Rolls-Royce RB211-22 Turbofan Engine, Cutaway
date: label: Date
content: 1973
name: label: Designer
content: Dr. S. G. Hooker
label: Manufacturer
content: Rolls-Royce Ltd. (Derby, U.K.)
notes: label: Physical Description
content: Type: Turbofan, 3-shaft
label: Physical Description
content: Thrust : 187,000 N (42,000 lb)
label: Physical Description
content: Compressor: Single-stage fan, 7-stage intermediate pressure, 6-stage high pressure
label: Physical Description
content: Combustor: Annular chamber
label: Physical Description
content: Turbine: Single-stage axial high pressure, single-stage intermediate pressure, 3-stage low pressure
label: Physical Description
content: Weight: 3,267 kg (7,203 lb)
label: Summary
content: This is the first foreign-made engine chosen as the basic power plant for a major U.S.-built airliner, the Lockheed L-1011 TriStar, receiving its certification from the Federal Aviation Administration in 1973 for use on that three engine aircraft. In addition, it powered some models of the Boeing 747 transport.
label: Summary
content: The RB211 differed from other engines in its class in having three instead of two shafts. Each shaft has a compressor on its forward end and a turbine on its aft end. This design permitted each compressor to run nearer its optimum speed and efficiency and reduced the number of blades and other parts required in the engine. The static thrust varied from 160 KN (36,000 pounds) to 245 KN (55,000 pounds).
label: Summary
content: This RB211-22 engine powered the Lockheed L-1011 TriStar. It has been cutaway to show the relationship of the internal parts.
place: label: Country of Origin
content: United Kingdom
setName: label: See more items in
content: National Air and Space Museum Collection
label: Location
content: National Air and Space Museum in Washington, DC
label: Exhibition
content: America by Air
creditLine: label: Credit Line
content: Gift of Rolls-Royce LtdNational Air and Space Museum, Smithsonian Institution.
dataSource: label: Data Source
content: National Air and Space Museum
identifier: label: Inventory Number
content: A19820072000
objectType: label: Type
content: PROPULSION-Turbines (Jet)
objectRights: label: Restrictions & Rights
content: CC0
physicalDescription: label: Materials
content: Metal
label: Dimensions
content: 3-D: 303.3 × 217.2cm, 4170.8kg (119 7/16 × 85 1/2 in., 9194 15/16lb.)
label: Dimensions
content: Support: 285.8 × 156.2 × 243.8cm (112 1/2 in. × 61 1/2 in. × 96 in.)