Gday Gary
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When was the last time you saw someone bothering to oil or cool a mouse trap?
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Never, but that level of mousetrap cant tell me how its feeling either :-)
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Consider the use of ship-to-ship communications using semaphores.
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You must be psychic :-) as i had actually written about that method as a "tongue in cheek" reply as to how to do "mechanical" comms, but something in the probe has to know what to send and something has to drive the semaphore mechanism ( and that wont be by clockwork )
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brainstorms the use of an orbiter bouncing RADAR off reflective
targets on the lander.
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Again, that requires some form of electronics feedback loop on the lander to control the spin rates, and if the electronics involved can do that, i assume they could do std comms.
Again, all good fun to theorise, but if its too hot for std electronics, i cant see how purely mechanical can replace it ( as much as i luv the idea )
Andrew