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Indexed by:期刊论文

Date of Publication:2008-09-01

Journal:ACTA ASTRONAUTICA

Included Journals:SCIE、EI、Scopus

Volume:63

Issue:5-6

Page Number:673-681

ISSN No.:0094-5765

Key Words:Hill's problem; Halo orbits; multi-tethered satellite formations; dynamic simulation

Abstract:The nonlinear coupling (not linearized) dynamics of multi-tethered satellite formations is presentes, in which the parent satellite follows three-dimensional larger Halo orbits centered about the second libration point of the Sun-Earth system. We develop the dynamic model of system inHill's problem. The system is arranged in a hub-spoke configuration (a main satellite in the hub and n tethers connecting n subsatellites to the hub in a spoke configuration). The numerical simulaitons of the coupling motion of the parent satellite and tether librations are carried out for a three-satellite case. The stability characteristics of the tethered formation is compared with that of the free formation in the same initial locaitons, and the free dynamics of spinning multi-tethered systems in the required larger Halo orbits is studied. The numerical results demonstrate that the different initial spinning rate and lenghts of tethers have some impact on the stability of system. Crown Copyright (c) 2008 Published by Elsevier Ltd. All rights reserved.