The P51 whine

[Simpo Two]

A freind asks what causes the P51 to whine during certain manouvers. I thought it was the supercharger, but then Spitfires have the same and sound different. Google dosn't help, half the answers being supercharger and half gunports... does anyone have a definitive answer? Maybe both?

[Simpo Two]

Well I suppose if it goes up and down with rpm it's supercharger, and if it's speed dependent it's gunports. Still not sure though...

[Simpo Two]

Clearly we need to borrow one, tape over the gunports and see if that stops it...

[Simpo Two]

2 sMoKiN bArReLs said:

Completely unrelated, but whilst watching Mustangs I stumbled over this:

https://www.youtube.com/watch?v=pmy_8bUMOIU

I like the one on the beach best when all the deck chairs etc are scattered!

6'38" is only a few feet away from being the accidental manouver now called 'a Hunter'

[Simpo Two]

[Simpo Two]

Guvernator said:

Didn't some dive bombers like the Stuka also make a similar noise or have I watched too many old war movies?

They were deliberately fitted with sirens to intimidate.

[Simpo Two]

Guvernator said:

That is genius. Doesn't explain why EVERY plane in a war movie seems to make that sound when it goes into a dive though.

Or why every movie has that clip of early He-111s over Spain...