REFLECTOR: Air pressure question...

Richard Riley richard at riley.net
Fri Jun 17 13:06:50 CDT 2005


OK, isn't that static pressure, not pitot (dynamic) pressure - which would 
vary with speed?

At 09:57 AM 6/17/05, you wrote:
>You may be confused but you are also correct... My pitot pressure value 
>was for "standard conditions". I realize now that this did not answer your 
>question about pitot pressure at 20,000 ft.
>Maybe (I am guessing here) at 20,000 ft since the absolute pressure is only
>
>6.67 / 14.5 x 100 = 46% of sea-level, then perhaps the pitot pressure 
>would be decresaed by the same percentage.
>
>1.45 psi x .46 = 0.667 psi.
>
>However, then there is the non-standard temperature at 20,000 ft that may 
>enter in??? Would the E6B help here??
>
>Sid
>
>----- Original Message -----
>From: "Richard Riley" <reflector at tvbf.org>
>Sent: Friday, June 17, 2005 10:48 AM
>Subject: Re: REFLECTOR: Air pressure question...
>
>
> > OK, now I'm really confused.
> >
> > The only email I have from Sid on this topic reads:
> > ===================
> > 6.76 psi at 20,000 ft
> >
> > from http://www.tvbf.org/mailman/listinfo/reflector
> > >
> > > Visit the gallery! http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery! www.tvbf.org/pipermail
> > Check old archives:



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