大口径正馈构架反射器展开卸载系统设计  

Deployment unloading system design of large-aperture forward-feed truss reflector

作　　者：管乐超 张雷[1] 李白 徐小龙 朱佳龙[1] GUAN Yuechao;ZHANG Lei;LI Bai;XU Xiaolong;ZHU Jialong(China Academy of Space Technology(Xi'an),Xi′an710100,China)

机构地区：[1]中国空间技术研究院西安分院,西安710100

出　　处：《先进小卫星技术(中英文)》2025年第1期55-62,共8页Advanced Small Satellite Technology

摘　　要：星载大型可展开天线的重力卸载是地面验证天线展开能力的关键,国内外展开卸载系统大多采用主被动跟随式吊挂或支撑卸载的方式,无法满足大口径正馈构架反射器极快速展开运动过程的动态卸载需求.根据正馈构架反射器的运动特性,充分考虑大口径天线包带机构对天线展开的影响,提出了采用中心多点固定悬吊卸载的方法,并完成卸载最优尺寸的求解,采用等效卸载方式解决了包带空间复杂运动难以卸载的问题.通过动力学仿真分析及对9m大口径反射器样机展开试验,验证了所提出的卸载方法和卸载设计的正确性及有效性,为星载天线地面展开提供了参考.Gravity unloading of large deployable satellite antenna is the key to verifying the deployment capability of antenna on the ground.Active or passive following-hanging or supporting unloading methods are widely used in local or global deployment unloading systems,which cannot meet the dynamic unloading requirements during the rapid deployment motion process of largeaperture forward-feed truss reflectors.Based on the motion characteristics of forward-feed truss reflectors and fully considering the effect of large-aperture antenna banding mechanisms on antenna deployment,the central multi-point fixed suspension unloading method was proposed,along with the optimal size computation.The equivalent unloading method was also adopted to solve the problem that the complex spatial movement of the wrapped tape was difficult to unload.Through the dynamic simulation analysis and deployment test of a 9 m large-aperture truss reflector prototype,the correctness and effectiveness of the proposed unloading method and unloading design were verified.The research provides a reference for satellite antenna ground deployment.

关 键 词：星载天线 构架反射器 重力卸载 优化设计 试验 

分 类 号：V416[航空宇航科学与技术—航空宇航推进理论与工程]