rocket motor thrust determined satellite weight and desired orbit.
Two satellites launched in one launch vehicle for multi launch capability.
phase II DSCS satellites in synchronous equatorial orbits. solar cell panels power source.
inefficient panel solar cells without battery backup. No power when satellite is in eclipse.
idcsp satellites over 8500 solar cells on satellite surface. cells supply 42 watts. 32,000 solar cells
in Phase II DSCS provide 520 watts. nickel cadmium battery backup. solar cell-battery for
synchhronous communications satellites. Satellite orientation and continuous antenna orientation.
power from solar cells depends on orientation to sun. Satellite antenna must orient toward earth terminals.
spin stabilization used to meet satellite orientation requirements. Spin stabilization principle
direction of spin axis.
