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CHENNAI: As the world rings in the New Year on January 1 Indian space scientists will have another reason to uncork the champagne: The day will mark 100 days of the Mars Orbiter Mission (MOM) in the red planet's orbit.
What's more, MOM which was given a life span of 180 days may well continue to study Martian details for up to 15 years.
This is because the spacecraft has saved so much during the journey to Mars that it still has 37kg of fuel. It takes only two kg of fuel a year to keep MOM in orbit. The electronic systems which are tested for a life of more than 15 years will hold the key to MOM's longevity as they could get damaged in solar flares and unexpected incidents in space.
"We are so excited about the 100th day of MOM in orbit. So far the spacecraft has been in the pink of health. And it looks like it will live on for several years," MOM project director S Arunan told TOI. Isro chairman K Radhakrishnan said scientists were looking forward to June — well past the spacecraft's assigned life of mid-March — when it will go through a phase of no communication with earth.
"This would last two weeks when the sun comes in between MOM and Earth cutting off the signal," said Radhakrishnan. "This will be an ultimate test for the spacecraft's autonomy (the ability to gauge its own health, remain in orbit and carry out experiments without orders from Earth)."
The Isro chairman said fuel was only one of the limiting factors of any spacecraft. "The life of a spacecraft depends also on the longevity of its batteries and electronic systems which we had subjected to endurance tests," he said.
The systems pass through what scientists call an 'infant mortality test,' were they undergo 168 hours of burn-in (under high temperatures). This is to ensure they withstand the extremities of space weather. "Our systems have passed all these tests, so hopefully MOM will have a long life," said Radhakrishnan.
That would mean a higher probability of spotting something interesting on and around Mars. MOM is fitted with five instruments, including a methane sensor that looks for methane — the definite indicator of past life — and an absorption cell photometer to pick up traces of deuterium and hydrogen which could suggest early existence of water on the red planet. The other instruments are a colour camera, an infrared spectrometer and a composition analyser.
MOM marks 100 days on New Year, to live for years - The Times of India
What's more, MOM which was given a life span of 180 days may well continue to study Martian details for up to 15 years.
This is because the spacecraft has saved so much during the journey to Mars that it still has 37kg of fuel. It takes only two kg of fuel a year to keep MOM in orbit. The electronic systems which are tested for a life of more than 15 years will hold the key to MOM's longevity as they could get damaged in solar flares and unexpected incidents in space.
"We are so excited about the 100th day of MOM in orbit. So far the spacecraft has been in the pink of health. And it looks like it will live on for several years," MOM project director S Arunan told TOI. Isro chairman K Radhakrishnan said scientists were looking forward to June — well past the spacecraft's assigned life of mid-March — when it will go through a phase of no communication with earth.
"This would last two weeks when the sun comes in between MOM and Earth cutting off the signal," said Radhakrishnan. "This will be an ultimate test for the spacecraft's autonomy (the ability to gauge its own health, remain in orbit and carry out experiments without orders from Earth)."
The Isro chairman said fuel was only one of the limiting factors of any spacecraft. "The life of a spacecraft depends also on the longevity of its batteries and electronic systems which we had subjected to endurance tests," he said.
The systems pass through what scientists call an 'infant mortality test,' were they undergo 168 hours of burn-in (under high temperatures). This is to ensure they withstand the extremities of space weather. "Our systems have passed all these tests, so hopefully MOM will have a long life," said Radhakrishnan.
That would mean a higher probability of spotting something interesting on and around Mars. MOM is fitted with five instruments, including a methane sensor that looks for methane — the definite indicator of past life — and an absorption cell photometer to pick up traces of deuterium and hydrogen which could suggest early existence of water on the red planet. The other instruments are a colour camera, an infrared spectrometer and a composition analyser.
MOM marks 100 days on New Year, to live for years - The Times of India
