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

[Matt Bailey]

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.