在航宇局的努力下,陆地卫星-2终于重获姿态控制,于五月初重新工作了。由于该卫星的偏航控制动量轮在去年11月停止了工作,所以它在工作了五年之后于今年一月份“退休了”。在其退役后,哥达德空间飞行中心开始进行一项大胆尝试,即用卫星和地磁场之间相互作用而产生的磁力矩来控制卫星的姿态。在此期间他们阶段性地启动已失灵的动量轮,其中的一个竟然被启动起来了。工程师们认为动量轮失灵 With NASA’s efforts, Landsat-2 finally regained its posture control and returned to work in early May. As the satellite’s yaw-controlled momentum wheel stopped its work in November last year, it had “retired” in January of this year after five years of work. After its retirement, Godad Space Flight Center embarked on a bold attempt to control the satellite’s attitude by using the magnetic moment created by the interaction between satellites and the geomagnetic field. In the meantime, they started stage by stage the failed momentum wheels, one of which was actually activated. Engineers think momentum wheel failure