Aut cum scuto aut in scuto
I've been that close to that beast at the Reno Air Races. And it's awesome.
Talk about 'Motor Porn'.If I was younger, I would've had an 'accident' in my tighty whities!(Now my accidents are the result of age. Sigh)
B- Actually, the correct term is contra-rotating props, when both are coaxial. Counter-rotating props are used on multi-engined aircraft like the P-38 Lightning, where the prop rotation is opposite each other to help cancel aerodynamic instability due to torque.