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 ...

Powerful and dependable, the Rolls-Royce Merlin aero engine was fitted to many of the most significant warplanes of the ...

Bore and Stroke: 127 mm (5.0 in.) x 140 mm (5.5 in.) Charles Lawrance, originally a race car engine designer, built his first air-cooled aircraft engine in 1921 for a Navy contract. The 149 kW (200 hp ...

It began with one man’s vision that the best airplane can only be designed around the best engine. That philosophy of Pratt & Whitney founder Frederick B Rentschler still applies today as the business ...