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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Jun 13 2013, 05:48 AM
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Member Group: Members Posts: 903 Joined: 30-January 05 Member No.: 162 |
I'm wondering if something like a corner reflector might be made of some high temperature (and chemical) resistant material, that could have it's dielectric properties, or reflection angle, (or something) that varies in a predictable way with temperature and or pressure.
The reflector could be dropped and then illuminated with a radio signal from an orbiter, and the return echo would be phase modulated, or whatever the device can be made to do to alter the signal, and then you would have a point on the surface that could me monitored for one or a very few parameters, for as long as the orbiter lasted. A reflector on an anemometer would frequency modulate the reflection (if done properly) in proportion to the wind velocity. Two such reflectors on a bimetallic arm on a pivot would introduce a bias to the wind signal that would be temperature related. Might be a way to get some very basic long term data from a few interesting sites. Just need to have a very simple, and robust device in the right location. |
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