India's Moon Exploration Program

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I think I got it wrong. 20th August will be when it will entres the moon's orbit.
It's okay now.
Nope we are landing on the same date despite being late by 1 week due to over the expectation performance by the engine
First
Engine didn't overperform by itself. We made it do so and were successful in experiment.

We needed higher altitude in this case but what do you think parking a communication satellite in 45,000 kms will be called a success?

ISRO has been developing upper stages for a while and we will very soon be able to launch satellites directly into GEO & MEO like USA, Russia & China instead of using manuoevers. India's own space tug.
First launch September-November this year.

Second
Chandrayaan-2 didn't save time due to higher orbit. We had a "buffer zone" around moon to orbit it without releasing lander. We just reduced this time. We will be reaching Moon on August 20 and could do it even later a couple of days.
 

Absolut_Vodka

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What makes you think china is a goodie. You dont hurt yourself to abuse a fool.
I don't want to derail this thread but what I meant was only in context of trolling USA.

Just a guesture, a subtle insult. That's it.
 

G10

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To insult a fool why india should compromise. Let him live in his foolishness. Just do your thing.
Daddy says, if dog is barking at you on the street just ignore and move on.
 

ssg_slayer

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Chandrayaan-3 is in the pipeline?


Is ISRO eyeing third lunar mission?


After the launch of Chandrayaan-2, the Indian Space Research Organisation (ISRO) is getting ready for another lunar mission — Chandrayaan-3. Chandrayaan-3 will not only land on the Moon but will bring soil and rock samples back from the lunar polar region. Japan could be a part of the mission. A decision on Chandrayaan-3 will be held after reviewing the results of the experiments carried out by the lander and rover of Chandrayaan-2.

According to preliminary discussions, the mission will be carried out by the ISRO in five years in association with Japan Aerospace Exploration Agency (JAXA). The next shot at Moon is planned to bring soil and rocks from the South Pole of the Moon and study them. The present technology is inadequate to bring samples from the Moon.

India’s lunar mission comes at a time when the US, Russia and China are getting ready for continuing their research studies and missions to the Moon. India launched its second moon mission Chandrayaan-2 on Monday. The mission seeks to explore the uncharted lunar south pole.

idrw.org .Read more at India No 1 Defence News Website https://idrw.org/is-isro-eyeing-third-lunar-mission/ .

Not yet sanctioned but might happen soon, There is a Venus mission as well.
 

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Jul 26, 2019
Chandrayaan2 update: Second earth bound maneuver
Second earth bound orbit raising maneuver for Chandryaan-2 spacecraft has been performed successfully today (July 26, 2019) at 0108 hrs (IST) as planned, using the onboard propulsion system for a firing duration of 883 seconds. The orbit achieved is 251 x 54829 km.
All spacecraft parameters are normal.
The third orbit raising maneuver is scheduled on July 29, 2019, between 1430 – 1530 hrs (IST).
 

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Chandrayaan-2 may orbit Moon for 2 years

HIGHLIGHTS
  • The orbiter on Chandrayaan-2, which Isro initially said would go around the Moon for just one year, may now have a lifespan of at least two years.
  • The orbiter was packed with 1,697kg of propellant at launch, and it has expended about 130kg for the two manoeuvres on July 24 and 26.
  • As on Saturday, the orbiter had more than 1,500kg of propellant.
BENGALURU: The orbiter on Chandrayaan-2, which Indian Space Research Organisation (Isro) initially said would go around Moon for one year, will be able to have a lifespan of at least two years if everything goes as per Isro’s current estimations.
At least five people associated with the Rs 978-crore mission told TOI that it’s life may be extended by an additional year as per the current status of things, which is a significant bonus from the one-year lifespan that Isro chairman K Sivan had said it would have on June 12.
“Chandrayaan-1 was planned for a longer life than it had but a problem with the power converters led to a curtailed lifespan, which has been corrected for Chandrayaan-2. And, going by the amount of fuel that will remain in the orbiter after all the manoeuvres, we will have Chandrayaan-2 orbiting for at least two years,” a source working with the mission team, said.

The orbiter was packed with 1,697kg of propellant at the time of the launch, and it has already expended about 130kg of it for the two manoeuvres Isro conducted on July 24 and 26. As on Saturday (July 27), the orbiter had more than 1,500kg of propellant remaining.
A scientist said that a better-than-textbook launch has given the agency an advantage of about 40-odd-kg of fuel. Besides, another scientist said: “Even as per the initial plan we had, additional fuel was budgeted keeping in mind some emergencies. But going by present estimates and calculations, we will have more fuel than it is needed to orbit for a year.”
Sivan had earlier said that all the manoeuvres until the separation of Vikram, the lander, will be fuelled by the propellants on the orbiter. This means that there are nine more manoeuvres before the separation, during which many more kilograms of fuel will be used up.
According to Isro’s present estimation, at the end of all Earth-bound and lunar-bound manoeuvres, the orbiter should be left with at least 290.2kg of fuel when it is in the 100kmX100km orbit around Moon (see graphic).
“This will be more than enough for it to go around Moon for two years as there will be no more big manoeuvres required,” the first scientist said. Another scientist said that the only manoeuvres after reaching the desired lunar orbit, if at all, would be minor ones.
“But, given that Moon’s gravity is not uniform unlike Earth, the orbiter needs to be kept in the correct orbit, which will require periodic intervention. If left unattended, the closest point to Moon could become very narrow. These manoeuvres will use up some fuel,” the scientist explained.
All the scientists emphasised that they could only confirm the exact number of additional days the orbiter could have around Moon once the lunarcraft is settled into an orbit there. “Chandrayaan-2 is expected to be inserted into the lunar orbit on August 20, and we can assess how long it would last once it is there and we know exactly how much fuel is left,” one of them said.
 

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Jul 29, 2019
Chandrayaan2 update: Third earth bound maneuver
Third earth bound orbit raising maneuver for Chandryaan-2 spacecraft has been performed successfully today (July 29, 2019) at 1512 hrs (IST) as planned, using the onboard propulsion system for a firing duration of 989 seconds. The orbit achieved is 276 x 71792 km.
All spacecraft parameters are normal.
The fourth orbit raising maneuver is scheduled on August 2, 2019, between 1400 – 1500 hrs (IST).
 

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Japan, India to team up in race to discover water on moon

The government has decided to join forces with India in the race to discover water on the moon, with the two countries planning to try to land an unmanned rover on the moon’s south pole as early as fiscal 2023.
Frozen water is believed to exist inside craters and other areas of the moon’s poles where sunlight does not reach. The government plans to use the rover to excavate in such areas and discover water on the moon for the first time. The Japan Aerospace Exploration Agency (JAXA) and Indian Space Research Organization (ISRO) have already held meetings on the project, and Japan’s Committee on National Space Policy and other bodies are set to begin discussions before making an official announcement.
The government’s Strategic Headquarters for National Space Policy, led by Prime Minister Shinzo Abe, decided last month to make the Japan-India lunar mission a priority item on the schedule of its Basic Plan on Space Policy when it is revised at the end of this year.
Japan will be in charge of launching the rocket and developing a lunar rover, while India will develop a lander for the mission.
Japan’s H3 launch vehicle, which is under development, will send the rover-loaded lander to the moon sometime around fiscal 2023. The lander is expected to touch down on the moon’s south pole, where water likely exists. The rover will then explore an area 500 meters square to try to detect water using onboard analysis equipment.
On July 22, India launched the unmanned spacecraft Chandrayaan-2 in an effort to land in the vicinity of the moon’s south pole. Japan, meanwhile, plans to launch its own lander, SLIM, in fiscal 2021 to make a pinpoint landing on the moon’s surface. The government decided that integrating the results of these projects would give the two countries the lead in the race to discover lunar water.
The moon has a radius of about 1,700 kilometers, or about one-fourth the radius of the Earth. A series of recent uncrewed probes conducted by India and the United States have revealed that water is highly likely to exist on the moon’s north and south poles in the form of ice. However, a water sample has not yet been collected. Besides providing drinking water, the hydrogen and oxygen extracted from lunar water could be used to fuel rockets, transforming the moon into a base for man’s future development of space.
As a result, many countries are joining the race to explore the moon’s poles. The U.S. National Aeronautics and Space Administration (NASA) is trying to send astronauts to the moon’s south pole by 2024 under its Artemis lunar exploration program, which would mark the first manned moon landings since the historic Apollo missions. China is also aiming to land an uncrewed probe on a lunar pole and bring moon rocks back to Earth in 2020 or later.
“We want to get ahead of the world in confirming the presence of water on the moon,” said Takeshi Hoshino, a principal engineer at JAXA. “Finding water on the moon would lead to broadening the range of activity for humankind and make lunar exploration more active than ever.
https://the-japan-news.com/news/article/0005907013
 

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Aug 02, 2019
Chandrayaan2 update: Fourth earth bound maneuver
Fourth earth bound orbit raising maneuver for Chandryaan-2 spacecraft has been performed successfully today (August 2, 2019) at 1527 hrs (IST) as planned, using the onboard propulsion system for a firing duration of 646 seconds. The orbit achieved is 277 x 89472 km.
All spacecraft parameters are normal.
The next orbit raising maneuver is scheduled on August 6, 2019, between 1430 – 1530 hrs (IST).
 

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Chandrayaan-2 may orbit Moon for 2 years

HIGHLIGHTS
  • The orbiter on Chandrayaan-2, which Isro initially said would go around the Moon for just one year, may now have a lifespan of at least two years.
  • The orbiter was packed with 1,697kg of propellant at launch, and it has expended about 130kg for the two manoeuvres on July 24 and 26.
  • As on Saturday, the orbiter had more than 1,500kg of propellant.

Higher apogee received during the launch has saved the fuel. Which will prolonged the life of Moon orbiter.
 

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