The Bristol Centaurus is a 53-litre radial engine from an era when aircraft relied on raw displacement and mechanical force.

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 Breda-Zappata BZ.308, a sleek Italian four-engine airliner, first flew in 1948. Designed by Filippo Zappata, it blended ...