PROPULSION

The LM2500+G4 Engine

Most power and efficient

Photo courtesy of the ITALIAN Navy

GE

The LM2500+G4 engine is the fourth generation of the industry-leading LM2500

It has all the same high reliability, availability and the same high efficiency (lower SFC) but with more power (a 17 percent increase) than the original LM2500. It is the most powerful and efficient member of the LM2500 family.

The LM2500+G4 system's modular design provides for easy and timely repair and refurbishment, with features like:

  • A split compressor casing
  • In-place blade and vane replacement
  • In-place hot section maintenance
  • External fuel nozzles

The LM2500+G4 is ideal for the Italian, French and Moroccan FREMM frigates and other military ships. It is also available as a generator set.

LM2500+G4

The LM2500+G4 gas turbine provides 47,370-shp, and is the most powerful and efficient member of the LM2500 family.

General Electric

Technical

Output
47,370 shp (35,320 kW)
SFC
.352 lb/shp-hr (214 g/kW-hr)
Heat rate
6,469 Btu/shp-hr
8,675 Btu/kWs-hr
9,150 kJ/kWs-hr
Exhaust gas flow
205 lb/sec (93 kg/sec)
Exhaust gas temperature
1,020°F (549°C)
Power turbine speed
3600 rpm
Average performance, 60 Hertz, 59°F, sea level, 60% relative humidity, no inlet/exhaust losses.