2
$\begingroup$

What is true static pressure? How do we define it? Is it same as corrected static pressure for installation and errors? ARINC 429P1-18 defines Static pressure as corrected and uncorrected where in few places I have heard this term "True static pressure".

| improve this question | | | | |
$\endgroup$
  • $\begingroup$ A reference of where you've heard/seen this would be useful, as I'm not familiar with the term $\endgroup$ – selectstriker2 Dec 11 '18 at 22:02
  • $\begingroup$ Aviation and Aeronautical Engineering, Volume 6, Section "Altitude errors in Aerial Navigation".books.google.com/… $\endgroup$ – Huntkil Dec 11 '18 at 22:37
  • $\begingroup$ The text you linked to indicates that the "true static pressure" takes into consideration airspeed, position on the aircraft, and air density $\endgroup$ – selectstriker2 Dec 11 '18 at 22:41
  • $\begingroup$ And it also might be beneficial to note that the text is almost a century old, so some of the terminology and error values may be different than those used today $\endgroup$ – selectstriker2 Dec 11 '18 at 22:43
  • $\begingroup$ How is this different from static pressure we get from pitot static tube ? I have never heard this term before. I was working on flare guidance system and they are also using "true static pressure " for computational purpose. So what is this term and why are we using it ? $\endgroup$ – Huntkil Dec 11 '18 at 22:45
1
$\begingroup$

From what I can see, the "true" static pressure is the measured static pressure corrected for airspeed & position (Static Source Error Correction).

In my copy of ARINC 429 (May 2004) I don't see a label definition that fits this "true static pressure". Label 171 can be used for manufacturer defined data, so I would see if you can get a better answer from the manufacturer of your data source.

| improve this answer | | | | |
$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.