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Boundary Layer/Streamline Surface Catalytic Heating Predictions on Space Shuttle Orbiter

机译:航天飞机轨道飞行器边界层/流线表面催化加热预测

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This paper describes the analysis of localized catalytic heating effects to the U.S. Space Shuttle Orbiter thermal protection system. The analysis applies to the high-temperature reusable surface insulation on the lower fuselage and wing acreage, as well as the reinforced carbon-carbon on the nose cap, chin panel, and wing leading edge. The objective was to use a modified two-layer approach to predict the catalytic heating effects on the Orbiter windward thermal protection system assuming localized highly catalytic or fully catalytic surfaces. The method incorporated the boundary layer integral matrix procedure-kinetic code with streamline inputs from viscous Navier-Stokes solutions to produce heating rates for localized fully catalytic and highly catalytic surfaces as well as for nominal partially catalytic surfaces (either reinforced carbon-carbon or reaction cured glass) with temperature-dependent recombination coefficients. The highly catalytic heating results showed very good correlation with Orbiter experiments STS-2, -3, and -5 centcrline and STS-5 wing flight data. Recommended catalytic heating factors were generated for use in future shuttle missions to perform quick-time atmospheric reentry analysis of damaged or repaired thermal protection system areas. The catalytic factors are presented along streamlines and as a function of stagnation enthalpy for use with arbitrary shuttle trajectories.
机译:本文介绍了对美国航天飞机轨道飞行器热保护系统的局部催化加热效应的分析。该分析适用于下机身和机翼区域的高温可重复使用的表面隔热材料,以及机头盖,下巴面板和机翼前缘上的增强碳-碳纤维。目的是使用一种改进的两层方法来预测对局部高催化或完全催化表面的轨道飞行器迎风热保护系统的催化加热效果。该方法将边界层积分矩阵过程动力学代码与粘性Navier-Stokes解决方案的流线输入相结合,以产生局部完全催化和高催化表面以及名义部分催化表面(增强碳-碳或反应固化)的加热速率玻璃),并具有与温度相关的重组系数。高度催化的加热结果显示与Orbiter实验STS-2,-3和-5 centcrline和STS-5机翼飞行数据具有很好的相关性。产生了推荐的催化加热因子,以供将来的航天飞机飞行任务使用,以对受损或维修的热保护系统区域进行快速的大气再入分析。催化因子沿流线显示,并随停滞焓的变化而变化,可与任意穿梭轨迹一起使用。

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