[simpits-tech] Zero point on a two needle altimeter

[Simon Kelsey]

Actually Matt, I think both of you are wrong <VVVBG>

I seem to remember "Kohlsman" or "Kohlsmann"...

<ducks>

Simon

----- Original Message -----
From: "Matt Bailey" <mattb@rtccom.net>
To: <simpits-tech@simpits.org>
Sent: Sunday, October 27, 2002 8:06 AM
Subject: Re: [simpits-tech] Zero point on a two needle altimeter


> Oh, sorry, spelling error. :) I had heard the term, I just don't
> remember ever reading it. :)
>
> -Matt Bailey
>
> Gene Buckle wrote:
> >
> > I think he's referring to the "Kollsman" window, which is just a
pressure
> > adjustment you make to the altimeter.  AFAIK, Kollsman is/was an
altimeter
> > manufacturer.
> >
> > g.
> >
> > On Sat, 26 Oct 2002, Craig Rochester wrote:
> >
> > > What is a Colesman window?
> > >
> > > -----Original Message-----
> > > From: simpits-tech-admin@simpits.org
[mailto:simpits-tech-admin@simpits.org]
> > > On Behalf Of Matt Bailey
> > > Sent: Saturday, October 26, 2002 8:44 PM
> > > To:   simpits-tech@simpits.org
> > > Subject:      Re: [simpits-tech] Zero point on a two needle altimeter
> > >
> > > I thought about a pressure box, but that seens like it would be tricky
> > > to meter out exactly the right pressure to get a precise, accurate
> > > reading. It would be cool if you could make it work though, you could
> > > just output the atmospheric pressue in the sim...this would even allow
> > > the Colesman window to work.
> > >
> > >       -Matt Bailey
> > >
> > > Craig Rochester wrote:
> > > >
> > > > Dumb questions about altimeters, speed indicators, etc. If they work
like
> > > > this: http://home.swipnet.se/~w-65189/AP_html/pitot_static.htm why
can't
> > > you
> > > > just output two pressures?  The velocity pressure could be
controlled by a
> > > > voltage driven pressure regulator(V/P) and compressed air.  The
barometric
> > > > pressure would require vacuum and a vacuum version of a V/P.
> > > >
> > > > This way you could use standard instruments without modification.
> > > >
> > > > Craig R.
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