航空学报 > 2022, Vol. 43 Issue (S2): 138-151   doi: 10.7527/S1000-6893.2022.27729

跨越第二宇宙速度的膨胀管风洞研制

吕治国1(), 龚红明1,2, 常雨1,2, 廖振洋1, 钟涌1   

  1. 1.中国空气动力研究与发展中心 超高速空气动力研究所,绵阳 621000
    2.中国空气动力研究与发展中心 跨流域空气动力学重点实验室,绵阳 621000
  • 收稿日期:2022-06-30 修回日期:2022-07-27 接受日期:2022-08-16 出版日期:2022-12-25 发布日期:2022-08-31
  • 通讯作者: 吕治国 E-mail:lzgde2003@126.com
  • 基金资助:
    国家级项目

Development of an expansion tunnel with gas flow speed greater than escape velocity

Zhiguo LYU1(), Hongming GONG1,2, Yu CHANG1,2, Zhenyang LIAO1, Yong ZHONG1   

  1. 1.Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China
    2.Laboratory of Aerodynamics in Multiple Flow Regimes,China Aerodynamics Research and Development Center,Mianyang 621000,China
  • Received:2022-06-30 Revised:2022-07-27 Accepted:2022-08-16 Online:2022-12-25 Published:2022-08-31
  • Contact: Zhiguo LYU E-mail:lzgde2003@126.com
  • Supported by:
    National Level Project

摘要:

为了解决再入飞行器涉及到的高焓真实气体效应、辐射传热等关键气动问题,满足中国下一代航天飞行器研制对高焓环境模拟的需求,中国空气动力研究与发展中心建成了一座工程应用型的高焓膨胀管风洞。重点介绍了风洞的一些关键技术及解决途径,包括气动设计、活塞驱动、大口径耐冲击夹膜机构设计、双滚动浮动支撑运行、配套高焓瞬态测试技术,风洞流场调试的初步结果及测试技术验证等情况。流场调试结果表明:高焓膨胀管风洞实现的关键技术指标气流速度、焓值和有效试验时间范围分别是1.63~11.50 km/s、1.5~71.7 MJ/kg和0.1~1.1 ms,该风洞具备了进行高焓真实气体效应问题研究的地面试验模拟能力。

关键词: 膨胀管风洞, 活塞驱动, 高焓真实气体效应, 轻质气体驱动, 流场调试

Abstract:

In order to solve the high enthalpy real gas effect, radiation heat transfer and other key aerodynamic problems involved in reentry vehicles, and meet the needs of next generation spacecraft development for high enthalpy environment simulation, China Aerodynamics Research and Development Center has built a productive piston-driven high enthalpy expansion tunnel. This paper mainly introduces some key technologies and solutions of this expansion tunnel, including aerodynamic design, piston drive, and design of large-diameter impact resistant diagram, matching high enthalpy transient testing and other technologies, preliminary validation and calibration results. The flow field debugging results show that the key technical indicators of the high enthalpy expansion tunnel, such as gas flow velocity, enthalpy and effective test time range, are 1.63-11.50 km/s, 1.5-71.7 MJ/kg and 0.1-1.1 ms, respectively. This expansion tunnel has the ground test simulation capability to study the real gas effects of high enthalpy.

Key words: expansion tunnel, piston drive, high enthalpy real gas effect, light gas drive, flow calibration

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