As with many things in technological development, identifying the most revolutionary designs depends in part on what aspects one wants to stress. And when it comes to commercial aircraft engines, it ...

The first recognizable internal combustion engine was developed by Nikolaus Otto in 1861. Since then, the gasoline-powered engine has evolved immensely. However, the principles that underlie how ...

Speed, efficiency, and altitude are the name of the game when it comes to aircraft; all of which benefit from smaller engines. "There's no replacement for displacement" applies less to piston-engine ...