[time-nuts] Re: Soviet mechanical space program clock

[Erik Kaashoek]

 From their website

The Clock is equipped with both built-in autonomous pulse generator and 
external high stability pulse in- put. The external pulses may come from 
either the АПВУ (Program-Timing Control Equipment) or KЛ110 TV unit.
During launch/injection and autonomous orbital flight phases the БЧК is 
time synchronized with the АПВУ (Program-Timing Control Equipment).
When the БЧК is time synchronized with the built-in generator the error 
is no more than 30 sec. a day. The external pulse time synchronized БЧК 
maximal error is 4.5 sec.

Erik.

On 1-9-2022 3:27, Joe Duarte via time-nuts wrote:
> Hi all – I thought this mechanical clock was very interesting. You can
> experience it in high res 3D here:https://soyuz-clock-viewer.vercel.app/
>
> I can't find any info on accuracy or stability. I'm thinking of the
> Hamilton mechanical ship's chronometers from WWII as a reference – what was
> their drift rate? I remember it was better than today's mechanical
> chronometer wristwatches.
>
> Curious Marc has technical details here:
> https://www.curiousmarc.com/space/soyuz-clock-mechanical
>
> Cheers,
>
> Joe Duarte
> _______________________________________________
> time-nuts mailing list --time-nuts at lists.febo.com
> To unsubscribe send an email totime-nuts-leave at lists.febo.com