The Pratt & Whitney XH-3130 (sometimes called the XL-3130) was an H-block aircraft engine project developed for the United States Navy in the late 1930s. The design was later enlarged as the XH-3730), but the project was canceled in 1940 in favor of Pratt & Whitney developing the R-4360 Wasp Major air-cooled radial engine.
The Pratt & Whitney XH-3130 (sometimes called the XL-3130) was an H-block aircraft engine project developed for the United States Navy in the late 1930s. The design was later enlarged as the XH-3730), but the project was canceled in 1940 in favor of Pratt & Whitney developing the R-4360 Wasp Major air-cooled radial engine.
Source: Wikipedia "Pratt & Whitney XH-3130" · CC BY-SA 4.0
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