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Modern developments in hypersonic wind tunnels

机译:高超音速风洞的现代发展

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摘要

The development of new methods of producing hypersonic wind-tunnel flows at increasing velocities during the last few decades is reviewed with attention to airbreathing propulsion, hypervelocity aerodynamics and superorbital aerodynamics. The role of chemical reactions in these flows leads to use of a binary scaling simulation parameter, which can be related to the Reynolds number, and which demands that smaller wind tunnels require higher reservoir pressure levels for simulation of flight phenomena. The use of combustion heated vitiated wind tunnels for propulsive research is discussed, as well as the use of reflected shock tunnels for the same purpose. A flight experiment validating shock-tunnel results is described, and relevant developments in shock tunnel instrumentation are outlined. The use of shock tunnels for hypervelocity testing is reviewed, noting the role of driver gas contamination in determining test time, and presenting examples of air dissociation effects on model flows. Extending the hypervelocity testing range into the superorbital regime with useful test times is seen to be possible by use of expansion tube/tunnels with a free piston driver.
机译:在过去的几十年中,研究了以高速度产生高超音速风洞流的新方法的发展,并着重研究了呼吸推进,超高速空气动力学和超轨道空气动力学。化学反应在这些流中的作用导致使用二进制比例缩放模拟参数,该参数可能与雷诺数有关,并且要求较小的风洞需要较高的储层压力水平才能模拟飞行现象。讨论了将燃烧加热的风洞用于推进研究,以及将反射激波隧道用于相同目的。描述了验证冲击隧道结果的飞行实验,并概述了冲击隧道仪器的相关发展。审查了冲击隧道在超高速测试中的使用,指出了驱动气体污染在确定测试时间中的作用,并举例说明了空气离解对模型流量的影响。通过使用带有自由活塞驱动器的膨胀管/隧道,可以将超高速试验范围扩展到具有有效试验时间的超轨道状态。

著录项

  • 来源
    《The Aeronautical Journal》 |2006年第1103期|p.21-39|共19页
  • 作者

    R. J. Stalker;

  • 作者单位

    Centre for Hypersonics University of Queensland Brisbane, Autralia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空;
  • 关键词

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