Object Details
Designer
Dr. S. G. Hooker
Manufacturer
Rolls-Royce Ltd. (Derby, U.K.)
Physical Description
Type: Turbofan, 3-shaft
Thrust : 187,000 N (42,000 lb)
Compressor: Single-stage fan, 7-stage intermediate pressure, 6-stage high pressure
Combustor: Annular chamber
Turbine: Single-stage axial high pressure, single-stage intermediate pressure, 3-stage low pressure
Weight: 3,267 kg (7,203 lb)
Summary
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.
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).
This RB211-22 engine powered the Lockheed L-1011 TriStar. It has been cutaway to show the relationship of the internal parts.
Credit Line
Gift of Rolls-Royce LtdNational Air and Space Museum, Smithsonian Institution
Date
1973
Inventory Number
A19820072000
Restrictions & Rights
CC0
Type
PROPULSION-Turbines (Jet)
Materials
Metal
Dimensions
3-D: 303.3 × 217.2cm, 4170.8kg (119 7/16 × 85 1/2 in., 9194 15/16lb.)
Support: 285.8 × 156.2 × 243.8cm (112 1/2 in. × 61 1/2 in. × 96 in.)
Country of Origin
United Kingdom
See more items in
National Air and Space Museum Collection
Location
National Air and Space Museum in Washington, DC
Exhibition
America by Air
Data Source
National Air and Space Museum
Link to Original Record
Record ID
nasm_A19820072000
