*** Posted by run ***
I've always experienced the noise as gradually increasing, but in a couple of weeks I'm going on a DC-10 to US & then I will try to listen for it.
I don't see any reason why this should happen, but I'm looking forward to listen myself. In the F-16 it's a gradual increase in noise.

run

[Recently homecomed from a charter trip to south Spain, one Q about drag lies on my tounge:

During the actual 737's acceleration in air, airnoise around the fuselage appears quite sudden and keeps in the same sound level for the rest of acceleration and flight.
I've done the same observation in as well a 727, as an Airbus, however I can't estimate anything about the speed for the different planes when this happens.
Therefore do my question go like this: Is there, as for the sound barrier, some draglimits related to the speed, wich concerns all planes or is it highly related to the design of the plane/fuselage?

How experies You this phenomena in the F-16?

Kim]