(B2431) wrote:



OK, I see where you are coming from. The pitot pressure DOES vary by altitude.
To compensate for that when measuring airspeed you use static pressure to give
you altitude. Some aircraft detect static pressure from holes on the side of
the pitot tube and others have the static ports located elswhere.



But you need BOTH Dan, you cannot measure airspeed AND altitude
unless you have BOTH pitot pressure AND static pressure...
--

-Gord.