The Pratt & Whitney R-985 Wasp Junior is a series of nine-cylinder, air-cooled radial piston engines that Pratt & Whitney built from the 1930s into the 1950s as a smaller companion to its R-1340 Wasp. With a displacement of 985 cubic inches, about 16 litres, it shared many parts and the same mounting dimensions as the larger Wasp, so an aircraft could take either engine. First run in 1929, with sales starting in 1930, it grew from 300 horsepower in the first Wasp Junior A to 450 horsepower in the most widely used models, and a gear-driven supercharger fed its cylinders. It powered small transports, utility aircraft, trainers, agricultural aircraft and helicopters, and more than 39,000 were built, many of them still in service today.
Facts
Displacement or Thrust985 cubic inches (16 litres) displacement 1 Cylinder Count Classification
Configuration Connections
Exemplifies
Source Pratt & Whitney R-985 Wasp Junior (Wikipedia)
Of Make
Source Pratt & Whitney R-985 Wasp Junior (Wikipedia)
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Manufactured By
Also in Business Atlas: the manufacturer of this subject.
Source Pratt & Whitney R-985 Wasp Junior (Wikipedia)Lead, manufacturerQuote, Lead, manufacturer
built by the Pratt & Whitney Aircraft Company from the 1930s to the 1950s
Sources
1. Pratt & Whitney R-985 Wasp Junior (Wikipedia)
Design and development, first run
The first run of the Wasp Junior was in 1929, and sales began in 1930.
Lead
The Pratt & Whitney R-985 Wasp Junior is a series of nine-cylinder, air-cooled, radial aircraft engines
Lead, displacement
These engines have a displacement of 985 in3 (16 L)
Lead, manufacturer
built by the Pratt & Whitney Aircraft Company from the 1930s to the 1950s
Part Of: Beechcraft Model 18, Operational history
It was selected for the Lockheed Model 10A Electra twin-engined airliner, as well as for other small twin-engined civil transports like the Lockheed Model 12A Electra Junior, the Beechcraft Model 18, and the Grumman Goose amphibious aircraft.
Part Of: Grumman G-21 Goose, Operational history
It was selected for the Lockheed Model 10A Electra twin-engined airliner, as well as for other small twin-engined civil transports like the Lockheed Model 12A Electra Junior, the Beechcraft Model 18, and the Grumman Goose amphibious aircraft.
Part Of: Beechcraft Model 17 Staggerwing, Operational history
It was also used in single-engined civilian utility aircraft like the Beechcraft Staggerwing, the Howard DGA-15, and the Spartan Executive.
Part Of: Avro Anson, Operational history
The Wasp Junior also powered some versions of the British Avro Anson and Airspeed Oxford twin-engined trainers.
Part Of: De Havilland Canada DHC-2 Beaver, Operational history
New designs based on the Wasp Junior were also introduced, such as the Sikorsky H-5 helicopter, the de Havilland Canada DHC-2 Beaver, and Max Holste Broussard bush airplanes
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