Pratt & Whitney R-1535 Twin Wasp Junior
The Pratt & Whitney R-1535 Twin Wasp Junior is an American aircraft engine developed in the 1930s. The engine was introduced in 1932 as a 14-cylinder version of the 9-cylinder R-985, and was a two-row, air-cooled radial design. Displacement was ; bore and stroke were both.
Variants
R-1535-11 - R-1535-13 -, R-1535-44 - R-1535-72 - R-1535-94 - R-1535-96 - R-1535-98 - R-1535-SB4-G -Engines on display
- There is a R-1535-96 on display at the New England Air Museum, Bradley International Airport, Windsor Locks, CT.
- There is an R-1535 on display at the San Diego Air and Space Museum. It is now being installed in the museum's Hughes H-1 Racer reproduction project.