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