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首页> 外文会议>AIAA Dynamics Specialists Conference, Apr 21-22, 1994, Hilton Head, SC >STRUCTURAL DYNAMICS OF THE DEPLOYABLE WIRE ANTENNA SYSTEM AND THE GEOTAIL ON-ORBIT OPERATION
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STRUCTURAL DYNAMICS OF THE DEPLOYABLE WIRE ANTENNA SYSTEM AND THE GEOTAIL ON-ORBIT OPERATION

机译：可展开线天线系统的结构动力学和在地轨道运行

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摘要

Even at the recent stage of space activities, deployment of structures in space is still among the most difficult showing several examples of failure and incompleteness due to technical and mechanical problems over past years. Emergency operations were actually executed for both the wire antenna deployment and the mast extension aboard the GEOTAIL spacecraft to finally get their complete configurations. The problem is further accentuated by the dimensions and flexibility of the wire antennas possibly resulting in wire vibrations as well as satellite attitude perturbations through in orbit events scheduled such as antenna and mast deployment, spin up and down operations, and attitude and orbit maneuver, which may lead to distortion of the attitude control accuracy and the scientific observation environment. In the study, inorbit operations associated with the wire deployment and the mast extension are reviewed and some of the typical flight data of practical importance are analyzed to reveal effects of such operations on the system response. To that end, an efficient algorithm for formulating equations of motion for this class of flexible systems has been established in a relatively general fashion.
机译：即使在太空活动的最近阶段，在太空中部署结构仍然是最困难的，其中显示出由于过去几年中的技术和机械问题而导致的失败和不完整的几个例子。实际上，对GEOTAIL航天器上的线状天线部署和桅杆扩展都执行了紧急操作，最终获得了完整的配置。有线天线的尺寸和灵活性进一步加剧了这个问题，这可能会导致有线振动以及通过预定的在轨事件（例如天线和天线杆部署，上下旋转操作以及姿态和轨道操纵）引起的卫星姿态扰动。可能会导致姿态控制精度和科学观察环境的失真。在这项研究中，对与导线布放和桅杆延伸相关的在轨操作进行了回顾，并对一些具有实际重要性的典型飞行数据进行了分析，以揭示此类操作对系统响应的影响。为此，已经以相对通用的方式建立了用于为这类柔性系统制定运动方程的有效算法。

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