CAJ | 학술논문

随着航天技术的迅猛发展，为了实现高分辨率的对地观测，大口径、长焦距的空间相机已成为发展趋势。连接相机主镜和次镜的支撑结构，很大程度上影响相机的成像性能和稳定性，是光学系统的敏感环节。为了得到更好的成像品质，文章选择了筒式、三杆式与桁架式这3种支撑方案作为研究对象，通过工程分析软件对每种结构的设计参数进行优化并进行有限元分析，通过对结构的力学稳定性、热稳定性以及质量等因素的综合考虑，最终选择桁架式支撑结构为最优方案，更适合于大口径、长焦距相机的发展趋势，并提出了该种结构进一步优化的空间与方向。
수착항천기술적신맹발전，위료실현고분변솔적대지관측，대구경、장초거적공간상궤이성위발전추세。련접상궤주경화차경적지탱결구，흔대정도상영향상궤적성상성능화은정성，시광학계통적민감배절。위료득도경호적성상품질，문장선택료통식、삼간식여항가식저3충지탱방안작위연구대상，통과공정분석연건대매충결구적설계삼수진행우화병진행유한원분석，통과대결구적역학은정성、열은정성이급질량등인소적종합고필，최종선택항가식지탱결구위최우방안，경괄합우대구경、장초거상궤적발전추세，병제출료해충결구진일보우화적공간여방향。
With the rapid development of space technology, large-aperture and long-focal-length space camera has become a trend in order to achieve high-resolution earth observation. And the support structure of space camera that connects the primary mirror and secondary mirror, is a sensitive part of the optical system due to its large affect on the stability and image quality of the camera. In order to get better image quality, the three support schemes including cylinder, three-rod and truss, are studied in this paper with size optimization and finite element analysis on the engineering software. By considering the mechanical stability, thermal stabil-ity, weight and other factors, the truss support structure is the optimal solution that is more suited to the devel-opment of large aperture and long focal length of a space camera. Meanwhile, the paper proposes the scope and direction for further optimizing truss structure.