Wright R-540 Whirlwind

R-540 Whirlwind
Wright R-540 Whirlwind installed in a Travel Air 16E at the Historic Aircraft Restoration Museum
Type Air-cooled 5-cylinder radial piston engine
National origin United States
Manufacturer Wright Aeronautical Corporation
Major applications Various light aircraft
Produced 1929-1937
Number built around 500

The Wright R-540 Whirlwind was a series of five-cylinder air-cooled radial aircraft engines built by the Wright Aeronautical division of Curtiss-Wright. These engines had a displacement of 540 in³ (8.85 L) and power ratings of around 165-175 hp (123-130 kW). They were the smallest members of the Wright Whirlwind engine family.