you are assuming that the speculated sections are confirmed. That has to be left to them. Besides, a technical win is a consolation prize, we need the big prizes and do it well.
you are assuming that the speculated sections are confirmed. That has to be left to them. Besides, a technical win is a consolation prize, we need the big prizes and do it well.
Refer to my all posts which say only to wait for confirmation from official PRO. Only thing I have said confirmed is ISRO Chief statement on location of lander and trying to communicate with it. Thank you.
GUYS....A SURE FIRE WAY TO COMMUNICATE WITH CHANDRAYAAN 2 HAS BEEN IDENTIFIED
(in unrelated news the orbiter imaged the rover quickly leaving the lander and fleeing for dear life to other parts of the moon)
(in unrelated news the orbiter imaged the rover quickly leaving the lander and fleeing for dear life to other parts of the moon)
ok guys, confirmation that the landing was not as soft as intended. if something is working, maybe they can get it on. We will just have to wait for now.
Vikram located on lunar surface, did not soft-land: ISRO
Vikram located on lunar surface, did not soft-land: ISRO
After watching isro's animation for vikram lander many times, I wondered if it has shock absorbers for contingency. Then I said to myself that it's redundant and will only increase load. Animation shows lander have sensors in landing legs and thus restricting g forces experienced by it.
The Rough braking should have ended Earlier and the Fine Braking should have begun Earlier
That is the Velocity of Descent should have been Further Reduced and controlled
Much earlier
That would have given us more time to
Re establish Communication
Once it Thudded on the Surface , Communication could not be Re established
That is the Velocity of Descent should have been Further Reduced and controlled
Much earlier
That would have given us more time to
Re establish Communication
Once it Thudded on the Surface , Communication could not be Re established
The mass of vikram lander (including the rover inside) is 1471 kg. This article says it has shock absorbers.
Vikram has four legs and possibly may not find a totally flat location to land. But, it has an adequate mechanism to project any vibrations while landing, like the presence of shock absorbers.
Not sure if the 'shock absorbers' are the legs of lander or something more.
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.
They probably missed some factors in applying the PID control theory which resulted in too many extreme maneuvers in short intervals making the Lander lose its orientation and turn sideways and finally upside down. Moment it went upside down, the communication snapped and the main speed breaker thursters instead of slowing the Lander, acted reversely to accelerate the spacecraft towards the moon's surface.
In it's next attempt, ISRO should bring down the speed to Zero to hover at 2 km above the ground level for few seconds without any sideways maneuvers irrespective of how much ever it is off the planned trajectory, and then allow the Lander to recalculate new descend parameters towards the destination as well as have sensors to look for obstructions if any, in which case plan a round-about descend. Also, they should add redundant TR modules and additional cameras with independent battery packs which can communicate with the Orbiter, besides the main TR Communication pack.
Since the Orbiter has life of over 7 years, they can now only send the Lander for which they probably can do it on an extended version of PSLV or for sure on GSLV Mk II instead of Mk III
They probably missed some factors in applying the PID control theory which resulted in too many extreme maneuvers in short intervals making the Lander lose its orientation and turn sideways and finally upside down. Moment it went upside down, the communication snapped and the main speed breaker thursters instead of slowing the Lander, acted reversely to accelerate the spacecraft towards the moon's surface.
In it's next attempt, ISRO should bring down the speed to Zero to hover at 2 km above the ground level for few seconds without any sideways maneuvers irrespective of how much ever it is off the planned trajectory, and then allow the Lander to recalculate new descend parameters towards the destination as well as have sensors to look for obstructions if any, in which case plan a round-about descend. Also, they should add redundant TR modules and additional cameras with independent battery packs which can communicate with the Orbiter, besides the main TR Communication pack.
Since the Orbiter has life of over 7 years, they can now only send the Lander for which they probably can do it on an extended version of PSLV or for sure on GSLV Mk II instead of Mk III
Kya baat hai? Poore Mood Mai Ho Bajuwalonki Lene Mai..
I honestly say what the f*** is Pakistan what's their achievement in space, except for watching moon and celebrating Eid that too without being sure about the moon phase. Discussing Pakistan with respect to space missions is like insult to commonsense.
@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
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
On moon somewhat less than 1471kg
No they calculated everything right. Even a class 11th student will have this parameter in mind.
Everything was perfect, the only thing which was not perfect is the mapping. As I said the contact was lost few thousand meters above the actual landing zone, this means it landed hard because some surface suddenly appeared close ' terrain terrain' due to automated change in trajectory to find suitable place to land.
There is no reason other than false mapping to suddenly change the trajectory land 500m before and few thousand meters above the landing zone .
That is good news.......Let's hope these workaholics find a way to recover the lander and rover.....Their efforts are enormous......
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.