527/S1000-6893.2022.27349

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Effect of wing dihedral and anhedral angles on hypersonic aerodynamic characteristics of high-pressure capturing wing configuration

Siyuan CHANG1, Yao XIAO1,2(), Guangli LI1,2, Zhongwei TIAN3, Kaikai ZHANG1,2, Kai CUI1,2   

  1. 1.State Key Laboratory of High-Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China
    2.School of Engineering Science,University of Chinese Academy of Sciences,Beijing 100049,China
    3.Wide Field Flight Engineering Science and Application Center,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China
  • Received:2022-04-29 Revised:2022-07-29 Accepted:2022-08-25 Online:2023-04-25 Published:2022-08-31
  • Contact: Yao XIAO E-mail:xiaoyao@imech.ac.cn
  • Supported by:
    National Natural Science Foundation of China(12002347);Basic Frontier Science Research Program of Chinese Academy of Sciences(ZDBS-LY-JSC005)

Abstract:

To study the influence of wing dihedral/anhedral angle changes on the hypersonic aerodynamic characteristics of the High-pressure Capturing Wing (HCW) configuration, we studied the variation law of the lift-drag characteristics, and longitudinal and lateral-directional stability with the change of wing dihedral/anhedral angles based on a HCW concept configuration under the computation conditions of Mach number 6 and an altitude of 30 km. The design variables are dihedral/anhedral angles of HCW and delta wings, and some techniques, such as the uniform experimental design method, numerical simulation method, and Kriging modeling method, were utilized in the analysis. The results show that the lift, drag, and lift-drag ratio have similar variation trends with the change of wing dihedral/anhedral angles, and are more sensitive to the change of the dihedral angle. At small angles of attack, the wing dihedral significantly reduces the lift-drag ratio, while the anhedral slightly increases and then slowly decreases it. At large angles of attack, the wing dihedral/anhedral angles have less influence on the lift-drag ratio. The longitudinal stability is mainly affected by the dihedral/anhedral angles of the delta wing. Specifically, the delta wing dihedral decreases the longitudinal stability, while the anhedral hardly affects it. Both the wing dihedral and anhedral angles improve the directional stability, with the effect of the anhedral stronger. The wing dihedral raises the lateral stability, while the anhedral lowers it. However, at a large angle of attack, the large dihedral angle of the delta wing may lead to a decrease in lateral stability.

Key words: High-pressure Capturing Wing (HCW), hypersonic, aerodynamic characteristics, dihedral/anhedral angles, stability

CLC Number: