戈壁地区浮空器的辐射热环境模型  

Radiation Thermal Environment Models for Aerostats in the Gobi Area

作　　者：李敏 宁辉[1] 孟小君 叶虎[1] 燕道华 侯恩东 LI Min;NING Hui;MENG Xiao-jun;YE Hu;YAN Dao-hua;HOU En-dong(Northwest Institute of Nuclear Technology,Xi'an 710024,China)

机构地区：[1]西北核技术研究所,西安710024

出　　处：《现代应用物理》2019年第1期83-86,共4页Modern Applied Physics

基　　金：高分辨对地观测重大专项支持项目

摘　　要：在分析太阳直射辐射、地面长波辐射和天空长波辐射理论估算模型的基础上,利用地面辐射强度测量系统对中国西北戈壁地区的辐射热环境进行了实地测量,根据实测地面数据对经验模型中的关键系数进行了拟合修正,得到了适用于戈壁地区的浮空器辐射热环境模型,将该模型应用于浮空器热特性的仿真计算中,计算得到的氦气温度与实验值之间最大相差仅为5.87K,表明该模型在计算高空辐射强度时稳定可靠,满足计算要求。Based on the analysis of the theoretical estimation models of the direct solar radiation,ground infrared radiation and sky infrared radiation,the radiation thermal environment of the Gobi area in northwest China is investigated by means of ground radiation intensity measurement.The key coefficients in the empirical models are fitted and corrected by using the measured data.A radiation thermal environment model is obtained,which is applied to the simulation of the thermal characteristics for aerostats.The maximum deviation between the calculated temperature of helium gas and the corresponding experimental value is only5.87 K,which indicates that the model is stable and reliable in calculating the radiation intensity at high altitude,and meets the calculation requirements.

关 键 词：戈壁地区 浮空器 热环境 太阳辐射 长波辐射 

分 类 号：V27[航空宇航科学与技术—飞行器设计] V219