CAJ | 학술논문

论述了空间碎片失效风险评估在航天器设计中的重要性,给出了自主开发的空间碎片风险评估系统(MODRAS)总体框架及图形用户界面.MODRAS分为空间碎片风险评估和微流星体风险评估两大模块,每个模块又包括M/OD环境模型、航天器建模、碰撞概率分析、失效概率分析以及航天器防护结构设计等功能模块.除了环境模型模块外,其他各功能模块均为共享模块,即可同时应用于空间碎片风险评估与微流星体风险评估.针对机构间空间碎片协调委员会(IADC)指定的单位立方体、单位球体及简单航天器3种标准工况,将MODRAS分析结果与美国航空航天局的BUMPER系统、欧洲空间局的ESABASE系统、德国MDPANTO系统以及航天五院MODAOST系统等国内外同类软件分析结果进行比较.结果表明,在微流星体环境下,MODRAS与BUMPER程序失效数分析结果相差在40%以内;而在空间碎片环境下,失效数分析结果最大相差8%,校验了MODRAS的分析精度.此外,还给出了3种标准工况遭遇M/OD的表面失效数分布.
논술료공간쇄편실효풍험평고재항천기설계중적중요성,급출료자주개발적공간쇄편풍험평고계통(MODRAS)총체광가급도형용호계면.MODRAS분위공간쇄편풍험평고화미류성체풍험평고량대모괴,매개모괴우포괄M/OD배경모형、항천기건모、팽당개솔분석、실효개솔분석이급항천기방호결구설계등공능모괴.제료배경모형모괴외,기타각공능모괴균위공향모괴,즉가동시응용우공간쇄편풍험평고여미류성체풍험평고.침대궤구간공간쇄편협조위원회(IADC)지정적단위립방체、단위구체급간단항천기3충표준공황,장MODRAS분석결과여미국항공항천국적BUMPER계통、구주공간국적ESABASE계통、덕국MDPANTO계통이급항천오원MODAOST계통등국내외동류연건분석결과진행비교.결과표명,재미류성체배경하,MODRAS여BUMPER정서실효수분석결과상차재40%이내;이재공간쇄편배경하,실효수분석결과최대상차8%,교험료MODRAS적분석정도.차외,환급출료3충표준공황조우M/OD적표면실효수분포.
The importance of M/OD failure risk assessment for spacecrafts design is analyzed. A graphical user interface technology based M/OD Risk Assessment System (MODRAS) is developed. It's frame chart of M/OD failure risk assessment system is presented, including two modules of orbital debris risk assessment and meteoroid risk assessment. Each module consists of functional modules for M/OD environment, the spacecraft geometry modeling, impact probability analysis, failure probability computing module, spacecraft shield design,etc. These functional modules are shared except the environment module. That is to say, they can be used in both orbital debris and meteoroid environment risk assessment. The system is calibrated by three standard cases of IADC specified. The results show that the computing precision of MODRAS is very good with precisions of similar software in different countries, such as BUMPER, ESABASE,MDPANTO and MODAOST. The discrepancy of failure number of MODRAS and BUMPER is less than 4% in the meteoroid environment.And the maximum discrepancy is 8% in the orbital debris ,environment. Therefore, the analytic precision of MODRAS is calibrated. The distribution of failure particles in the surface of cube, spbere and simple space station are given.