| An omnidirectional low
gain antenna was mounted on a 223.5 cm
tall mast next to the high gain antenna.
The overall height of the spacecraft was
289 cm. At the bottom center of the
spacecraft the television camera was
mounted on a scan platform. The octagonal
frame housed the electronic equipment,
cabling, midcourse propulsion system, and
attitude control gas supplies and
regulators. Most of the science
experiments were mounted on the outside
of the frame. Science instruments, in
addition to the TV camera, were a
magnetometer, dust detector, cosmic ray
telescope, trapped radiation detector,
solar plasma probe, and ionization
chamber/Geiger counter. .....Power was
supplied by 28,224 solar cells contained
in the four 176 x 90 cm solar panels,
which could provide 310 W at Mars. A
rechargeable 1200 W-hr silver-zinc
battery was also used for maneuvers and
backup.
|
