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Mars Rover
MakesMission Mars
Possible
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This is marsrover
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Mars Rover ???
A Mars roveris an automated motorvehicle which propels itself across the
surface of the planet Mars after landing.
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Each of these rovers
was created by a group
of scientists working at
NASA
Most of the work and
development of the spacecraft take
place in the Jet Propulsion
Laboratory.
Developer
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III.Sojournerrover, Mars Pathfinder,
landed successfully on July 4,
1997. Communications were lost
on September 27, 1997.
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IV.Spirit(MER-A), Mars Exploration Rover,
landed successfully on January 4, 2004. Rover
was still operating as of April 2010, 6 yearsafter the original mission limit, but its wheels
were trapped in sand.[2]As of January 26,
2010, NASA has admitted defeat in its efforts
to free the rover and stated that it would nowfunction as a stationary science platform.
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V. Opportunity(MER-B), Mars Exploration
Rover, landed successfully on January 25,
2004. Rover was still operating as of May
2010, surpassing the previous record for
longevity of a surface mission to Mars on May
20.
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Technical Parts
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Rover Capabilities
Power : The rovers can generate power with their
solar panels and store it in their batteries.
Images : The rovers can take color, stereoscopicimages of the landscape with a pair of high-
resolution cameras mounted on the mast.
Reading : They can also take thermal readings with
a separate thermal-emission spectrometer that uses
the mast as a periscope.
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Drill :The rovers have a magnifying camera,
mounted on the same arm as the drill, that
scientists can use to carefully look at the finestructure of a rock. This drill is officially
known as the Rock Abrasion Tool (RAT).
Analyzers : The rovers have a massspectrometer that is able to determine the
composition of iron-bearing minerals in rocks.
Rover Capabilities(cont.)
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Collector : There are magnets mounted at
three different points on the rover. Iron-bearing
sand particles will stick to the magnets so that
scientists can look at them with the cameras or
analyze them with the spectrometers.
Communicator : The rovers can send all of thisdata back to Earth using one of three different
radio antennas
Rover Capabilities(cont.)
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Rover Specs
To pack in all of this instrumentation, motorizationand power generation, the rovers are pretty big --
perhaps the size of a small riding lawn mower. Here
are the stats :
1.5 meters (4.9 feet) high (with the mast up)2.3 meters (7.5 feet) wide
1.6 meters (5.2 feet) long
174 kilograms (384 pounds)
Maximum speed: Perhaps 30 meters (about 100
feet) per hour, and 100 meters at most per day
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Panoramic cameras:
Pancam is a multispectral, stereoscopic, panoramic
imaging system consisting of two digital cameras
mounted on a mast 1.5 m above the Martian surface.
Cost: Approximately $820 million (for both rovers)
$645 million for design/development + $100 million fothe Delta launch vehicle and the launch + $75 million
for mission operations
Rover Specs(cont.)
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Inside the Rovers
The body of a rover is an enclosed box called
the Warm Electronics Box (WEB). This box isessential because temperatures at night can fall
to -100 degrees C (-150 F). The batteries would
stop functioning, as would many of theelectronic components, if some warmth were
not provided to get the temperature up toward 0
degrees C (32 F).
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Power andelectronic systems
Its power system includes two
rechargeable lithium ion batteries, that
provide energy when the sun is not
shining, especially at night. Over time, the batteries will degrade
and will not be able to recharge to full
capacity.
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The rovers use a RAD6000 computer produced by BAE
systems.
This processor is nearly identical in architecture to an
old PowerPC processor used in early Macintosh
computers. By today's standards, these processors are
slow.
They run at 20 megahertz, about 1/100th the speed of a
typical desktop computer today.
They have 128 kilobytes (KB) of RAM, 256 KB of flash
memory and some ROM to hold the boot code and
operating system.
There are no disk drives.
The Onboard Computer
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NASA rovermission goals
Determine whetherlifeever arose on Mars
Characterize theclimate of Mars
Characterize the geology of Mars
Prepare for humanexploration
Determine thedistribution andcomposition of
minerals, rocks, and soils surrounding thelanding sites
Search for andcharacterize a variety of rocks
and soils that holdclues to past water activity
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Achievements
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Reference
http://en.wikipedia.org/wiki/Mars_rover
http://en.wikipedia.org/wiki/Mars_Exploration
_Rover http://marsrover.nasa.gov/overview/
http://www.space.com/marsrover/
Goggle images
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Thank you
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