Chandrayaan-3 has left its orbit around the Earth. And, is now on a path that will lead it to the Moon. This path is called the Trans Lunar Trajectory. Between 12:03 to 12:23 midnight of August 1, 2023, it was put on the Trans Lunar Trajectory on the way to the moon. This journey will be of about 5 days. The next step of Chandrayaan-3 is the moon.
Now on August 5, 2023, between 7 to 7:30 pm, Chandrayaan-3 will be put in the first orbit of the Moon. In the language of science, the process of Lunar-Orbit Insertion will be completed.
ISRO chairman S. Somnath (S. Somnath) told our colleague Times of India (TOI), ‘Till now everything is going according to plan. Including the Lunar-Orbit Insertion (LOI) scheduled for August 5, Chandrayaan-3 will make five orbits around the Moon. So that, by reducing the orbit of the moon, it can be brought within a radius of 100 kilometers from the surface of the moon.
Chandrayaan-3, which is currently in translunar orbit, will start feeling the lunar gravity when it reaches a distance of 40,000 kilometers from the Moon. It will then be placed in lunar orbit through Lunar-Orbit Insertion (LOI). It will take 20 to 25 minutes to do this entire process.
When Chandrayaan-3 was being sent out of the Earth, its speed was accelerated so that it could easily escape from the Earth’s orbit, crossing its gravitational force. Now the exact opposite will happen. After reaching Chandrayaan in the Moon’s orbit, ISRO scientists will now slow down its speed little by little. This is because by the time it approaches the Moon, in its first orbit, the Earth’s gravitational force will be zero. The moon will also be near zero.
Right now Chandrayaan-3 is going towards the moon at a speed of 38,520 kilometers per hour. At the time of the launch of the mission, the ISRO chief had said that Chandrayaan-3 would go through the same path to reach the Moon, which Chandrayaan-2 had taken. There will be some changes only in the last phase of the mission. These changes also include landing.
It is estimated that Chandrayaan-3 will achieve an orbit of 18 thousand km to 20 thousand km at the farthest point from the Moon. And the nearest point will be about 120 kilometers or more. From there, every revolution made in the orbit of the Moon will reduce the distance from 4 thousand kilometers to 5 thousand kilometers. And, then it will reduce the distance by 1000 kms before entering Chandrayaan-3’s 100 kms circular orbit.
Once all five orbit around the Moon are completed between August 5 and August 17, the Vikram lander and Pragyan rover will separate from the propulsion module on August 17. After this, on August 23, Chandrayaan-3 will make a soft landing on the surface of the Moon’s south pole.
These are the important dates related to Chandrayaan-3-
August 1- Chandrayaan-3 reached the Trans Lunar Trajectory i.e. on the way towards the moon.
August 5 – Lunar Orbit Insertion will take place, i.e. entry of Chandrayaan-3 into the Moon’s orbit.
August 17 – Vikram Lander will separate from the propulsion module.
August 23 – Chandrayaan-3 will land on the surface of the Moon.
Preparations have been completed to send Chandrayaan-3 on its long journey on July 14 itself. The goal is to land the lander on the moon on August 23, so that the rover on the lunar surface can take full advantage of the light of a lunar day of 14 days. Its path to reach the Moon will be exactly the same as that of Chandrayaan-2. After launch, gradually increasing its radius to reach a sharp elliptical orbit around the Earth, gaining escape velocity in the process and covering the main part of its journey in the Earth’s orbit around the Sun, then entering a large circular orbit around the Moon Take off and finally start the process of landing the lander on the moon after reaching a small stable orbit.
Before moving ahead, it is important to keep one thing in mind that there is a lot of confusion in all the information available about lunar missions in the country and abroad. A stark reality has been deliberately hidden in this pile of information. It is lovely to hear that so far only America, Russia and China have achieved soft landing on the Moon. By making a soft landing of Chandrayaan-3, India can become the fourth country in this list. From this it seems that for at least three countries, landing on the moon would have become a common thing. The truth is that after inventing the technology of soft landing on the moon, mankind has forgotten it. This led to the conspiracy theory that Apollo never landed on the Moon.
If you go by the facts, America had safely landed its last vehicle on the moon in 1972, while Russia or rather the Soviet Union did this work for the last time in 1976. Since then till now, in the past half a century, both these countries have been looking at the moon through the eyes of a telescope or a research satellite. For deep observations, a common practice has been to drop an object at full velocity onto the lunar surface, as happened with Chandrayaan-1. The spectrography of the dust and steam that blows up from it gives results about the texture of the moon.
China is currently the sole master of soft landing on this lone satellite of the Earth, which did it three times between 2013 and 2020 in a foolproof manner. Apart from America, Russia, China and India, Israel has also tried to land on the moon, but in 2019 the result was not good for its vehicle Beresheet. Two kilometers before reaching the surface, it lost communication with the command center and the lander was not known.
Chandrayaan-3 will be different from the previous mission, let’s understand that difference (Difference between Chandrayaan-2 and Chandrayaan-3)
- One of the tasks of Chandrayaan-2 was also to establish the orbiter in the Moon’s orbit, which is not to be done this time. The orbiter installed there in 2019 is still in good condition. He will also have an important role in the success of Chandrayaan-3.
- ISRO says that its preparation for Chandrayaan-3 has been done in the opposite way to Chandrayaan-2. This is being called a failure-based model, that is, in which situations all the preparations have been made keeping such apprehensions in front of what things can go wrong.
- The area for landing has been selected bigger than before. The orbiter carried by Chandrayaan-2 has provided ISRO over the past four years with very detailed images of the intended landing area. At present, on the basis of these photographs, ISRO has prepared a detailed blueprint of the length, width and height of objects up to 28 cm at the landing site.
- YouTube –https://youtube.com/@newsvoltin