When one thinks of the average airplane, odds are that propellers are part of that mental image. They've been a crucial component of airplane construction from the moment air travel found its footing ...

It's fairly common knowledge that when a supersonic aircraft approaches the sound barrier, what follows is the sonic boom. This transitory period between subsonic and supersonic, known as transonic ...

When you picture a propeller-driven aircraft, you probably imagine a single engine plane with the propeller spinning at the front. There's a good reason for that, as the front-facing design has proven ...