A Bristol Hercules engine undergoing inspection before going to the test bench for preliminery running trials. The 14-cylinder two-row radial aircraft engine designed by Sir Roy Fedden and produced by the Bristol Engine Company starting in 1939. It was the first of their single sleeve valve (Burt-McCollum, or Argyll, type) designs to see widespread use, powering many aircraft in the mid-World War II timeframe.

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Size: 4310px × 3023px
Location: United Kingdom
Photo credit: © De Luan / Alamy / Afripics
License: Licensed
Model Released: No

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