The LM2500+G4 Engine
Photo courtesy of the Italian Navy
LM2500+G4 is the fourth generation of the industry-leading LM2500. Main features are increased power (17%) compared to the third generation LM2500+, and the same high reliability, availability and the same high efficiency (lower SFC).
The LM2500+G4 system's modular design provides for easy and timely repair and refurbishment, with its split compressor casing, in-place blade and vane replacement, in-place hot-section maintenance and external fuel nozzles. The LM2500+G4 is ideal for the Italian, French and Moroccan FREMM frigates and other military ships, and is available as a generator set.
The LM2500+G4 gas turbine provides 47,370-shp, and is the most powerful and efficient member of the LM2500 family.
|Output||47,370 shp (35,320 kW)|
|SFC||.352 lb/shp-hr (214 g/kW-hr)|
|Heat rate||6,469 Btu/shp-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