Aiming a machine gun through a biplane's propellers was no easy feat. Then along came an invention that made it possible to ...

Interestingly, the plane uses contra-rotating propellers, which rotate so fast that the tips move faster than the speed of ...

It was noisy to the extreme. The aircraft never broke the sound barrier in flight, but the large squared-off propeller blades would travel constantly faster than the speed of sound at around 900 ...

(Tony Poynor via AP)(Tony Poynor / AP) VICTORIA, Texas (AP) — A twin-engine propeller plane crashed ... when he started hearing the sound of a small plane engine very close to him.

Propeller Plane Crashes Onto a Texas Highway ... Tony Poynor said he was approaching an intersection when he started hearing the sound of a small plane engine very close to him.