Chandrayaan-2 : Updates

The only factor ISRO engineers and scientist miscalculated in understanding the effect of firing maneuvering thursters on the 1.4 ton Lander was moon's Gravity as well as the shifting Center of Gravity of the Lander itself with depleting fuel and the speed of angular descent.

Stuff is 6 times lighter on the moon. So a little over 200Kg.
 
@vstol Jockey @nair @randomradio @S.A.T.A @Gautam

more news:

LANDER IN ONE PIECE
IT IS TILTED- I GUESS IT MUST HAVE SLIPPED OUT ON THE SIDES
IT HAD HARD LANDING BUT NOT CRASH LANDING


"Lander Vikram In Single Piece, In Tilted Position": ISRO Official

Positive news. Would be interesting to know the lander is tilted at what angle. If its is tilted and not prone, then potentially ramp can be deployed if we re-establish communication and deploy Pragyaan. Fingers crossed really. ...
 
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Any official pics of the lander from ISRO..?
There may not be any, Lander is 2.54m x 2m and Camera on Orbiter is .32m resolution (same as google earth). So the image of lander will be around 8 pixel by 6 pixel, too small to analyze anything.

They may have used different different images and shadows and model it in CAD to actually identify the orientation of lander. You can't get anything conclusive with naked eye so not much use to put those images in public.

And since it landed on far side of the moon we don't have direct line of sight to get something via powerful telescopes.

If we have fuel remaining onboard in the lander, we can probably fire the relevent engines and try and make it upright if it is tilted. But if it has landed upside down, there is nothing much that we can do.
But how? Unless there is communication nothing can be done. Strange that this was not taken into account and lander was not pre programmed to contain such situations! Or maybe it was and it is broken and can't function anymore.

Also design was pretty conventional and risk prone with more and more designs that eliminate risk of orientation and terrain are available I don't know why we went for very basic and traditional one.
 
And since it landed on far side of the moon we don't have direct line of sight to get something via powerful telescopes.

Ha! You don't know anything. We should use Fawad Chaudhry's idea of using the Hubble telescope to see the moon. Even the rivets will become visible in HD. :p
 
Ha! You don't know anything. We should use Fawad Chaudhry's idea of using the Hubble telescope to see the moon. Even the rivets will become visible in HD. :p
But would SUPARCO allow us to use their Hubble telescope during such tensions??i doubt it
 
They may have used different different images and shadows and model it in CAD to actually identify the orientation of lander. You can't get anything conclusive with naked eye so not much use to put those images in public.

Infrared image plus whatever you said
and tried to reflect the laser off the laser reflector installed on it. There was no reflection so it's tilted.

It has crash landed. Things don't get deformed like that on lunar surface due to elastic collision
 
It recovered very much in last seconds, that's why not much of hard landing, though telemetry didn't show that due to cut-off of communication.
 
There may not be any, Lander is 2.54m x 2m and Camera on Orbiter is .32m resolution (same as google earth). So the image of lander will be around 8 pixel by 6 pixel, too small to analyze anything.

They may have used different different images and shadows and model it in CAD to actually identify the orientation of lander. You can't get anything conclusive with naked eye so not much use to put those images in public.

And since it landed on far side of the moon we don't have direct line of sight to get something via powerful telescopes.


But how? Unless there is communication nothing can be done. Strange that this was not taken into account and lander was not pre programmed to contain such situations! Or maybe it was and it is broken and can't function anymore.

Also design was pretty conventional and risk prone with more and more designs that eliminate risk of orientation and terrain are available I don't know why we went for very basic and traditional one.

actually there is sight hope...they want it to have soft landing but design it to survive some hard ladings. problem is that we have only 14 days before the temperature plunges.
 
He is busy getting his vision and thought process checked. He sees every Pizza boy , Doctor , Patient , Plumber , Taxi driver as victim of evil yindoos

actually you mean he's watching a lot of p*rn movies where Pizza buy, Delivery boy, taxi driver etc. are boinking his partners behind his back.
 
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Infrared image plus whatever you said
and tried to reflect the laser off the laser reflector installed on it. There was no reflection so it's tilted.

It has crash landed. Things don't get deformed like that on lunar surface due to elastic collision
ISRO said hard landing and not crash landing , much difference. Why would they try to contact if it was a crash???
 
Ha! You don't know anything. We should use Fawad Chaudhry's idea of using the Hubble telescope to see the moon. Even the rivets will become visible in HD. :p
It is on the near side.. But would still be difficult to take any meaningful pic from Earth.. the orbiter might try to get nearer like a 30 km perigee orbit.. but this might compromise its other missions..
 
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No they calculated everything right. Even a class 11th student will have this parameter in mind.

You think so? All control algorithms are based on PID foundation and their advanced derivatives. Why do you think there were several rockets losing their balance during lift off - due to less or more power, and incorrect vector control. We should have sent those scientists to redo class 11

 
You think so? All control algorithms are based on PID foundation and their advanced derivatives. Why do you think there were several rockets losing their balance during lift off - due to less or more power, and incorrect vector control. We should have sent those scientists to redo class 11


Wow. You identified the problem and the solution too.