Many rovers have been sent to Mars and, as now, some are still working there. Does anyone know the maximum data capacity of each active rover?
- Curiosity
- Perseverance
- Zhurong
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2$\begingroup$ @NgPh - I supposed the opposite (max storage on board). Perhaps the OP could clarify? $\endgroup$– Jon CusterSep 8, 2021 at 13:14
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1$\begingroup$ ...which would probably leave Ingenuity as the winner, as instead of robust, low-density, high-reliability radiation-proof antique memories it uses modern off-the-shelf components which quite likely go into hundreds of gigabytes. $\endgroup$– SF.Sep 8, 2021 at 13:42
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3$\begingroup$ ...found it. 32GB flash memory on Ingenuity. I wonder how the rovers compare to that. $\endgroup$– SF.Sep 8, 2021 at 13:51
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3$\begingroup$ Haha. Found data for Curiosity and Perseverance. Both have 2GB of flash. Now just to find out about Zhurong! $\endgroup$– SF.Sep 8, 2021 at 13:54
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2$\begingroup$ @HelloZero005: Perseverance's maximum data rate is 2 MBit/s over a distance of 55000000000 meters. The maximum data rate for WiFi when Perseverance was designed was, I believe, 11 MBit/s over a distance of 100m (maybe 54 MBit/s). Considering that signal strength degrades with the square of the distance, Transmitting data over 55000000000 meters is roughly 300000000000000000 times harder than over 100m. So, they managed to get 1/27 to 1/6 the data rate with 300000000000000000 times the signal attenuation. I think that's pretty good. $\endgroup$– Jörg W MittagSep 10, 2021 at 7:52
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