Chandrayaan-2 : Updates

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Can anyone tell me ,are these burns necessary to achieve escape velocity of the earth?and why doesnt our rockets achieve but American ones can?whats the difference and can we work on improvement?
 
Can anyone tell me ,are these burns necessary to achieve escape velocity of the earth?
Well indirectly yes, that is the objective of these burns. Hohmann transfer orbit to moon is what we are trying to achieve. A hohmann transfer orbit is a minimum energy transfer orbit allowing the spacecraft to go really long distances with minimal fuel expenditure. The Mars orbiter mission also used a similar transfer orbit. Here is a good video on hohmann transfer orbits("delta-V" that he keeps talking about is change in velocity caused by fuel burn, it can be negative or positive)


and why doesnt our rockets achieve but American ones can?
A direct transfer orbit would require a much more powerful upper stage then the one currently in use. Here our problem isn't the engine, we have one of the most powerful cryo-engines ever produced. The problem is fuel carried, more fuel will allow us to run the engine longer but it will also make the rocket heavier.
We are already in the process of increasing fuel load of the upper stage . GSLV M3 in its normal configuration carries 25 tons of propellent in the upper stage, for the CY-2 mission it was carrying 28 tons. This allowed us to attain a higher altitude than originally planned, overshooting the target height by 6000 kms.
For upcoming heavy launchers ISRO plans to make a 32 ton propellent stage and also a 60 ton stage.
whats the difference and can we work on improvement?
The primary problem is not having a semi-cryo engine for the core stage. ISRO is already working on it by developing an engine called the SCE-200.
 
China news from Russian propaganda site. Not sure what to make of this.:unsure:

China offers to jointly explore Moon with India, hails successful Chandrayaan-2 mission launch

Published time: 23 Jul, 2019 13:19
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FILE PHOTO © Indian Space Research Organisation/Handout via REUTERS

Just a day after India successfully launched its Chandrayaan-2 Moon mission, Beijing says it is ready to team up with New Delhi to explore Earth’s natural satellite, possibly offering a way to mend ties with its rival neighbor.

China welcomes the start of India’s flagship Chandrayaan-2 mission, Foreign Ministry spokesperson Hua Chungying told a press briefing in Beijing. “We are ready to join forces with India and other countries to carry out lunar explorations,” Chungying said, adding that it is “a shared mission of humankind” to find out more about the Moon and beyond.

That aside, there were other indications that the Indian launch was met with praise in China. Wu Weiren, chief of China’s lunar exploration program, wished India’s Moon landing success “despite previous delays,” according to the Global Times.

International efforts to explore the Moon will also motivate China to move forward, but its own space program doesn’t mean that Beijing is going to “compete with anyone over the matter,” Wu said.


On Monday, India’s second lunar mission successfully blasted off from the Sriharikota space station, garnering applause from scientists in the control room and other onlookers. The spacecraft has already entered Earth’s orbit, where it will stay for three weeks before it starts maneuvering towards the Moon.

If all goes as planned, India will become the fourth country to make a safe landing on the Moon’s surface. So far, only the USSR, the US and China have been able to do so. Chandrayaan-2 is set to gather data and images from the Moon’s little-explored South Pole.

China’s own mission, the Chang’e-4, successfully touched down in the South Pole-Aitken basin in January. It explores the region’s geology, conducts biological experiments, and captures images which are relayed back to Earth.

If China and India team up to explore the Moon it would provide an opening for the two powers to repair ties damaged during a long-running geopolitical rivalry. Both countries have unresolved border disputes that saw them engage in occasional skirmishes along their 3,500km-long (2,175 miles) frontier.


China offers to jointly explore Moon with India, hails successful Chandrayaan-2 mission launch
 
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So many theories are floating around the reservation system in ISRO . Do we really have a reservation system based on caste for ISRO scientist ?
 
So many theories are floating around the reservation system in ISRO . Do we really have a reservation system based on caste for ISRO scientist ?

There's no reservation for scientists and core engineers. There's only reservation for physically handicapped in this category.

Everywhere else there is reservation within ISRO.
 
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YAAAAS !!! Been waiting for this. It will be a live show.:love::love:

Nat Geo Plans 'Live Show' from ISRO for Soft Landing of Chandrayaan-2 on Lunar Surface

India on Monday successfully launched the ambitious mission on-board its powerful rocket GSLV-MkIII-M1 from a spaceport in Sriharikota to explore the uncharted south pole of the moon. The rover's soft landing is planned for September 7.

PTI
Updated : July 24, 2019, 9:34 PM IST
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India’s second Moon mission Chandrayaan-2 lifts off onboard GSLV Mk III-M1 launch vehicle from Satish Dhawan Space Center at Sriharikota in Andhra Pradesh. (Image: PTI)

New Delhi: With the Chandrayaan-2 rover expected to soft land on the lunar surface in September, a live show from ISRO has been planned on the D-Day by the National Geographic, the network said on Wednesday.

India on Monday successfully launched the ambitious mission on-board its powerful rocket GSLV-MkIII-M1 from a spaceport in Sriharikota to explore the uncharted south pole of the moon. The rover's soft landing is planned for September 7.

"The live show, scheduled in September, will slowly drum up the excitement by giving the viewers deeper insights into the historic moment," the National Geographic said in a statement.

"The show will be an interesting interplay of live coverage and pre-shot stories narrating the iconic nature of the mission and interview of experts from the field to talk about the mission," it said.

The programme will originate from the Indian Space Research Organisation's (ISRO) Command Centre, from where the National Geographic will share live updates as Chandrayaan-2 attempts to soft land on the surface of the moon.

The towering geosynchronous satellite launch vehicle, in its first operational flight, had lifted-off on July 22 from the Satish Dhawan Space Centre in Sriharikota into cloudy skies at 2.43 pm and successfully placed the 3,850-kg Chandrayaan-2 into the earth orbit 16 minutes and 14 seconds later.

Nat Geo Plans 'Live Show' from ISRO for Soft Landing of Chandrayaan-2 on Lunar Surface