About the objective and successful launching of the Chandrayaan 3 mission…
Friends! We all want to know more and more information about the moon from childhood till now. Some say that there is water on the moon, there is oxygen as well, and there is an atmosphere on the moon like the Earth for humans to live. All the information on all these questions will soon be known through Chandrayaan 3.
America, Russia, and China have succeeded in soft landing on the surface of the moon, but so far no country’s spacecraft has landed in the south pole region of the moon. If India succeeds in this, it will become the first country to achieve this feat. America’s Surveyor-1 made a soft landing on the moon in 1966. China’s Chang-3 made a soft landing on the moon in its very first attempt. At the same time, Luna-9 of the Soviet Union also successfully landed on the moon.
Let us go on telling you small information about chandrayaan-2 before chandrayaan-3.
Chandrayaan-2 Mission-
*Chandrayaan-2 consisted of an orbiter, lander, and rover, all equipped with scientific instruments to study the Moon.
*The moon was observed by the orbiter in a 100-km orbit, while the lander and rover modules were separated to perform a soft landing on the lunar surface.
*ISRO named the lander module Vikram after Vikram Sarabhai, the pioneer of India’s space program, and the rover module named Pragyan which means – wisdom.
*It was launched by the country’s most potent Geosynchronous Launch Vehicle, GSLV Mk 3 (GSLV-MK 3).
*However, the lander Vikram crash-landed instead of a controlled landing, due to which the rover Pragyan could not be successfully placed on the lunar surface.
(Chandrayaan-3)
What will happen in Chandrayaan 3 if problems arise like in Chandrayaan 2?
After a thorough analysis of the technical errors that occurred in Chandrayaan 2, such arrangements have been made in the lander module so that if such a problem occurs again, its solution can be found.
ISRO Chairman Somnath said that when Chandrayaan-3 will land, it will be important to achieve a vertical position of 90 degrees from the horizontal position and maintain the same position till the soft landing.
Somnath said all necessary arrangements have been made for a safe soft landing of the Chandrayaan-3 lander even in case of engine failure or some sensor failure.
Why can’t the lander module control?
The lander of Chandrayaan-3 is orbiting the Moon in a long circular orbit. After passing a hundred kilometers above the Moon’s surface, it ignites its booster to bring it into the Moon’s gravitational pull. After this, it starts falling rapidly towards the surface of the Moon.
When it starts falling, its velocity is very high. It takes about 1.3 seconds to send a radio signal from Earth to the Moon. It takes 1.3 seconds for the same signal to reach the ground again.
Thus, the Chandrayaan lander sends a signal to Earth and the second signal takes 1.3 seconds to reach it in response. This means that it takes about two and a half seconds to complete.
That means it takes two and a half seconds to control the lander falling on the moon at a speed of several hundred kilometers per hour. It is because of this extra time that the lander is made to make its own decisions.
In such endeavors, everything should be technically correct otherwise even a slight difference can lead to difficulties.
Chandrayaan-3 first orbits at an altitude of 100 kilometers by firing its booster so that it can fall toward the lunar surface. From there it will rapidly fall on the surface of the Moon.
Thus, the lander module should be at an angle of 90 degrees to the lunar surface while landing. The four legs of Chandrayaan-3 cannot touch the lunar surface vertically, no matter how much they tilt to the side.
Then there will be a danger of Chandrayaan falling upside down. If this happens, the rover will not even be able to get out of it.
After a soft landing on the lunar surface, the lander module sends a signal to Earth. After a while the ramp in it will open. Through this, Rover Pragyan will land on the surface of the Moon and take pictures from there and send it to the Indian Deep Space Network near Bengaluru.
Master Scientist of Scientific Press Organization Dr. T.V. Venkateswaran told the BBC that the 15-minute process of landing the lander on the lunar surface from an altitude of 100 kilometers would be completed in eight steps.
The process of soft landing will start when it does not descend below the altitude of 100 km to 30 km. Till then the legs of the lander are in a horizontal position on the lunar surface. Then rockets will be fired into the lander to further reduce the speed.
When the lander is at an altitude of 30 km, its speed is very high. Controlling that speed, it reaches a height of 7.4 km above the surface of the Moon. It takes ten minutes to reach here from an altitude of 100 km. This can be called the first step.
The objectives of the Chandrayaan-3 mission are-
1. Safe and secure on the lunar surface and demonstrating soft landing.
2. Demonstrate the rover’s trip to the Moon
3. To conduct a scientific investigation as it is.
Chandrayaan-3 will land on August 23 at 6 pm
The lander module of the Chandrayaan-3 mission will make a soft landing on the lunar surface on August 23, 2023, at 6.04 pm. ISRO has given this information. Let us tell you that earlier it was told that the lander will land on the moon at 5.45 pm but now it has been changed.
Friends, about the purpose and successful launching of this Chandrayaan 3 mission… How did you like the article, if you find this article even a little bit helpful, then do give your suggestions in the comment box.