Orbital perturbations of tethered satellite systems

Astronomy and Astrophysics – Astronomy

Scientific paper

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Librational Motion, Satellite Perturbation, Tethered Satellites, Vibration Mode, Satellite Networks, Space Shuttles

Scientific paper

The stability of long tethered satellite systems is analyzed on the basis of the equations for coupled librational and vibrational motion in the Lagrangian formulation. The variables characterizing the orbital motion are expanded in perturbation series, and the first-order perturbations are analyzed. A numerical example is treated, considering a Space Shuttle/subsatellite system with a tether 1 mm in diameter and density of 2 kg/km with length varying from 1 to 100 km. The variation of the amplitude of resonant oscillatory perturbation after one year, caused by longitudinal vibrations, is calculated for various altitudes and cable lengths.

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