sahrens
Well Known Member
I have been researching pitot-static testing and have read many threads. None of them seem to address this question. I have finished connecting the pitot tube and AOA lines to the Dynon pitot tube. I am about to close the wing and would really like to know the connections up to the fuselage are air tight.
I am considering lightly (read low) pressure testing of those lines. Something similar to the fuel tank test. I do not have any flight instruments connected, so the limit to the pressure would be the connectors and the tubing.
Assuming I develop some kind of test, what would be an appropriate pressure (1, 5, 10 psi?) The allowable drop in pressure is 100 ft/min during an IFR certification test, but that assumes a complete pitot-static system with pressure sensitive instrumentation. How long would the lines have to hold constant pressure before showing any reduction? (1min, 5 mins, an hour?) Is this really measurable given no flight instruments?
The balloon fuel tank process is a great start, but it provides no direct pressure reading and is not sensitive enough to indicate slight pressure changes. Just trying to ensure I am not working inside the access panel trying to fix a leak I could have discovered earlier. Thanks for any insight.
I am considering lightly (read low) pressure testing of those lines. Something similar to the fuel tank test. I do not have any flight instruments connected, so the limit to the pressure would be the connectors and the tubing.
Assuming I develop some kind of test, what would be an appropriate pressure (1, 5, 10 psi?) The allowable drop in pressure is 100 ft/min during an IFR certification test, but that assumes a complete pitot-static system with pressure sensitive instrumentation. How long would the lines have to hold constant pressure before showing any reduction? (1min, 5 mins, an hour?) Is this really measurable given no flight instruments?
The balloon fuel tank process is a great start, but it provides no direct pressure reading and is not sensitive enough to indicate slight pressure changes. Just trying to ensure I am not working inside the access panel trying to fix a leak I could have discovered earlier. Thanks for any insight.
