To nadir

Mission: Communications Orbit Geosynchronous Payload: Communications transponder; Earth coverage horn antennas, and steerable pencil beam antennas Configuration Features:

- Equipment Compartment 3 m dia cylinder, 42 m long

- Solar Array Body mounted on cylinder

- Appendages: Despun antenna platform witt) steerable parabolic antennas

- Attitude control: Spin-stabilized, spin axis normal to orbit plane

Weight: 523 kg

Power: 535 W BOL, 360 W EOL

Fig. 10-1. Typical Spacecraft Showing Different Configuration Options. FOV = field-of-view; BOL = beginnlng-of-life; EOL = end-of-tife.

B. 3-Axls-Stablllzed Spacecraft

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