From piston engines to future hydrogen fuel celled engines, the history of aero engines is full of revolutions.

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 ...

In this fifth number of Smithsonian Annals of Flight Leonard S. Hobbs analyzes the original Wright Kitty Hawk Flyer engine from the point of view of an aeronautical engineer whose long experience in ...