Analytical attitude prediction of spin stabilized spacecrafts perturbed by magnetic residual torque
Nenhuma Miniatura disponível
Data
2005-01-01
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
An analytical approach for spin-stabilized spacecraft attitude prediction is presented for the influence of the residual magnetic torques. Assuming an inclined dipole model for the Earth's magnetic field, an analytical averaging method is applied to obtain the mean residual torque every orbital period. The orbit mean anomaly is utilized to compute the average components of residual torque in the spacecraft body frame reference system. The theory is developed for time variations in the orbital elements, and non-circular orbits, giving rise to many curvature integrals. It is observed that the residual magnetic torque does not have component along the spin axis. The inclusion of this torque on the rotational motion differential equations of a spin stabilized spacecraft yields conditions to derive an analytical solution. The solution shows that residual torque does not affect the spin velocity magnitude, contributing only for the precession and the drift of the spin axis of the spacecraft. (c) 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.
Descrição
Palavras-chave
attitude propagation, spin stabilized satellite, residual magnetic torque, geomagnetic field
Como citar
Satellite Dynamics In the Era of Intredisciplinary Space Geodesy. Oxford: Elsevier B.V. Ltd, v. 36, n. 3, p. 460-465, 2005.