航天器环境工程
航天器環境工程
항천기배경공정
SPACECRAFT ENVIRONMENT ENGINEERING
2015年
2期
206-210
,共5页
贺卫东%党海燕%鲁志刚%许明艳%赵辉
賀衛東%黨海燕%魯誌剛%許明豔%趙輝
하위동%당해연%로지강%허명염%조휘
真空羽流%羽流导流%模拟试验%探测器
真空羽流%羽流導流%模擬試驗%探測器
진공우류%우류도류%모의시험%탐측기
vacuum plume%plume conducting%simulation test%probe
随着载人航天、深空探测的发展,探测器的地外天体发射起飞越来越多。发动机喷射的羽流所诱发的冲击振动以及反溅气流对上升级的气动力干扰,均对探测器的起飞稳定性造成不利的影响,同时也对探测器产生一定的热冲击效应。文章结合真空羽流场的流动特点和目前的研究现状,提出了基于地外天体起飞的真空羽流导引技术的研究思路、研究方法和研究路线;针对羽流导引方案,采用数值仿真和地面模拟试验相结合的方法进行了评价分析,确定了最优方案。真空羽流导引技术研究方案在某型号项目中的实施取得了良好的效果,证明了本研究思路的正确性。
隨著載人航天、深空探測的髮展,探測器的地外天體髮射起飛越來越多。髮動機噴射的羽流所誘髮的遲擊振動以及反濺氣流對上升級的氣動力榦擾,均對探測器的起飛穩定性造成不利的影響,同時也對探測器產生一定的熱遲擊效應。文章結閤真空羽流場的流動特點和目前的研究現狀,提齣瞭基于地外天體起飛的真空羽流導引技術的研究思路、研究方法和研究路線;針對羽流導引方案,採用數值倣真和地麵模擬試驗相結閤的方法進行瞭評價分析,確定瞭最優方案。真空羽流導引技術研究方案在某型號項目中的實施取得瞭良好的效果,證明瞭本研究思路的正確性。
수착재인항천、심공탐측적발전,탐측기적지외천체발사기비월래월다。발동궤분사적우류소유발적충격진동이급반천기류대상승급적기동력간우,균대탐측기적기비은정성조성불리적영향,동시야대탐측기산생일정적열충격효응。문장결합진공우류장적류동특점화목전적연구현상,제출료기우지외천체기비적진공우류도인기술적연구사로、연구방법화연구로선;침대우류도인방안,채용수치방진화지면모의시험상결합적방법진행료평개분석,학정료최우방안。진공우류도인기술연구방안재모형호항목중적실시취득료량호적효과,증명료본연구사로적정학성。
Along with the development of manned space explorations and deep space explorations, the technology is developed for a probe taking off from a celestial body outside the earth. A high-speed plume is ejected from the engine nozzle. The vibration induced by the impact of the plume on the rising pad and the aerodynamic interference on the probe because of the backflow of the plume may affect the rising stability greatly. In the meantime, the thermal shock on the probe is produced. The plume swells freely in vacuum with different flow characteristics than the ground-based launching gas flow. Therefore, the plume may have deeper and wider influences and warrant an urgent study of the vacuum plume diversion technique. Based on the flow characteristics of the plume and the current research results, this paper proposes to study the probe taking off from the lunar surface, based on the vacuum plume diversion technique, to turn the passive protection to the active prevention. It is suggested that the numerical simulation and the ground simulation test are combined.