Wright Turbo-Cyclone 18R-3350-TC (972TC18DA2), 2-Row, Radial Engine

This engine powered the last generation of piston engine transports, including the Douglas DC-7 and Lockheed Super Constellation. It represents the end of engine-development that began with the famous Wright Whirlwind, and included an entire family of military and commercial piston power plants. The somewhat unique feature of this engine was a turbo compound device, consisting of an exhaust-driven turbine geared to the crankshaft, generating 20 percent additional take-off power without increasing fuel consumption.

The Wright R-3350 Turbo-Cyclone 18 also powered the following aircraft types: Lockheed P2V-7 Neptune patrol bomber, Martin P5M-1 and -2 Marlin patrol flying boat, Fairchild C-119F and G Packet troop and cargo transport, Lockheed C-121 transport, and Canadair CL-28 maritime reconnaissance.

This artifact, a Model 972TC18DA2, powered the American Airlines Douglas DC-7C "Flagship Vermont." A total of 374 engines of this model were built between August 1952 and December 1954. A total of 5,656 commercial C18 and 44,536 military R-3350 engines were manufactured.

Gift of American Airlines, Inc.

Physical Description:
Weight: 1621 kg (3573 lb)

Country of Origin
United States of America

Manufacturer
Wright Aeronautical

Date
1952

Location
National Air and Space Museum, Washington, DC
Exhibition
Gallery 102 - America by Air

Type
PROPULSION-Reciprocating & Rotary

Materials
Engine Overall - Steel, Aluminum, Inconel X
Dimensions
Diameter: 143.8 cm (56.6 in.), Length: 233.2 cm (91.8 in.)

This engine powered the last generation of piston engine transports, including the Douglas DC-7 and Lockheed Super Constellation. It represents the end of engine-development that began with the famous Wright Whirlwind, and included an entire family of military and commercial piston power plants. The somewhat unique feature of this engine was a turbo compound device, consisting of an exhaust-driven turbine geared to the crankshaft, generating 20 percent additional take-off power without increasing fuel consumption.

The Wright R-3350 Turbo-Cyclone 18 also powered the following aircraft types: Lockheed P2V-7 Neptune patrol bomber, Martin P5M-1 and -2 Marlin patrol flying boat, Fairchild C-119F and G Packet troop and cargo transport, Lockheed C-121 transport, and Canadair CL-28 maritime reconnaissance.

This artifact, a Model 972TC18DA2, powered the American Airlines Douglas DC-7C "Flagship Vermont." A total of 374 engines of this model were built between August 1952 and December 1954. A total of 5,656 commercial C18 and 44,536 military R-3350 engines were manufactured.

Gift of American Airlines, Inc.

Physical Description:
Weight: 1621 kg (3573 lb)

Country of Origin
United States of America

Manufacturer
Wright Aeronautical

Date
1952

Location
National Air and Space Museum, Washington, DC
Exhibition
Gallery 102 - America by Air

Type
PROPULSION-Reciprocating & Rotary

Materials
Engine Overall - Steel, Aluminum, Inconel X
Dimensions
Diameter: 143.8 cm (56.6 in.), Length: 233.2 cm (91.8 in.)

ID: A19660150000