Early in 1942, the British tested four RAF Mustangs fitted with the two-stage, two-speed Merlin 65 engine. The supercharger in the Merlin 65 was optimized to produce sea-level horsepower up to approximately 9,150 m (30,000 ft). Urged on by Rolls Royce and British and American fighter pilots who sampled the new Mustang, North American obtained two Merlin 61 engines similar to the 65 and installed t
- Készítette North American Aviation Inc.
- Köszönet: Transferred from the U.S. Air Force
- Jogok: CC0
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