[r9etb]

I don’t have any scientific evidence, but am absolutely convinced that hearing a Merlin engine fly by increases testosterone production.

Agreed. I was going to comment that the Spitfire is one of the coolest-sounding planes I've ever heard.

[yarddog]

On the website dedicated to General Robert L. Scott, there is the sound of a P-40 Allison engine roaring over. It is one of the most throaty yet beautiful sounds one can imagine.