LADEE Project Manager Update: Perigee Maneuver 1 Complete
The major activities this past week included testing the LADEE main engine for the first time. This was done in a maneuver called Apogee Maneuver-1 (AM-1). We originally planned to perform AM-1 on Tuesday, Sept 10, but when we were doing thermal conditioning rolls prior to AM-1, the spacecraft went into Safe Mode because of a combination of the roll rate and an alignment error between the two star tracker camera heads. We cancelled the planned AM-1 while we worked on the issue, and rescheduled it for the next day. The alignment calibration of the star tracker heads was updated, the thermal roll rate adjusted, and the revised AM-1 burn was successfully completed 4 p.m. PDT Sept. 11.