Weight Issues

[Richard Strickland]

The point was(is) the electrics are measured with ALL the energy producing
elements contained, whereas the liquid fueled units are not(including air at
standard pressure).  If you are going to make an exception to FAI
rules--which I think it is--for the fueled units to be weighed without fuel,
then it would naturally follow the electrics be weighed without batteries.
One could forward an argument that the fuel airplanes need to carry around
their own air--let's see--about 44cu. ft. ought to do it by some very quick
calcs.for a 10 min. flight at 60% ave. throttle--that bottle and controls
wouldn't weigh all that much....

Again, wouldn't this just be a clarification of an existing exception?

Richard

----- Original Message -----
From: "Adam Glatt" <adam.g at sasktel.net>
To: <discussion at nsrca.org>
Sent: Monday, February 28, 2005 12:53 PM
Subject: Re: Weight Issues


> Guys, this myth needs to be addressed at some point.
>
> Chemical batteries store energy in the chemical formulations present.
> The atoms that compose these battery chemicals don't leave or enter the
> battery - they are there at the time of manufacture, and are there until
> the cell is is no longer sealed.  In the discharged state there is a
> prevalence of a low energy chemical formulation.  Apply a greater
> voltage across the battery to cause electrons to move through it, and
> those chemicals will gain (or lose) the electrons while another area of
> the battery loses electrons.  The net result is higher energy molecules
> are formed.  The higher energy molecules would love to undergo a
> reaction and gain those electrons again, but they can't because of the
> electric field already built up by a few molecules doing it already
> (lithium polymer builds 4.2v).  Give the build up of electrons a way to
> get back to the other side, and they'll take it.  Don't believe me?
> Touch your battery's negative line to the a metal water pipe in your
> house.  If the battery could cause current to flow without electrons
> re-entering on the other side, there would be a current flow.  There
> will be no current flow.
>
>  This is similar in function to a capacitator, which stores energy in
> electric fields.  A capacitor also gains as many electrons on the
> negative side as it loses on the positive side.
>
> Battery mass does not change.  Once sealed, it stays constant until
> unsealead.
>
> Adam Glatt
>
> John Pavlick wrote:
>
> >John,
> > That would make too much sense (11 lbs with fuel for all). It would also
> >put an end to a lot of nonsense (should the batteries be charged?) I
> >suggested this a while ago (in so many words) but nobody thought it was a
> >good idea. I think a lot of problems with our rules come from the way
things
> >are worded - it allows for some pretty interesting interpretations. Maybe
> >the next batch of rule changes will be a little more explicit so we can
all
> >concentrate on flying instead.
> >
> >John Pavlick
> >http://www.idseng.com
> >
> >
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