PRELIMINARY STUDY ON ORBIT MAINTENANCE OF HALO ORBITS UNDER CONTINUOUS DISTURBANCE

摘要

Preliminary mission design for the next-generation infrared astronomical mission, SPICA, which is to be launched into the Sun-Earth L2 Halo orbit, was studied. Our specific focus is on investigating the impact of translational force (unloading ΔV), caused by the thruster unloading for accumulated angular momentum on the spacecraft reaction wheels, with respect to the orbit maintenance. In addition, suppression methods for orbital disturbances caused by the unloading ΔV are proposed and validated.