Systems_Operator
New Member
Heya all!
I've been lurking here for about a week and a half now going through all this useful information, and I really have to share how impressed I am with the professionality of the users here!!
I am currently in the very early stages of going for my IFR ticket (after not having flown for like 7 years). Hopefully I should have my money together in a few months. Like many that I've read in the Changing Careers forum, I too have plans to leave the IT field, hence part of the decision to use this username. The other part of the reason is that I see a correlation between pilot and sysoperator....they both "operate systems", constantly fine tuning them to achieve a result. So there's that for my intro
To the question:
Both Gleim and Dogan indicate that when using an alternate static source, the air pressure inside the cockpit is usually lower than the airpressure outside the airplane, "due to the Venturi effect of the outside air flowing over the cockpit" (Gleim).
I suppose what's confusing me is: if air is flowing AROUND (and faster as compared to the air inside) a cockpit, shouldn't the air pressure OUTSIDE be less than the relative air pressure inside the cockpit?
I've been lurking here for about a week and a half now going through all this useful information, and I really have to share how impressed I am with the professionality of the users here!!
I am currently in the very early stages of going for my IFR ticket (after not having flown for like 7 years). Hopefully I should have my money together in a few months. Like many that I've read in the Changing Careers forum, I too have plans to leave the IT field, hence part of the decision to use this username. The other part of the reason is that I see a correlation between pilot and sysoperator....they both "operate systems", constantly fine tuning them to achieve a result. So there's that for my intro

To the question:
Both Gleim and Dogan indicate that when using an alternate static source, the air pressure inside the cockpit is usually lower than the airpressure outside the airplane, "due to the Venturi effect of the outside air flowing over the cockpit" (Gleim).
I suppose what's confusing me is: if air is flowing AROUND (and faster as compared to the air inside) a cockpit, shouldn't the air pressure OUTSIDE be less than the relative air pressure inside the cockpit?