航天器工程
航天器工程
항천기공정
SPACECRAFT ENGINEERING
2012年
1期
110-115
,共6页
于新刚%范宇峰%黄家荣%满广龙
于新剛%範宇峰%黃傢榮%滿廣龍
우신강%범우봉%황가영%만엄룡
载人航天器%单相流体回路%热控%低温%地面试验
載人航天器%單相流體迴路%熱控%低溫%地麵試驗
재인항천기%단상류체회로%열공%저온%지면시험
manned spacecraft%single-phase fluid loop%temperature control%low temperature%ground test
为了对流体回路系统设计参数确定提供指导,通过地面试验方法,研究了低温和外界环境变化时单相流体回路的阻力特性、工质补偿、控温算法等。介绍了地面试验系统的组成、试验方法和相关试验结果,并重点对外界环境突变时的控温结果、控温目标点与控温装置作用点分离时的控温震荡以及低温下补偿器的补偿能力测试结果进行了分析。试验结果表明,在外界环境剧烈变化时会出现温度过冲,过冲可达到10 oC;此外,由于控温点和控温装置作用点的分离引起的相位差,会导致系统控温失败。这些结果对载人航天器流体回路的泵、换热器设计以及工作状态分析具有一定的参考作用。
為瞭對流體迴路繫統設計參數確定提供指導,通過地麵試驗方法,研究瞭低溫和外界環境變化時單相流體迴路的阻力特性、工質補償、控溫算法等。介紹瞭地麵試驗繫統的組成、試驗方法和相關試驗結果,併重點對外界環境突變時的控溫結果、控溫目標點與控溫裝置作用點分離時的控溫震盪以及低溫下補償器的補償能力測試結果進行瞭分析。試驗結果錶明,在外界環境劇烈變化時會齣現溫度過遲,過遲可達到10 oC;此外,由于控溫點和控溫裝置作用點的分離引起的相位差,會導緻繫統控溫失敗。這些結果對載人航天器流體迴路的泵、換熱器設計以及工作狀態分析具有一定的參攷作用。
위료대류체회로계통설계삼수학정제공지도,통과지면시험방법,연구료저온화외계배경변화시단상류체회로적조력특성、공질보상、공온산법등。개소료지면시험계통적조성、시험방법화상관시험결과,병중점대외계배경돌변시적공온결과、공온목표점여공온장치작용점분리시적공온진탕이급저온하보상기적보상능력측시결과진행료분석。시험결과표명,재외계배경극렬변화시회출현온도과충,과충가체도10 oC;차외,유우공온점화공온장치작용점적분리인기적상위차,회도치계통공온실패。저사결과대재인항천기류체회로적빙、환열기설계이급공작상태분석구유일정적삼고작용。
In order to offer guidance to parameter decision in fluid loop design,the resistance,fluid supply and control strategy of a single-phase fluid loop are investigated experimentally at low temperature and varied environment.Build-up of test bed as well as test method and result is presented in this paper.The emphasis is to simulate the temperature overshoot due to variation of spacecraft attitude and temperature osillation because of the distance between temperature sensor and actuator as well as the supply of working fluid at low temperature. The test results show that temperature overshoot can reach 10℃ while environment varies dramatically.Also,a failure of temperature control would occur once set-point is far away from the three-way valve point.The results can provide guidance to design of pump and heat exchanger,and performance analysis of fluid loop.
