气体质量引射对钝锥俯仰特性的影响
收稿日期: 2024-06-14
修回日期: 2024-07-08
录用日期: 2024-08-12
网络出版日期: 2024-08-26
基金资助
国家自然科学基金(U23B2065)
Effect of gas mass injection on pitching characteristics of blunt cone
Received date: 2024-06-14
Revised date: 2024-07-08
Accepted date: 2024-08-12
Online published: 2024-08-26
Supported by
National Natural Science Foundation of China(U23B2065)
梁彬 , 赵俊波 , 付增良 , 周家检 , 周平 , 张石玉 , 孙玮琪 . 气体质量引射对钝锥俯仰特性的影响[J]. 航空学报, 2025 , 46(3) : 130822 -130822 . DOI: 10.7527/S1000-6893.2024.30822
Using the coupled wind tunnel test technology of ablation gas mass injection and motion, we study the influence of gas injection on the aerodynamic characteristics such as dynamic stability of blunt cone model. The test was conducted at Mach number 6.0, and the injected gases were air, argon, and helium, respectively. The test results show that the increase in the mass flow rate of the injected gas produces a small amount of nose-down pitching moment; the coupling of the mass flow rate of the injected gas with the periodically changing model motion leads to different pitching dynamic derivatives with an obvious change pattern; a constant mass flow rate of the injected gas corresponds to invariant pitching dynamic stability of the model, and the results are consistent with those without injected gases.
Key words: blunt cone; ablation; mass injection; dynamic stability; wind tunnel test
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