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1. 09:00 AM - Re: Re: Newbie with PM alternator feed question (Robert L. Nuckolls, III)
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| Subject: | Re: Newbie with PM alternator feed question |
At 09:14 PM 10/21/2015, you wrote:
>
>Bob,
>
>Working on the details with ULPower (the engine manufacturer). Not
>so much a concern for my endurance scenarios, but if I want to use
>everything I'm going to have on the aircraft, (continuous loads), I
>am in excess of 30 amps. I have my notes which I will edit a bit
>and post. I would very much like some outside review of my "plans"
>to see if I am on the right track with things...just need a few days
>to get back into my notes. Thanks for the interest and patience!
>
>Dave
Take a look at the documents on the website at:
http://tinyurl.com/9rt6ymn
You'll find the load-analsysi work product of
several List members in Excel spread sheets.
There is also a blank planning form that I use
as the FIRST step of planning a new electrical
system.
Fill out one page for each bus . . . battery,
main, e-bus, engine, etc. List the load and
it's demands under each of the flight conditions.
I've run load analysis studies on a lot of airplanes,
one that even included pitot heat STILL came to
less than 27A for a max continuous running load.
It's really easy to get bogged down in the notion
that an alternator be sized to run everything all
the time . . .
Bob . . .
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