| 摘要 |
<p>In the present invention four thrusters (10,11,12,13) are provided as a group of thrusters for collision avoidance (9). These thrusters contain a component of translational thrust for collision avoidance injection in their respective outputs, and are capable of simultaneously generating posture control torque around two coordinate axes, which are orthogonal to a thrust axis, in order to maintain the directional stability of the thrust axis during the injection. When abnormality arises in a group of thrusters for ordinary use (4), collision avoidance is executed by replacing all the thrusters for ordinary use (4) by these thrusters for collision avoidance (9). <IMAGE></p> |
