World of Warbirds on MSN

Rotary vs radial aircraft engines, the circular powerplants that changed early aviation

Part two of the Quest for Power series breaks down rotary and radial engines, why circular layouts solved cooling and reliability, and why they also came with nasty tradeoffs. From WWI rotaries to ...
The Autopian on MSN

The most complicated new engine has three cylinders, a rotating block, a stationary head, and is shaped like a circle

Meet the Birotary, a crazy new and complicated engine that has three cylinders arranged like a star, a rotating block, a ...