On early Wednesday, the lunar bound manoeurve is completed by ISRO to guide Chandrayaan- 3 in 153km*163km orbit and set the stage for landing module separation. According to reports, it is determined that the successful firing of today needs a short time and put Chandrayaan -3 in 153km*163km orbit. Read more to know about the chandrayaan-3 landing module separation.
The chandrayaan-3 journey
The chandrayaan-3 comprises the lander, rover, and propulsion module. The main aim of the third moon mission in India is to land the lander on the Moon softly. As we know, the chandrayaan-2 mission failed as a lander known as Vikram crashed into the Moon.
As per ISRO, the lander is supposed to create a soft landing close to the Moon’s south pole on 23 August at 5:37 pm. The descending of the lander will start to the Moon from 100km height from the surface of the Moon. In this, the soft landing is an issue because it consists of the sequences of complex manoeurve that consist of fine and rough braking. It imagine the landing site region to landing done for hazard and safe-free zones.
Despite the soft landing, the six-wheeled rovers rolled out and carried out experiments on the surface of the lunar for the time of one lunar day, which is equal to 14 Earth days.
When the propulsion module start
When the lunar-bound manoeurve of chandrayaan-3 is completed, the preparations for the propulsion module start. With this, the lander module, Vikram, begins its separate Journey, said to ISRO.
Before landing module, It leaves 7 more days to land on 23 august on lunar surface. After the manoeurve on Wednesday, another manoeurve was performed by ISRO for the separation of the lander on Thursday, which followed the Vikram lander to put again in an elliptical orbit. Again, the ISRO carries the manoeurve to put module landing to achieve it.
Why the lander velocity reduces
The de boost manoeurve eventually put Vikram in orbit where apolune ( away from the Moon) is 100 km and perilune ( close to the Moon) is 30 km. The final landing will schedule from this orbit. Once the orbit, 30km*100km, has been completed, the most important part of the landing, the process of landing velocity reduction from a height of 30km to the final landing, said ISRO.
ISRO has to overcome the phase where the horizontal orientation of the spacecraft is required to change to vertical before Vikram creates the final descent on 23 August. On Wednesday, the 33 days of chandrayaan-3 are completed. After launch on 14 July, the five earth-bound manoeurve were completed between 15 July-25 July, which increased altitude to more than 1.2 lakh km at an away point from Earth on 1 August, the trans lunar injection( TLI).
It put in the path at 3.6 lakh km attitude towards the Moon before insertion of lunar orbit ( LOI) that put it in an elliptical orbit near to Moon on 5 August.
Conclusion
Before LOI, the chandrayaan-3 is kept in an elliptical orbit, with the various lunar bound manoeurve that reduce the apolune before putting the manoeurve in a circular orbit on Wednesday.
