ISRO has spent a lot of time looking at what went wrong in Chandrayaan 2
ISRO has spent a lot of time looking at what went wrong in Chandrayaan 2. What really went wrong, according to you? Things that you can explain to a common man.Basically, there were a few things, not only one problem. One was the propulsion system. Dispersion in the propulsion system in certain regions of the flight was more than what we expected, that means in that total landing phase we had four phases: one is that rough breaking phase where the maximum velocity has to come down, then the altitude hold phase, then fine breaking phase, then landing phase. Like that four phases are there.
In the rough breaking phase, this propulsion system worked very nicely without any problem. In the altitude hold phase, yes, that time also propulsion system worked very nicely, but the dispersion level was sometimes more than what we assumed before the flight.
This was one problem and because dispersion levels were more than expected, the guidance software was not able to handle it properly, so it was misbehaving. Instead of correcting, instead of reducing the thrust level, it was increasing the thrust level. So, our guidance software misbehaved. Along with the guidance software misbehaviour, with the control systems also there were limitations. All these three things combined made this landing a hard landing.
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