[R-390] OT - Transmission lines - local

[Randy and Sherry Guttery]

Ok, I hear the grumbles - so my last post on this...

On 2/24/2011 7:15 PM, James A. (Andy) Moorer wrote:
> Let's see now - if I do the arithmetic correctly, that's a cool
> /million/ watts.
>
Actually - a bit more...
At sea our normal "ahead standard" was 112 turns on each 
shaft... which just happened to push us through the sea at 
roughly 12 knots.   At that speed (roughly 57% of Flank- or 
maximum effort) the generators were putting out roughly 1060 
volts @ 1414Amps - or roughly 1.49MWatts (per shaft, 
remember). Flank - which pushed the plants to capacity - was 
"rated" 1500V @ 2000Amps per shaft... or 6.0MWatts (combined 
both shafts) - which in "theory" should have pushed us to 22 
knots - but the best we achieved was 21knots.  BTW - the 
entire loop had a combined series resistance (motors, 
switches, buses, etc) of  .75ohms (that's *point seventy 
five* ohms)....

Sorry if these "off topic" posts perturbed some folks -  in 
talking about the ship's propulsion systems, etc. - but I 
must note - while this part of the ship was shoving it's 
19,000 tons of "us" around and supplying 120Volts to various 
equipments - those equipments included a goodly number of 
R-390As  which were still very much in use. So while that 
ship's propulsion and ship's service generators may be "off 
topic" - it was the environment and use that the R-390/A/1s 
were designed and meant for.   So if that part of their 
history is boring, sorry...  but the fact is - it IS part of 
these radio's heritage...

-- 
randy guttery

A Tender Tale - a page dedicated to those Ships and Crews
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