ATTITUDE MOTION OF SPACECRAFT WITH GEOMETRICALLY DISTRIBUTED MULTIPLE LIQUID STORES

摘要

In this paper we develop vectorial equations of motion of a spacecraft which is equipped with multiple thrusters, control wheels, and liquid propellant storages. As equivalent mechanical models to describe the slosh motion of liquid in tanks, spherical pendulum models are adopted. Newton-Euler method is used to formulate full nonlinear equations of motion for a rigid-spacecraft with two propellant tanks and numerical simulations are conducted under the restricted conditions in order to check the appropriateness of the derived models.