General_Electric_F118 Knowpia

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 edit

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.^[1]

Variants edit

F118-GE-100: Variant for the B-2^[2]
F118-GE-101: Variant for the U-2S^[2]

Applications edit

Specifications (F118-100) edit

Data from ^[3]

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

References edit

Notes edit

^ Donald, David, ed. "U-2, The Second Generation". Black Jets. AIRtime, 2003. ISBN 1-880588-67-6.
^ ^a ^b Taylor 1996, p 594
^ Gas Turbine Engines. Aviation Week & Space Technology Source Book 2009. p. 118.