A320 airflow change at roughly 2-3,000ft
Hi there,
I was flying an A320 the other day and on approach at roughly 2-3,000ft there was a fairly significant change in airflow sound. I was wondering what was likely to have caused this, I haven't noticed it before but perhaps this was the bleed changing from intermediate to high pressure bleed? Cheers, apple |
Something to do with the forward outflow valve, I believe?
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Originally Posted by applecrumble
(Post 11310917)
Hi there,
I was flying an A320 the other day and on approach at roughly 2-3,000ft there was a fairly significant change in airflow sound. I was wondering what was likely to have caused this. You probably heard the fuselage drain valves opening. See page 3. ”Cabin fuselage drain valves : A number (approximately 15) of piston-type drain valves are fitted along the bottom line of the fuselage, to drain condensation water or other fluid leaks. They close when ∆P between the cabin pressure and the outside ambient air pressure exceeds a certain value (between 1 and 2 PSI, i.e. 70 to 140 hPa). But their effective section is small (about 50 mm2 each).” |
Thank you so much guys! Always learning.
Here’s a picture: https://aviaforum.ams3.cdn.digitaloc...56184c94f1.pdf |
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