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Pratt & Whitney R-1535

From PlaneSpottingWorld, for aviation fans everywhere

The Pratt & Whitney R-1535 Twin Wasp Junior was an engine used in American aircraft in the 1930s. The engine was first introduced in 1932. It was a two-row, 14-cylinder air-cooled radial design. Displacement was 1,535 cubic inches (25.2 liters); bore and stroke were 5-3/16" and 5-3/16" (131.8 mm and 131.8 mm).


  • R-1535: 700 hp (521 kW)
  • R-1535-13: 825 hp (615 kW)

Specifications (R-1535-13)


Aircraft which used R-1535

Related contents

External links


This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "Pratt & Whitney R-1535".