sound radar is back ... naaaaaaah!

[klem]

Originally Posted by TomcatViP

I hve read nearly a thousand of aero books. 80% of wich are not with me at present time. Are you torturing me wih that request ?

Looking at your vid, you can hear the whispering once only the plane did pass in front the observer (the cameraman) and not before. This means tht the whine is affected by mach hence the most probable prop related effect (if the LE was mach effected all the wing would be )

I will stand firm on that (no ego related - just logics)

http://en.wikipedia.org/wiki/Vought_F4U_Corsair
The Japanese allegedly nicknamed it "Whistling Death", for the noise made by airflow through the wing root-mounted oil cooler air intakes.

The only sound I've heard from prop tips going through the sound barrier is on the Harvard/T6 which gives a kind of rasping effect.

(we must stop meeting like this!)

[Osprey]

Originally Posted by klem

http://en.wikipedia.org/wiki/Vought_F4U_Corsair
The Japanese allegedly nicknamed it "Whistling Death", for the noise made by airflow through the wing root-mounted oil cooler air intakes.

The only sound I've heard from prop tips going through the sound barrier is on the Harvard/T6 which gives a kind of rasping effect.

(we must stop meeting like this!)

Having been at Duxford many times (as I'm sure many others have too) I have to say I don't think that the Corsair really whistles all that much on a high speed pass. The Bearcat on the other hand makes a distinctive whistle, I have a nice video of it somewhere.