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Tether Dynamic Research of Electrodynamic Tether Deorbiting System
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KONG Xianren,XU Dafu,LIAO Jun,WANG Benli
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(Research Center of Satellite Technology, Harbin Institute of Technology, Harbin 150001, China)
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Abstract Considering inflecting effect, this paper presents a flexible cable model, which can be used for analyzing the dynamic behavior of the electrodynamic tether (EDT) deorbiting system. The model can describe tether inflecting and bowing under action of electrodynamic drag and gravity gradient induced force, and the influences on electro motive force and electrodynamic drag. Two mathematical simulations are employed to show the differences between the flexible cable model and the drumbell model. Vibration of the EDT system during deorbiting course is discussed. The simulation result shows that vertical response is the main vibration of EDT.
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Received: 15 December 2009
Published: 30 November 2010
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