北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (3): 542-548.doi: 10.13700/j.bh.1001-5965.2017.0221

• 论文 • 上一篇    下一篇

基于Kriging模型的浮空器氦气昼夜温差最优化

林康1, 马云鹏1, 武哲1, 王强2   

  1. 1. 北京航空航天大学航空科学与工程学院, 北京 100083;
    2. 中国航天空气动力技术研究院, 北京 100074
  • 收稿日期:2017-04-11 出版日期:2018-03-20 发布日期:2018-03-30
  • 通讯作者: 马云鹏 E-mail:myp@buaa.edu.cn
  • 作者简介:林康,男,博士研究生。主要研究方向:浮空器热力学;马云鹏,男,博士,讲师,硕士生导师。主要研究方向:浮空器总体设计;武哲,男,博士,教授,博士生导师。主要研究方向:浮空器总体设计;王强,男,博士,研究员,博士生导师。主要研究方向:飞行器气动分析。

Optimization of aerostat helium temperature differences between day and night based on Kriging model

LIN Kang1, MA Yunpeng1, WU Zhe1, WANG Qiang2   

  1. 1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
    2. China Academy of Aerospace Aerodynamics, Beijing 100074, China
  • Received:2017-04-11 Online:2018-03-20 Published:2018-03-30

摘要: 分析浮空器氦气昼夜温差时通常将整个囊体蒙皮涂层设置为同一种材料,分析材料的吸收率与发射率对氦气昼夜温差的影响。为进一步减小氦气昼夜温差,提出了将囊体分为迎光面和背光面,迎光面采用吸收率低的材料,背光面采用发射率高的材料。建立了囊体热力学模型,采用Kriging模型对囊体不同部位的材料特性进行优化,其基本思想是将囊体划分为48个部分,采用拉丁超立方体方法进行抽样,进行热力学分析得到样本的响应,以此建立Kriging近似模型。经过该方法优化后发现,氦气的昼夜温差减小到28.6 K,比传统的分析减少7.7%。

关键词: 浮空器, 热分析, Kriging模型, 蒙皮热特性, 氦气昼夜温差

Abstract: Considering the entire skin coating of aerostat envelop materials as one material, the effect of absorption and emission rate of aerostat envelop materials on helium temperature differences between day and night is investigated. In order to further reduce helium temperature differences between day and night, in this paper, aerostat envelop materials are divided into illuminated side with materials of low absorption rate and backlight side with materials of high emission rate. Under the established thermal analysis model, material properties in different parts of aerostat envelop materials are optimized with the method of Kriging model. It holds the thoughts that aerostat envelop materials can be divided into 48 parts, Latin hyper-cube method is used to do sampling, and sample response can be obtained through thermal analysis so as to build a Kriging approximate model. As the result, it shows that the helium temperature difference between day and night is reduced to 28.6 K, which is 7.7% less than the traditional ways of analysis.

Key words: aerostat, thermal analysis, Kriging model, skin thermal characteristics, helium temperature differences between day and night

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