Content Features Why mars? Mission objectives Main frame elements of mission Pay loads Mission Plan Traces of Mars

9. Mission Plan developed the technologies required for
design, planning, management and operations of an
Interplanetary missions.
Geocentric Phase
• The spacecraft is injected into Elliptical parking orbit
by the launcher
• ISRO use s a method of travel called Hohmann
Transfer Orbit or minimum Energy Transfer Orbit to
send spacecraft from Earth to Mars
• Six main engines burns in this phase for six midnight
maneuvers .
• At the end of this phase the spacecraft is escaped
from Earth Sphere Of Influence(SOI). Earth SOI is
918347km.

10. Heliocentric Phase
• Spacecraft enters into Mars tangential orbit
• This phase depends on relative position of
Earth, Mars and Sun
• Such relative arrangement recur periodically
at interval of about 780 days.
Martian Phase
• The spacecraft is arrives at the Mars Sphere
Of Influence(SOI) [573473 KM from surface
of Mars]
• At the time of spacecraft reaches the closest
approach to Mars, It is captured into planed
orbit around Mars.