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首页> 外文期刊>Journal of Spacecraft and Rockets >Space Shuttle Solid Rocket Motor Plume Pressure and Heat Rate Measurements
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Space Shuttle Solid Rocket Motor Plume Pressure and Heat Rate Measurements

机译：航天飞机固体火箭发动机羽状压力和热速率测量

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摘要

The solid rocket booster main flame deflector at NASA Kennedy Space Center Launch Complex 39A was instrumented to measure heat rates, pressures, and temperatures on the final three space shuttle launches. Because the solid rocket booster plume is hot and erosive, a robust tungsten piston calorimeter was developed to compliment measurements made by off-the-shelf sensors. Witness materials were installed, and their melting and erosion response to the Mach 2,4000℉, 4 s duration plume was observed. The data show that the specification used for the design of the main flame deflector thermal protection system overpredicts heat rates by a factor of three and underpredicts pressures by a factor of two. The discovery of short-duration heating spikes that occur when aluminum oxide slag solidifies on the main flame deflector explains this heat rate overprediction. This study allows improvement of solid rocket motor launch site and test stand computational fluid dynamics models and the concomitant slag deposition heat transfer models.
机译：美国宇航局肯尼迪航天中心39A发射场的固体火箭助推器主挡火板被用来测量最后三个航天飞机发射的热率，压力和温度。由于固体火箭助推器羽流很热且易腐蚀，因此开发了坚固的钨活塞热量计，以补充现成的传感器进行的测量。安装了见证材料，观察到它们对24000℉马赫，持续4 s的羽流的熔化和侵蚀反应。数据表明，用于主导流板热保护系统的设计规范将热量率高估了三倍，而将压力低估了二倍。当氧化铝炉渣在主导流板上固化时出现的短时加热尖峰的发现解释了这种热量率的过高预测。这项研究可以改进固体火箭发动机的发射场和试验台的计算流体动力学模型以及随之而来的炉渣沉积传热模型。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2014年第1期|281-295|共15页
  • 作者

    Wulf von Eckroth; Leah Struchen; Thomas Trovillion; Rafael Perez; Shaun Nerolich; Chris Parlier;

  • 作者单位

    United Space Alliance, Kennedy Space Center, Florida 32780;

    United Space Alliance, Kennedy Space Center, Florida 32780;

    United Space Alliance, Kennedy Space Center, Florida 32780;

    United Space Alliance, Kennedy Space Center, Florida 32780;

    United Space Alliance, Kennedy Space Center, Florida 32780;

    NASA, Kennedy Space Center, Florida 32899;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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