Originally Posted by
alexh1987
We (Lufthansa-group airline) have installed them on all our A320 and as someone who lives directly under the approach path of a nearby airport I can tell you that these vortex generators really make a difference. The whisteling noise is completely gone after the modification.
Oh yes, the noise relief is now 6dB at least, that means that the noise energy produced is now divided by 4.
In other words, proviously the silly A320's FOPs emitted 3 times more noise than all the rest of the plane!
