Chandrayaan 2 update : Mission pushed back , India to go alone

[faithfulguy]

One has to reconcile to the fact that lander is the difficult part for which ISRO most likely has no prior experience . So this is the toughest part of mission. Not only ISRO will have to design and build lander it will have to also test it before incorporating in mission . This is going to take time . Nobody else besides Russia will be willing to give us lander . And why should we even expect if we can do it ourself !!!

Its not impossible, it will just take more time. There are time for patience and this is one of the times.

 

[Indo-guy]

Yeh expertise gained in building lander would be helpful in future Mars landing missions . Hence India should take its own time to do it . And India can do it !!!

 

[Black Eagle 90]

NEW DELHI: Chandrayaan 2, the second mission to moon, could be an Indian programme all the way without any Russian support.


This was indicated by minister of state in PMO V Narayansamy in a written reply in the Rajya Sabha today.

Chandrayaan 2 was originally envisaged to be a joint mission between ISRO and the Russian Federal Space Agency, Roscosmos.

While ISRO was to provide for the launch of GSLV, the orbiter and the rover as per the agreement, the Russian agency was to provide the lander and the mission was scheduled for the current year.

But, following the failure of the Russian-led interplanetary mission, the Russian agency reviewed their inter-planetary missions.

It consequently suggested ISRO two windows of opportunities for launching of its Chandrayaan 2 rover - either 2015 or 2017 aboard Soyuz, the Russian spacecraft with a rider that the 2015 opportunity could involve mass limitation for the rover and entitle a higher risk.

In the wake of these inputs, the ISRO conducted a high level review of the Chandrayaan 2 programme under the chairmanship of UR Rao.

The study recommended that the India could itself realize a lander module in a few years and that it could go in for the mission on its own.

Narayansamy said the "details of changes in the configuration and the mission profile are under finalization.

He also said the payloads on the lander will be finalized in due course taking into account the weight, volume and power constraints of the lander.

I am also expecting similar response to Russian-Indo MTA as the IAF loved the C-130Js as well as A-400M and C-17s too; which might put the IAF in a situation where they will go to shop for:
20 C-130J-30s
20 A-400Ms
10+20 C-17s

 

[cirr]

It means that India will dish the Russian lander and opt for something more exotic。

 

[gslv mk3]

I know that a lot of Indians believe that this should be ready by 2016 to 2017. they would be correct if there is no soft landing in the moon. But because there is a soft landing, its likely push back to 2019-2020. This would not happen if India failed in their GLSV rocket launch. That rocket is still the key to any future Indian space mission.

It is ISRO,who want to do that mission by 2017,the Russians were willing to co operate,And the mission will have to wait till they are able to provide one.
And it is GSLV not GLSV..........is that clear??

 

[Indo-guy]

India will built its own lander. Committee led by Prof UR Rao came to conclusion that India has capability to build lander on own. Unlikely if India will go far exotic lander. Unlikely if anyone including US will be ready to share the tech .

 

[faithfulguy]

It is ISRO,who want to do that mission by 2017,the Russians were willing to co operate,And the mission will have to wait till they are able to provide one.
And it is GSLV not GLSV..........is that clear??

Are you saying that ISRO cannot accomplish any mission unless Russia is willing to provide a lander? That is a defeatist attitude as India is more than capable of building one if it manage its resources correctly. What is the India's equivalent of JPL?

 

[gslv mk3]

Are you saying that ISRO cannot accomplish any mission unless Russia is willing to provide a lander? That is a defeatist attitude as India is more than capable of building one if it manage its resources correctly. What is the India's equivalent of JPL?

Yes they can make it,but it'll take a lot of time for that,currently they are working on the orbiter and rover,Russia really cheated us

 

[Indo-guy]

Yes they can make it,but it'll take a lot of time for that,currently they are working on the orbiter and rover,Russia really cheated us

I don't think Russia cheated us ...Just as our GSLV is not ready yet...their lander is not ready ...
Russia was supposed to test some of the tech during Joint Sino-Russian mission which failed ... How can they give us untested tech ...They gave us two options even offered to fly our orbiter and rover aboard their launch vehicle ...

India studied the offer patiently and refused in self interest....

Both India and Russia acted pragmatically ...shows stage of maturity our mutual relations have reached ...

 

[Indo-guy]

Preliminary configuration for Lander has been completed in December 2012 as per the PRL scientist. Infact Lander is being fabricated by Space Applications Centre. ISRO sources are confident that lander would be ready to embark Chandrayaan 2 by 2015. Now last missing chain is GSLV !.

3 days to go for GSLV launch ....

 

[gslv mk3]

Preliminary configuration for Lander has been completed in December 2012 as per the PRL scientist. Infact Lander is being fabricated by Space Applications Centre.
3 days to go for GSLV launch ....

Where is the link mate??

 

[Indo-guy]

It's old link dates back to January 2013 ....

Seems ISRO started working on Lander long time back ....

Chandrayaan-2 - Indian or Russian Lander ?

 

[Tshering22]

This is so DRDOesque...hope not!!!

I won't say that because ISRO is on a league of its own. Despite its sarkari tag, it is the best performing strategic organization and has successfully put India among a very special group of advanced nation in space exploration.

DRDO... well, let's not ruin the thread.

 

[Indo-guy]

IChandrayaan 2 update ...

with successful launch of GSLV Mk II ....Chandrayaan 2 may be back on track ...

Lander and Rover Moon Exploration mission has 2 launch windows either 2015 or 2017 ...

There is still no clarity ....if Chandrayaan 2 will be totally indigenous mission or it will be Indo-French or indo-US mission ...

Business Standard that ISRO and NASA are working together on the Chandrayaan project to explore the Moon, as also on missions to study Mars and Sun.
“We can have a larger mission; we are able to do that. The next one has to be a more complex mission. A while ago, we, along with the French, carried out a joint project of building a satellite---the Megha-Tropiques. We had also worked with the French to develop two landers. We have carried out a joint study with NASA’s JPL,” Radhakrishnan said.
The ISRO Chairman's reference to two lander could suggest that ISRO may go for a standalone lander first to validate lander technology and then a lander / rover combination as originally envisaged.

Isro lines up 18 missions over the next 15 months | Business Standard





Project Director
The project is being helmed by Dr Mayilsamy Annadurai.
Mission Profile
According to a presentation made by Dr. Goswami and M. Annadurai, project director for Chandrayaan-2, at 2011 Lunar and Planetary Science Conference:
A GSLV Mk-2 launcher will will place the Chandrayaan-2's orbiter, lander and rover, in a transfer orbit around the Earth. From there, the orbiter's onboard rocket engine will propel both the spacecraft and the lander-rover combo into a trajectory that will take them to the Moon.
Once on the lunar transfer trajectory, the orbiter and lander-rover will separate. The two would then journey independently to the Moon,
Landing Sequence
During the landing, the lander's main engine will bring the spacecraft to hover at approximately 2 kms above the lunar surface and then shut down.
The lander will then free fall under the moon's weak gravity, with small thrusters periodically firing to control the rate of descent.
The lander will use a three beam Doppler radar to avoid large obstacles during its descent to the moon's surface.
The accuracy of the autonomous landing system allows the landing area to be predicted as an ellipse that is 30 km long and 15 km wide.
After the lander touches down on the moon, it will release the rover on the lunar surface.
Landing site:

2 landing sites reportedly been identified based on data from NASA's Lunar Reconnaissance Orbiter (LRO) and Japanese Selena orbiter, which entered lunar orbit in 2007.
The Russian developed Lunar Exploration Neutron Detector, LEND, installed on LRO was used to identify sunlit areas, potentially with sub surface ice. Imagery from Selena and data from LOLA laser altimeter on NASA’s LRO orbiter was used to profile the terrain in these areas.
To begin with 14 sites in sunlight areas close to the South Pole that possibly have subsurface ice were identified..
Nine of these sites were rejected at the outset by the lander team because the terrain was too rough for the landing system of the spacecraft.

The mission strategy was revised to inject the satellite in a lower initial orbit (170 X 16980 km) with a higher lift-off mass of 3200 kg and the Propulsion System Configuration changed to increase fuel carrying capability of the satellite.


Selected Sites
Based on accuracy of the landing system, two sites have been short listed
Main site: 87.2 deg S, 68 deg E, Shoemaker, Faustini
Backup site: 88.5 deg S, 297 deg E, Gerlach
The sites finalized could change if the accuracy of the landing system is improved or based on other data.

 

[IndoUS]

I don't know why people are b*tch*ng about Russia. They kindly declined on the offer because the technology they were planning on using for the Chandrayaan 2 was not able to be tested on their joint mission with China. If they give us an untested technology and it fails, it will hurt both of the agency's faith on each other.

As for ISRO going alone on the mission. I have full faith in them, they have proven their credibility as an efficient and experienced agency (unlike our other agencies).