Pratt & Whitney R-985 "Wasp Junior" Radial Engine

            Pima Air and Space Museum

Pratt & Whitney R-985 "Wasp Junior" 
Pratt and Whitney's Wasp Junior provided the company with a 9-cylinder radial model in the 300 to 400 horsepower class, suitable for civilian aircraft and light military planes. In fact, the Wasp Junior was used in some notable planes of the 1930s and 1940s. The Vought 082U-1 Kingfisher, Lockheed L-10A Electra, and the Beech UC-43 Traveler all utilized the Wasp Junior. 

The Wasp Junior, however, found a more notable home in the racers of the 1930s. The first Thompson Trophy Race, in 1929, was won by the Wasp Junior-powered Laird Solution. Nearly 40 percent of the $200,000 in prize money offered in the Bendix and Thompson Trophy Races during the decade was won by Wasp Junior-powered aircraft. 

The engine remained popular as a power plant in both airplanes and helicopters into the 1950s when production finally came to an end. 

Technical Specifications 
Model: R-985 
Developed: 1933 
Design: 9-cylinder radial engine 
Rated Output: 450 horsepower 
   

Some rights reserved

Taken in: United States / Arizona / Littletown (show map)

Taken on: January 7, 2021

Tags:

Pratt & Whitney

R-985

L-10A

UC-43

082U-1

082U-1 Kingfisher

L-10 Electra

UC-43 Traveler « less

Sets appears in: • Pima Air and Space Museum - Hangar 1

Camera: Canon PowerShot G16, f/1.8, 1/20 sec, 6.1mm, ISO 400 (more info) (hide info)

Camera:	Canon PowerShot G16
Aperture:	f/1.8
Exposure Time:	0.05 sec (1/20)
Focal Length:	6.1mm
ISO:	400
Exposure Bias:	-1 EV
Flash:	Off, Did not fire
Exposure Mode:	Manual
Metering Mode:	Multi-segment
White Balance:	Auto
Color Space:	sRGB
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