航天返回与遥感
航天返迴與遙感
항천반회여요감
SPACECRAFT RECOVERY & REMOTE SENSING
2012年
2期
34-41
,共8页
支撑结构%力学特性%有限元%三反离轴%空间相机
支撐結構%力學特性%有限元%三反離軸%空間相機
지탱결구%역학특성%유한원%삼반리축%공간상궤
supporting structure%mechanical properties%finite element method%off-axis TMA%space camera
在航天遥感领域,离轴三反射镜消像散光学系统（TMA）以大视场、无遮拦等特点被广泛运用。由于离轴TMA系统的特点以及空间相机在发射过程中经历的恶劣的力学环境,相机支撑结构的力学特性对于相机成像品质的保证具有至关重要的意义。文章用Solidworks建立了支撑结构的实体模型,并在此基础上建立了有限元模型。通过对4种结构构型方案的力学特性的分析比较,为相机光机结构设计打下了基础,对三反离轴相机支撑结构的工程设计具有一定的指导作用。
在航天遙感領域,離軸三反射鏡消像散光學繫統（TMA）以大視場、無遮攔等特點被廣汎運用。由于離軸TMA繫統的特點以及空間相機在髮射過程中經歷的噁劣的力學環境,相機支撐結構的力學特性對于相機成像品質的保證具有至關重要的意義。文章用Solidworks建立瞭支撐結構的實體模型,併在此基礎上建立瞭有限元模型。通過對4種結構構型方案的力學特性的分析比較,為相機光機結構設計打下瞭基礎,對三反離軸相機支撐結構的工程設計具有一定的指導作用。
재항천요감영역,리축삼반사경소상산광학계통（TMA）이대시장、무차란등특점피엄범운용。유우리축TMA계통적특점이급공간상궤재발사과정중경력적악렬적역학배경,상궤지탱결구적역학특성대우상궤성상품질적보증구유지관중요적의의。문장용Solidworks건립료지탱결구적실체모형,병재차기출상건립료유한원모형。통과대4충결구구형방안적역학특성적분석비교,위상궤광궤결구설계타하료기출,대삼반리축상궤지탱결구적공정설계구유일정적지도작용。
In the field of space remote sensing,the off-axis three-mirror reflective optical system is widely used due to its characteristics of wide field of view and no masking.Such characteristics and the bad mechanical environment which the space camera suffers during launching require the mechanical properties of the camera supporting structure to be robust enough to guarantee the camera imaging quality.This paper creates solid models of the supporting structure using software Solidworks,and then the corresponding FEA models are built up.Based on the created models,the mechanical properties of four structural configurations are analyzed and compared,which lay down the ground for the optical and structural design of the space camera,and provide instructions for the engineering design of the off-axis TMA camera supporting structure.
