High-Temp Electronics For Venus Exploration, recent advances |
High-Temp Electronics For Venus Exploration, recent advances |
Mar 13 2013, 03:36 PM
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Member Group: Members Posts: 127 Joined: 20-April 05 Member No.: 291 |
(MOD NOTE: Started a new topic for this discussion to continue. Please remember the 'no sci-fi engineering' provision of rule 1.9. Have fun!)
Also, since I'm thinking about surface operations on Venus, the state-of-the-art in high temperature electronics has advanced quite far in the past decade. Its now possible to buy off the shelf chips from vendors designed to operate at the 250-300 C range. Meanwhile basic functionality has been tested at and beyond the temperatures needed for long-term surface operations on Venus: http://www.grc.nasa.gov/WWW/SiC/ http://www.gizmag.com/extreme-silicon-carb...ctronics/16410/ http://www.grc.nasa.gov/WWW/SiC/publicatio...Contact2010.pdf Another decade or so and a long-term Venus lander could be possible with (practically) off the shelf electronics! |
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Feb 8 2017, 08:19 PM
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Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
https://arstechnica.com/science/2017/02/venus-computer-chip/
An oscillator is a very important step in creating a full Silicon Carbide based CPU capable of operating a Venus temperatures. 1 MHz doesn't sound like much, but it is more than enough for basic analysis. The hard thing to get working is an imager - high temps mean leaky pixels. This is yet another great example of NASA dual use, with this tech being very useful for deep well operation. -------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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Feb 9 2017, 09:28 PM
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
The hard thing to get working is an imager - high temps mean leaky pixels. It may be interesting for those who don't know – cameras used for amateur photography of Deep Sky Objects are cooled internally, reducing the incidence of such noise. A galaxy or nebula may be roughly 1/100,000th as luminous as a planet, and cooling the camera to, say, -15C when outside temperatures are +15C can help tremendously in producing a clear image, whereas this is not needed for imaging planets. On the surface of Venus, the luminosity isn't a problem, but the temperature is. On the other hand, another solution to this problem would be to provide passive or active cooling for just long enough to take one image, then let the camera die. Potentially, almost all of the science value would be in taking a single image as soon as possible after landing. |
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