Technical glitch eliminated - If everything goes right, then Chandrayaan-2 will be launched on this date

If the launch is not performed till the end of July even after the efforts of the scientists, then in the next few weeks as well, the launch of Chandrayaan-2 is not possible. Because, this launch window will end. The next launch window will probably come in September. The launch window is a suitable time when the distance to the moon is minimum.

Highlights:

1. Chandrayaan-2 will be launched on July 22 at 2.52pm
2. Mission was aborted on July 15 just before the launch 
3. The Helium leakage in the cryogenic stage of Chandrayaan-2  has been removed

Launch of Chandrayaan-2, the second moon mission of the Indian Space Research Organization (ISRO), was stopped 56.24 minutes before launch on July 15. Chandrayaan-2 was to be launched at 2.51 AM in the country's most powerful Bahubali rocket GSLV-MK-III. But countdown was stopped 56.24 minutes ago. ISRO spokesman BR Guruprasad said on behalf of ISRO that the mission was aborted due to some problem in the GSLV-MKIII rocket. The next date of launch will be announced soon. However, soon after this, the ISRO scientists sorted it out and then eliminated it as well.

Chandrayaan 2 is ready to take a billion dreams to the Moon — now stronger than ever before! Join us for the launch on Monday — 22 July, 2019 — at 2:43 PM IST.
#Chandrayaan2 #GSLVMkIII #ISRO pic.twitter.com/4ybFcHNkq6

— ISRO (@isro) July 18, 2019

ISRO's trusted sources have said that there was a pressure leakage in the command gas bottle of cryogenic stage, which contained helium in it. Its job is to keep the liquid oxygen and liquid hydrogen cool which are filled in the cryogenic engine. The mission had to be stopped due to the helium leakage. Helium's pressure level was not becoming stable in the bottle. It dropped from 330 points to 300, then to 280 and eventually reached 160. So the launch had to be stopped.

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What ISRO scientists have done so far since July 15? 

Scientists first removed the propellant (fuel) from all stages of the Bahubali GSLV-MK III ROCKET. They had planned that the entire GSLV-MK III would be separated, but it wasn't needed to be done. Only the defective part was removed and fixed. They have changed the helium gas bottles. At the same time, the valve causing the pressure leakage has also been fixed.

What ISRO scientists will do for the next few days from today? 

Today, after testing all day on July 18, ISRO's Analysis Committee will examine the results of all the tests in the evening. Also, those parts of the GSLV-MK III rocket will be cleaned, from which the fuel was removed. After this, all parts of the rocket will be assembled in the assembling unit. Then it will be taken to Launchpad-2. After this, a few hours before the launch, the fuel will be filled in different parts of the rocket.

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There is a possibility that after the launch, ISRO scientists reduce the number of revolutions of Chandrayaan-2 around the Earth from five to four. However it will cost a little more fuel. Reduction in the orbit of the Earth will save time for further travel. As the distance of the moon has become a little more, so it is also possible that after reaching the moon, scientists can also reduce the number of rotation around the moon as well.

Chandrayaan-2  may be launched on July 22

Trusted sources of ISRO have said that ISRO scientists have fixed the problem of helium leakage. There are some tests which will be completed by July 18. Chandrayaan-2 can be launched on July 22 at 2.52 pm. Thus, the journey of India's Moon Mission Chandrayaan-2 will be delayed by 4 days. It means, first Chandrayaan-2 was to reach the moon on 6th September but if now it is launched on 22nd, then it will reach the Moon's South Pole on September 11 or 12. However, there is a complete possibility of launch by the end of July. If this month the launch is not performed, then it would be launched in September.

Launching in September-October if not launched on July 22

If the scientists are somehow unable to launch  the mission on July 22, it is not possible in the next few weeks as well. Because, this launch window will end. The next launch window will come in September or October. The launch window is a suitable time when the distance of the moon from Earth is minimum, and the probability of hitting other artificial satellites and space debris around the earth is also very less.

Why moon mission will be launched in September-October?

The launch window will be decided by the Space Physics Lab of ISRO situated in Trivandrum. The next launch window will be available in September or October. Because the average distance of the Moon from the Earth is 3.61 lakh km during this time period. If the launch of Chandrayaan-2 on July 15 was successful, it would have to travel about 3.84 lakh km. That is, it has to cover 23 thousand km more distance.

Images and videos credit : ISRO/PIB