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伽利略号探测器于1989年11月9～11日进行了首次轨道修正机动(TCM),精度比预期的要高。该探测器运行正常,只出现过少数异常现象。 伽利略号有四台“脉冲”式机动微调发动机,计划从发射到进入木星轨道的6年中要进行28次轨道修正机动,共需135个工作日。 微调发动机装接在探测器的旋转部分,如果脉冲过长,微调发动机不仅会撞击不旋转部分上的高灵敏度仪器,而且推力也会偏离正确的方向,所以它的脉冲限制在0.933～1.2秒,每圈启动一到二次,每次间隔19秒。 计划用于轨道修正的推进剂重16.6公斤,预计它产生的加
The Galileo probe was first instrumented in orbital motion (TCM) on November 9-11, 1989, with higher-than-expected accuracy. The detector is operating normally with only a few exceptions. The Galileo has four “pulsing” motorized trimmer engines and plans to maneuver 28 orbital maneuvers 28 to 135 working days from launch to Jupiter orbit. Fine tune the engine attached to the rotating part of the detector, if the pulse is too long, fine-tune the engine will not only hit the non-rotating part of the high-sensitivity instruments, and the thrust will deviate from the correct direction, so its pulse limit in 0.933 to 1.2 seconds, Start each turn one or two times, each interval of 19 seconds. The propellant planned for orbit correction weighs 16.6 kg and is expected to produce plus