航天器转动轴遮热罩设计及仿真
|
摘要
在航天器转动遮热罩优化设计问题,为减少航天器转动轴处的能量散失,采用安装遮热罩和包覆多层隔热组件的方法,找到影响转动轴能量散失的主要因索,确定可应用于工程实际的遮热罩设计方案和多层包覆方式的合理性。首先给出遮热罩的基本结构并分析影响转动轴系统能量散失的主要参数。其次运用I-DEAS/TMG进行有限元仿真,得到转动轴系统能量散失与各变量之间的变化规律。最后依据极紫外成像仪俯仰轴上安装和未安装遮热罩的两种应用方案开展热平衡试验。试验和计算结果表明,安装遮热罩并包覆多层隔热组件后,俯仰轴能量散失比无热控措施时减少了53.6%。设计合理的遮热罩并包覆多层隔热组件,既保证转动机构的正常工作,也可有效地减少转动轴处能量的散失。
In order to decrease heat loss of the rotating shaft,a valid thermal shield was installed and multi-layer insulation(MLI) was wrapped on the rotating shaft of the spacecraft which can decrease energy loss effectively.Firstly,the structure of thermal shield and its parameters,which affect the energy lost from the rotating shaft,were studied.Secondly,the finite element simulate models were built with I-DEAS/TMG,the energy loss was calculated and the disciplinarian was discovered between energy lost and the parameters of the shaft subassembly.Thirdly,two cases of thermal balance experiment for the pitch shafts of an extreme ultraviolet imager were launched.The shafts were installed with thermal shields in the one case of experiment and uninstalled in another case.It is shown that the total lost energy of the pitch shaft with thermal shields and MLI wrapped can decrease about 53.6%.The thermal shield with optimized parameters and MLI wrapped can decrease energy loss of the rotating shaft and keep it run well in the space.
In order to decrease heat loss of the rotating shaft,a valid thermal shield was installed and multi-layer insulation(MLI) was wrapped on the rotating shaft of the spacecraft which can decrease energy loss effectively.Firstly,the structure of thermal shield and its parameters,which affect the energy lost from the rotating shaft,were studied.Secondly,the finite element simulate models were built with I-DEAS/TMG,the energy loss was calculated and the disciplinarian was discovered between energy lost and the parameters of the shaft subassembly.Thirdly,two cases of thermal balance experiment for the pitch shafts of an extreme ultraviolet imager were launched.The shafts were installed with thermal shields in the one case of experiment and uninstalled in another case.It is shown that the total lost energy of the pitch shaft with thermal shields and MLI wrapped can decrease about 53.6%.The thermal shield with optimized parameters and MLI wrapped can decrease energy loss of the rotating shaft and keep it run well in the space.
引文
[1]陈立恒,等.空间摄像机热控系统设计[J].光学精密工程,2012,20(3):556-562.
[2]范含林.空间环境对航天器热设计影响分析[J].航天器环境工程,2008,25(3):220-223.
[3]张林仙.采用遮热罩抽气式热电偶提高炉膛测温精度的分析与计算[J].计量与测试技术,2003-1:13-15.
[4]王林.考虑辐射换热计算的气缸温度场分析[J].汽轮机技术,2010,52(4):256-258.
[5]曹喜承,王忠华,刘晓燕.真空隔热油管传热性能研究[J].节能技术,2010,28(5):419-423.
[6]王理学,刘清良.高真空隔热油管隔热机理及隔热结构的研究[J].山东理工大学学报,2003,17(4):93-96.
[7]闵子建,葛洪川,孙伟.带内遮热板真空集热管研究[J].太阳能学报,2007,28(8):865-869.
[8]Jongmin Kim,Choonghyo Jang,Tae-Ho Song.Combined heat transfer in multi-layeredthermal shields for vacuum insulation panels;Theoretical/numerical analyses and experiment[J].Applied Energy,2012,94:295-302.
[9]李书胜,吴清文,杨献伟.月基望远镜热设计及热分析[J].光学技术,2011,37(1):81-84.
[10]杨世铭,陶文铨.传热学(第四版)[M].北京:高等教育出版社,2006.
[11]Theodore L Bergman,Adrienne S Lavine,Frank P Incropera,David P Dewilt.Fundamentals of Heat and Mass Transfer(seventh edition)[M].United States of America:John Wiley&Sons,Inc,2011.
[12]黄涛,等.空间相机接触热阻计算[J].中国光学与应用光学,2009,2(4):334-339.
[13]RL Edeson,et al.The mechanical and thermal design and analysis of the VISTA infrared camera[C].Proceeding of the International Society for Optics and Photonics,2004,5497:508-519.
[2]范含林.空间环境对航天器热设计影响分析[J].航天器环境工程,2008,25(3):220-223.
[3]张林仙.采用遮热罩抽气式热电偶提高炉膛测温精度的分析与计算[J].计量与测试技术,2003-1:13-15.
[4]王林.考虑辐射换热计算的气缸温度场分析[J].汽轮机技术,2010,52(4):256-258.
[5]曹喜承,王忠华,刘晓燕.真空隔热油管传热性能研究[J].节能技术,2010,28(5):419-423.
[6]王理学,刘清良.高真空隔热油管隔热机理及隔热结构的研究[J].山东理工大学学报,2003,17(4):93-96.
[7]闵子建,葛洪川,孙伟.带内遮热板真空集热管研究[J].太阳能学报,2007,28(8):865-869.
[8]Jongmin Kim,Choonghyo Jang,Tae-Ho Song.Combined heat transfer in multi-layeredthermal shields for vacuum insulation panels;Theoretical/numerical analyses and experiment[J].Applied Energy,2012,94:295-302.
[9]李书胜,吴清文,杨献伟.月基望远镜热设计及热分析[J].光学技术,2011,37(1):81-84.
[10]杨世铭,陶文铨.传热学(第四版)[M].北京:高等教育出版社,2006.
[11]Theodore L Bergman,Adrienne S Lavine,Frank P Incropera,David P Dewilt.Fundamentals of Heat and Mass Transfer(seventh edition)[M].United States of America:John Wiley&Sons,Inc,2011.
[12]黄涛,等.空间相机接触热阻计算[J].中国光学与应用光学,2009,2(4):334-339.
[13]RL Edeson,et al.The mechanical and thermal design and analysis of the VISTA infrared camera[C].Proceeding of the International Society for Optics and Photonics,2004,5497:508-519.