Engineering:General Electric F118

Short description: 1980s American turbofan engine

F118
An F118 engine
Type	Turbofan
National origin	United States
Manufacturer	General Electric
First run	1980s
Major applications	Lockheed U-2 Northrop Grumman B-2 Spirit
Developed from	General Electric F110

The General Electric F118 is a non-afterburning turbofan engine produced by GE Aviation, and is derived from the General Electric F110 afterburning turbofan.

Design and development

The F118 is a non-afterburning derivative of the F110 specially developed for the B-2 Spirit stealth bomber. A single stage HP turbine drives the 9 stage HP compressor, while a 2-stage LP turbine drives the 3 stage fan. The combustor is annular. In 1998, the USAF's Lockheed U-2S fleet was fitted with a modified version of the F118.

Variants

F118-GE-100

Variant for the B-2

F118-GE-101

Variant for the U-2S

Applications

• Lockheed U-2S
• Northrop Grumman B-2 Spirit

Specifications (F118-100)

Data from

General characteristics

• Type: Two Spool turbofan
• Length: 101 in (260 cm)
• Diameter: 46.5 in (118 cm)
• Dry weight: 3,200 lb (1,500 kg)

Components

• Compressor: Axial, 1 stage fan, 2 stage LP compressor, 9 stage HP compressor
• Combustors: Annular
• Turbine: 1 stage HP turbine, 2 stage LP turbine

Performance

• Maximum thrust: 19,000 lbf (85 kN)
• Overall pressure ratio: 35:1
• Thrust-to-weight ratio: 5.9:1

See also

Related development

• General Electric F101
• General Electric F110

Related lists

• List of aircraft engines

References

Bibliography

• Taylor, Michael J. H. (1996). Brassey's World Aircraft & Systems Directory. London, England: Brassey's. ISBN 1-85753-198-1. https://archive.org/details/brasseysworldair0000unse. 

External links

• GE Aviation Military Engines page