DailyDirt: Space Robots...
from the urls-we-dig-up dept
The satellites we've been sending up into space are getting more advanced all the time. Even some of the really old spacecraft we launched in the 1970s have surprisingly continued to operate and perform useful tasks. Here are just a few more examples of space gear that hopefully won't become space junk anytime soon.- Voyager 2 is about 14 BILLION kilometers from earth now, but it's still getting software upgrades after 34 years in service. Even with its plutonium batteries, it'll cease to function in the mid-2020s. And unlike the Terminator, it won't be back (hopefully). [url]
- A 3m-by-1m spacecraft weighing about 400kg will relatively cheaply collect medium-resolution images of the earth using radar. The radar sensors will be able to see the the earth's surface in any weather -- and a series of these satellites would be able to image any location on earth within 24 hours. [url]
- A robotic arm with a sticky hand will grab onto objects in space with the help of electrostatic forces. This robot arm could help clean up space junk or launch/retrieve nanosatellites. [url]
- To discover more links on space exploration, check out what's floating around in StumbleUpon universe. [url]
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Filed Under: robots, satellites, space, spacecraft, voyager2
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Great quote from the Hitchhiker's Guide, BTW...
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lol
I am Nomad
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Shameless plug.
https://wiki.openstreetmap.org/wiki/Beginners'_guide
Then use SRTM data from everywhere to produce a beautiful 3D map.
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Voyager 2 has lasted 34 years and will probably keep operating for at least another 10? I guess NASA used to have better quality control in the old days.
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They could probably make them for 1/4 the original cost, but they'd only operate for 2-5 years, and probably have a 40% failure rate.
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Agreed - if the requirement were 1/4 the original cost, adjusted for inflation.
It is not really all that complicated ... cost, life expectancy and schedule all play significant roles in the design considerations of any project be it space based or earth bound. Space missions tend to be more complicated because one can not simply remove and replace bad components.
There have been many missions to space lately which have far exceeded their design goals, the Mars Rovers for example.
Any device intended to withstand harsh environments is going to require above average resources to design, construct and fund, and it will have a limited life cycle. This is just the way it is and pretending otherwise is being unrealistic.
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Yes, that was before "Faster Better Cheaper".
http://history.nasa.gov/dan_goldin.html
There was a significant increase in the number of failures after implementation of the new NASA mantra and it became readily apparent that one could only have two of the three at any particular time - and changing in mid stream caused all sorts of chaos.
In addition, the old circuitry is much more resistant to the adverse affects of the harsh environment of space. Discrete components have much larger junction dimensions compared to their integrated circuit replacements. High energy particles cause problems in unshielded IC chips, the symptoms of which range from complete failure to bit flip. Redundant systems, error correction and shielding help, but added complexity comes at a price.
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Great, they're making robot thieves now. A perfect addition to your botnet.
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