Experimental and numerical investigation of hypersonic performance of double swept waverider

被引：0
|
作者：
Liu C. [1 ]
Meng X. [1 ]
Liu R. [1 ]
Bai P. [1 ]
机构：
[1] China Academy of Aerospace Aerodynamics, Beijing
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2022年 / 43卷 / 09期
关键词：
double swept; hypersonic; lift-to-drag ratio; waverider; wind tunnel test;
D O I：
10.7527/S1000-6893.2021.26015
中图分类号：
学科分类号：
摘要：
A design method of the planform-customized waverider is proposed using the osculating-cone method, so as to enable the design of a double swept waverider to remedy the deficiencies of the waverider. To valid the proposed method, two models of the double swept waverider with a cusp head and a bend head are fabricated for wind tunnel tests, and a model of the single swept waverider is also constructed as the configuration for comparison. A variety of experiments at design-Mach-number conditions are performed in the hypersonic wind tunnel, and the Computational Fluid Dynamics (CFD) simulations are also conducted. The effect of bluntness, aerodynamic forces and longitudinal stability are studied. The results of comparison indicate that the bluntness of leading-edge area influences the lift-to-drag (L/D) ratio significantly; the aerodynamic performances obtained from wind tunnel tests are very close to those of CFD simulations, marking a difference in L/D of less than 0.5% in the design state. The data from both experiments and simulations show that the double swept waverider can maintain the "wave-riding" performance in the hypersonic state and its longitudinal stability is improved dramatically compared with that of the single swept configuration, verifying the effectiveness of the proposed method and the design configuration. © 2022 AAAS Press of Chinese Society of Aeronautics and Astronautics. All rights reserved.
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