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Science
Related: About this forumDriving Mars Rovers: ‘It can get a little boring’
Nasa driver who has clocked up most miles on the Red Planet reveals what its really like to be behind the wheel of a space rover.
I met a man employed on Mars. Not just watching it from a distance, but doing things on its surface. Paolo Bellutta is his name and he drives Nasas Curiosity and Opportunity Rovers the only working cars in space. As he proudly tells me, Im one of the few people who has an interplanetary drivers licence. For further clarification hes also wearing a bright red jacket with Mars Rover Driver emblazoned across the back.
Let me back up a bit. Despite the 30-year old Lou Reed hit Satellite of Love predicting that Mars would soon be filled with parking cars, so far only four have made it to the planet. Bellutta has driven all but the first, the tiny Sojourner rover landed there by Nasas Mars Pathfinder mission in 1997 that lasted three months before losing contact.
Hes a leading figure in both the ongoing Mars Exploration Rover (MER) mission which landed Spirit and Opportunity in 2004 and in the most recent Mars Science Laboratory (MSL), which last year used a fiendishly complicated and previously untried sky crane to lower the nearly one tonne nuclear-powered, family-car-sized Curiosity almost exactly on target in the Gale Crater, a site hed helped select. On the day of the landing last August, Bellutta admits he was in pieces, although hes adamant he wasnt worried that Curiosity might be too. The team responsible for getting the rover down to the surface in one working piece had his complete trust: theyre really, really smart people, he says with a grin, so I bet my work on them. Nevertheless for all the work hed done in advance, and all that he was preparing to do on Mars, the descent itself was out of his hands. He claims to have been so nervous that despite having brought in his camera specially he failed to take a single picture.
The landing worked out almost exactly as planned. Things on Mars often dont. Even though it happened nearly four years ago, Bellutta is still visibly upset and seems almost lost for words trying to describe how Spirit became stuck in soft soil and why they couldnt find any way to get the stricken rover back on track. His team spent months attempting to simulate the conditions not easy when youve got to mimic the low gravity as well as the terrain and went through every combination of forward and backwards motion for the wheels, even using them as paddles to attempt to swim Spirit out (something which proved surprisingly effective, but came too late to save it/her). We tried everything, he says. But what, I ask, if youd known what you know now and done things in a different sequence? Perhaps, Bellutta says wistfully. You can tell its the perhaps which still needles him.
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http://www.bbc.com/future/story/20130501-getting-stuck-in-a-rut-on-mars
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Driving Mars Rovers: ‘It can get a little boring’ (Original Post)
n2doc
May 2013
OP
No one associated with the MER program owes anything close to an apology. Those things performed
Warren DeMontague
May 2013
#1
Warren DeMontague
(80,708 posts)1. No one associated with the MER program owes anything close to an apology. Those things performed
incredibly.
It's worth remembering that they were originally designed for a 30 day operational lifespan.
jakeXT
(10,575 posts)2. They weren't anticipating dust cleaning events
The solar arrays of the two NASA Mars Exploration Rovers (MER), Spirit and Opportunity, were expected to accumulate so much dust after 90 Martian days (sols) that they could no longer provide enough energy to guarantee continued surface operations. Instead, due in part to low dust accumulation rates and numerous dust cleaning events,they have carried out surface operations for over 2200 sols each.
http://adsabs.harvard.edu/abs/2010AGUFM.P53E1559H
http://adsabs.harvard.edu/abs/2010AGUFM.P53E1559H
Orsino
(37,428 posts)3. I'd say they're entitled to draw a penis or two. n/t