GPM Checks Out Thruster Performance

Today, the Global Precipitation Measurement mission Core Observatory successfully fired its thrusters for five seconds to check out the thruster performance. This type of maneuver, called a delta-V, changes the velocity of the spacecraft to adjust the altitude of its orbit. Today's delta-V resulted in only a very slight change in the orbit, but will help the GPM team assess and calibrate the thruster performance.

GPM Core Activating Thrusters

Following yesterday’s activities with the two science instruments associated with the Global Precipitation Measurement core observatory, the flight control team’s attention today is focused on the observatory’s onboard maneuvering thrusters.

The satellite has a dozen thrusters: four forward and eight aft. The flight team is activating and initializing the thrusters over the course of today. A brief (5 second) propulsion burn to further calibrate the thrusters is planned for early this week.

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