Jim  S wrote:

Not sure what difference it would make.  Dynamic pressure at 120 kias is a little over 7" of WATER (that's about 0.55" Hg or 0.27 psi.  At 150 kias q is 0.87" Hg (0.43 psi).  That's if you recover it ALL with NO losses at all.  For takeoff purposes, at 60 kias it's 0.068' Hg or 0.137 psi
Don't use it all in one place ... Jim S.

 

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The velocity in the tube is much greater than 120 knots I think, although have not calulated it. IF Rusty is not getting significant loss in his system before the static probe then the velocity can be calculated . Divide 30/27=1.11 pressure ratio. Velocity here would be 300 mph!

 

Bernie