航空学报 > 2022, Vol. 43 Issue (2): 124998-124998   doi: 10.7527/S1000-6893.2020.24998

上/下反翼对双后掠乘波体高超特性的影响

孟旭飞, 白鹏, 李盾, 王荣, 刘传振   

  1. 中国航天空气动力技术研究院, 北京 100074
  • 收稿日期:2020-11-26 修回日期:2020-12-07 发布日期:2021-01-08
  • 通讯作者: 刘传振 E-mail:chuanzhenliu@126.com
  • 基金资助:
    国家自然科学基金(11672281)

Effect of dihedral wings on hypersonic performance of double swept waverider

MENG Xufei, BAI Peng, LI Dun, WANG Rong, LIU Chuanzhen   

  1. China Academy of Aerospace Aerodynamics, Beijing 100074, China
  • Received:2020-11-26 Revised:2020-12-07 Published:2021-01-08
  • Supported by:
    National Natural Science Foundation of China (11672281)

摘要: 从密切锥乘波体理论提出给定前缘型线的乘波体设计方法,通过给定三维前缘型线分别生成具有上反和下反机翼的双后掠乘波体。使用CFD技术评估不同上/下反机翼乘波体的高超声速气动性能,并选取稳定性判据,研究机翼上下反对纵向和横侧向稳定性的影响。结果表明,上/下反机翼对"乘波"性能影响很小,在高超声速状态仍然保持了高升阻比特性;机翼上反,纵向稳定性降低,机翼下反,纵向稳定性提高;机翼上反可以提高横向稳定性,下反则降低;机翼上反和下反都会提高侧向稳定性,而且上反的效果更明显;同时机翼上反使乘波体的偏航动态稳定性明显提升,而机翼下反对偏航动态稳定性的影响随攻角增大而降低。

关键词: 乘波体, 双后掠, 上/下反翼, 高超声速, 横侧向稳定性

Abstract: The waverider design with a given 3D leading edge is developed from the osculating-cone treatment, and customizing the leading edge curves generates double swept waveriders with dihedral and anhedral wings. Using CFD techniques, we evaluated the hypersonic performance of the waveriders, and studied the effect of the wing with positive and negative dihedral angles, namely, wing dihedral and wing anhedral, on stability. Results show that the wing dihedral exerted nearly no influence on the "wave-riding" performance, and hence a high lift-to-drag ratio was maintained in the hypersonic state. The wing dihedral decreased the longitudinal stability, while wing anhedral improved it; the former raised the lateral stability, while the latter lowered it; both improved the directional stability, and the effect of the former was stronger; the dynamic directional stability of the waveriders can be clearly improved by the wing dihedral, whereas the improvement by the wing anhedral decreased as the angle of attack increased.

Key words: waverider, double swept, dihedral wing, hypersonic, lateral-directional stability

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