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Anonymous Poster

Measuring Air Flow and Static Pressure with Pitot Tubes

08/22/2008 2:40 AM

pls give me information about air flow and static pressure calculation withe help of pitot tube what is the formula and how to calclate hmidity of air?
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PWSlack
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#1

Re: air flow and static pressur measrement with pitot tube

08/22/2008 3:33 AM

<...air flow and static pressure calculation withe help of pitot tube...>

http://cr4.globalspec.com/thread/25632/Air-Flow-and-Static-Pressure-Measurement-with-Pitot-Tube

<...how to calclate hmidity of air...>

It isn't calculated. It is measured using a dry-bulb thermometer, a wet-bulb thermometer and a psychrometric chart.

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miketheboilerguy
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#2
In reply to #1

Re: air flow and static pressur measurement with pitot tube

08/23/2008 8:44 PM

This is the same method that aircraft use for measuring air speed. I would jump into an aviation thread or web site. It really is straight forward and linear.

As usual PW has pointed in the best place.

FYI Francois Pitot first used this idea to measure the speed of a boat through the water.

Mike

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John Mason
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Location: North Wales UK
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#3
In reply to #2

Re: air flow and static pressur measurement with pitot tube

08/20/2009 5:38 PM

Yes but the pressure on all the aneroid instruments are compaired against the static sample taken from the static head. And if the static head fails say a bee flies up it blocking it the way to restore static pressure to all the other vital instruments is to smash the glass of the vertical speed indicator that allows static pressure to be returned to the other vital instruments
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