气体质量引射对钝锥俯仰特性的影响  

Effect of gas mass injection on pitching characteristics of blunt cone

作　　者：梁彬[1] 赵俊波[1] 付增良[1] 周家检[1] 周平 张石玉[1] 孙玮琪 LIANG Bin;ZHAO Junbo;FU Zengliang;ZHOU Jiajian;ZHOU Ping;ZHANG Shiyu;SUN Weiqi(China Academy of Aerospace Aerodynamics,Beijing 100074,China)

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《航空学报》2025年第3期260-268,共9页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(U23B2065)。

摘　　要：采用烧蚀气体质量引射与运动耦合风洞试验技术,通过在钝锥模型表面施加气体引射作用,研究气体引射作用对钝锥动稳定性等气动特性的影响规律。在名义马赫数6.0的条件下开展试验,引射气体介质分别为空气、氩气、氦气。风洞试验研究结果表明:引射气体质量流量升高,产生较小量的低头力矩;引射作用耦合模型运动周期性变化时,模型俯仰动稳定性导数变化规律明显;引射流量保持恒定时模型俯仰动稳定性不变,结果与无引射作用时一致。Using the coupled wind tunnel test technology of ablation gas mass injection and motion,we study the in⁃fluence 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 mo⁃ment;the coupling of the mass flow rate of the injected gas with the periodically changing model motion leads to differ⁃ent pitching dynamic derivatives with an obvious change pattern;a constant mass flow rate of the injected gas corre⁃sponds to invariant pitching dynamic stability of the model,and the results are consistent with those without injected gases.

关 键 词：钝锥 烧蚀 质量引射 动稳定性 风洞试验 

分 类 号：V211.78[航空宇航科学与技术—航空宇航推进理论与工程]