摘要
本文分析了机动再入飞行器因非定常空气动力流动引起的物面脉动压力环境,并根据高超声速无粘流计算的表面压力分布,给出了一套预测各种脉动压力环境统计特性的工程计算公式。算例表明,预测的均方根脉动压力、功率谱密度和交叉功率谱密度与实验值是一致的。
The surface fluctuating pressure environments of a maneuvering reentry vehicle resulting from unsteady aerodynamic flows have been investigated. According to surface pressure distribution calculated by hypersonic inviscid flow a set of prediction formulate of the statistical properties for the various fluctuating pressure environments have been given. Examples show that prediction results for the root-mean-square fluctuating pressure overall level, power spectral density, and cross-power spectral density are in good agreement with measurements.
出处
《空气动力学学报》
CSCD
北大核心
1991年第4期457-464,共8页
Acta Aerodynamica Sinica
关键词
航天器
脉动压力
激波
振荡
maneuvering reentry vehicle, fluctuating pressure, power spectral density, cross-power spectral density, shock wave oscillation.
