摘要
为了研究尖化前缘局部稀薄气体效应对气动热环境的影响,对飞行器尖化前缘外形进行测热试验,获得了3种小尺寸前缘半径尖化前缘中心线热流分布规律,同时采用高空稀薄过渡区的气动热环境计算方法开展局部稀薄气体效应的研究。研究结果表明,当飞行器高度增大或局部尺寸减小时会出现稀薄气体效应,需要采用桥函数进行稀薄过渡区的热环境预测,以便更加准确地评估稀薄气体效应对气动热环境的影响。
The wind tunnel experiment of vehicle with small radius sharp leading edge is done.The heating distribution on the vehicle with three leading edge radii is obtained.The theory method of transition flow region is also studied to evaluate the influence of the local rarefied flow effect.The result shows that the rarefied flow effect should be considered when the altitude rises or the local dimension of the vehicle reduces.The bridge function is needed for heating environment prediction to evaluate the influence of the rarefied flow effect.
作者
高莹莹
陈政伟
谢飞
赵小程
杨凯威
Gao Ying-ying;Chen Zheng-wei;Xie Fei;Zhao Xiao-cheng;Yang Kai-wei(Beijing Institute of Aerospace Long March Vehicle,Beijing,100076)
