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Bruce Farquhar Bruce Farquhar is offline
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Default How does a thermocouple have enough power to operate a gas valve?

On Tue, 11 Dec 2018 20:31:57 -0000, Rod Speed wrote:



"Bruce Farquhar" wrote in message
news
On Tue, 11 Dec 2018 19:44:25 -0000, Rod Speed
wrote:



"Bruce Farquhar" wrote in message
news On Tue, 11 Dec 2018 17:39:17 -0000, Max Demian
wrote:

On 11/12/2018 17:23, Bruce Farquhar wrote:
On Tue, 11 Dec 2018 16:56:12 -0000, Bill Wright

wrote:
On 09/12/2018 16:40, Bruce Farquhar wrote:

A thermocouple produces enough to power a spacecraft?!? Or just for
some small electronics?

On Sat, 08 Dec 2018 21:04:59 -0000, Brian Gaff
wrote:

I'm sure you know this but the Voyager spacecraft are using
thermocouples
using the heat from decaying plutonium for power all the way out in
the
cosmos. it may be reducing now but its been one heck of a long
time.
Brian

He didn't say to power the spacecraft he said 'for power'.

So it moves by magic then?

Very few spacecraft are electrically powered.

Whatever they're powered by should be able to give off some electricity,

Problem is that they are powered by the ****ing great rocket
that is now quite some distance away from the satellite now.

like a petrol car does.

Nothing like a petrol car does.


So they don't have any manoeuvring thrusters?


Yes, but those don't generate electricity.


They could do, and very effectively.