Rolls-Royce RB211-22 Turbofan Engine, Cutaway


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item 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.

Collection Item Long Description:



Inventory Number


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)

Credit Line

Gift of Rolls-Royce LtdNational Air and Space Museum, Smithsonian Institution.


Dr. S. G. Hooker

Country of Origin

United Kingdom




  • 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.)

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


PROPULSION-Turbines (Jet)