The
flight system is launched on a Delta II-7925 launch vehicle which includes a payload
assist module (PAM)-D upper stage, from the Cape Canaveral Air Station. The mission launch
window is a 29-day period beginning on December 2, 1996.
After launch, the spacecraft requires 6 to 7 months to reach Mars,
depending upon the exact launch date. During this phase, a series of four trajectory
correction maneuvers (TCMs) are performed, in order to fine tune the flight path.
Tracking, telemetry, and command operations with the spacecraft are conducted using the
giant dish antennas of the NASA/JPL Deep Space Network. Upon arrival at Mars on July
4, 1997, the spacecraft will enter martian atmosphere, and then deploy the parachute,
rocket braking system, and air bag systtem for a soft, upright landing. At this
point the primary
data-taking phase begins, and
continues for 30 martian days or sols (24.6 hours).
During this time, the microrover is deployed and operated for at least
7 sols. If the lander and rover continue to perform well at the end of this period,
an extended mission may continue for up to one martian year for the lander, and the
microrover for up to 30 sols.