MMS Spacecraft Deck with Flight Components
Shown here is the MMS spacecraft deck with several flight components installed. The long box with the flat red cover in the upper left corner is the battery. Continuing in a clockwise direction is the Power System and Engine Valve Drive Electronics System (PSEES); the smaller grey raised platform is an optical bench with two star trackers that help orient the spacecraft; the black box with red handles (bottom center) is the Command and Data Handling (C&DH) System; the next smaller black box is one of two transponders; to the left of that is a second optical bench with two more star trackers. The electrical harnesses connecting the components contain some 200 wires.
Page Last Updated: September 3rd, 2013
Page Editor: NASA Administrator