Chandrayaan-3 in the last stage, today the lander-propulsion module will be separated; Will land on the moon on 23rd Aug
Chandrayaan-3's orbit was changed for the fourth time on Wednesday and it successfully entered the fifth and final phase of the Moon's orbit.
Chandrayaan-3's orbit was changed for the fourth time on Wednesday and it successfully entered the fifth and final phase of the Moon's orbit. It came even closer to the surface of the Moon. With this, the spacecraft has completed all its maneuvers related to the Moon.
ISRO tweeted, Today's successful firing (which was necessary for a short time) has placed Chandrayaan-3 in a 153 km x 163 km orbit around the Moon. With this, all the entry phases of the lunar advance were completed. Now preparations are on for the separation of the propulsion and lander modules (which include the lander and the rover). The lander and propulsion module will separate on Thursday.
Reached the moon like this
After lifting off from Sriharikota on July 14, Chandrayaan-3 went through several phases in three weeks. On August 5, it entered the moon's orbit for the first time. After this, Chandrayaan-3 entered different phases on 6, 9 and 14 August. In these three weeks, ISRO placed Chandrayaan-3 in orbits far away from Earth.
Speed will be slowed down by deboost
According to ISRO sources, after separation, the lander will be deboosted (slowing down process) to place it in an orbit from which perilune (closest point to the moon) is 30 km and apollune (farthest point to the moon) is 30 km. ) is 100 km away. On August 23, soft landing will be attempted on the south polar region of the Moon.
Lesson has been learned from Chandrayaan-2's mistake: Somnath
ISRO chief S Somnath said that this time we will not repeat the mistake of Chandrayaan-2. The velocity at the beginning of the landing process is approximately 1.68 km per second, but this velocity is horizontal to the lunar surface. Here Chandrayaan-3 is tilted almost 90 degrees, it has to be vertical so this whole process of changing from horizontal to vertical is a very interesting calculation mathematically. We have done a lot of simulations. Last time we had a problem here. Besides, we have to ensure that fuel consumption is low, distance calculation is correct and all algorithms are working properly, Somnath said.