After launch, both the orbiter and lander with the two rovers will transfer into the moon flight trajectory. The mission sequence thereafter will be as follows:
- Separation of the lander and the orbiter.
- Lander and rover shift to 100 km X 100 km lunar orbit which is expected to be an extremely critical for the mission.
- Transfer into the pre-landing moon orbit which is expected to be 18 km X 100 km
- As the lander with the rover heads towards the South Pole Aitkin, it will take a turn at one point, which will be followed by the activation of its altimeter.
- The vertical descent towards South Pole Aitkin will start when the lander is 2100 meters above the surface of the moon. At this point the precision braking phase will be initiated.
- While flying down vertically, the Doppler equipment on board the lander will start gathering data.
- When it comes down to 700 meters above the moon’s surface, there will be propulsion ignition in the high thrust mode.
- When the lander descends to an altitude of 20 meters above the lunar surface there will be propulsion ignition in the low thrust mode preparing for a soft landing.
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Chandrayaan - II