LM2500

About 1,000 engines installed on ships and military and civilian industrial applications.
More than 100 produced and sold by Avio. (≈ 10% of the market).
Under the contract signed in 1968, Avio sells under license from the General Electric LM2500 gas turbine in a ship propeller version, acting as MSS (Marine System Supplier) to GE. Avio is involved both on the design and production of components exclusive for the naval version of the engine. Since signing the contract to today, Avio has produced over 1,200 kits of parts, relative to its own direct responsibility, and has delivered 88 engines for 29 naval vessels, for Italian, French, Polish, Venezuelan and Peruvian Navies. Avio provides final assembly of LM modules propulsion together with the base, to media, joints and flexible pipes, the pipes and to the housing. Also on the basis of the request of the Customer Avio has the ability to design and produce the base of support (Base) and housing (Enclosure) for all models belonging to the LM family.
Recently, Avio had a Base / Enclosure (TG module) lighter and more modern also to be used in military applications for the Polish Corvette P621.

Module and auxiliary gas turbine
To use the engine, the gas turbine is installed in an appropriate housing, with specific auxiliary components.
The main purpose is the provision of fluids needed for the operation conditions of temperature, flow and pressure required by gas turbine.
The secondary purpose is the provision of interfaces with the structure of the vessel, ensuring the observance of environmental requirements in terms of noise, heat dissipation and protection of persons. The design philosophy of Avio, which is based on efficiency of costs and containment of weight, robustness, easily maintenance and installation, led to the development of dedicated equipment mounted on ‘skid’ for the auxiliary module and the optimized version GT, including gas turbine, the supports, pipes and cables.
Have been developed and are constantly upgraded, two dedicated versions, one for commercial applications and one for military applications.
The unique characteristics of military version are:

  • Ability to shock resistance in accordance with MIL STD 901D.
  • Vibration and noise reduced according to MIL STD 167-1 and MIL STD 740-B.
  • Redundancy optimized.

One of the main auxiliary systems is the "Governor" better known as electronic control system of the turbine, which is entirely designed and manufactured by Avio and certified by General Electric.

Technical information:
Derivation: TF39/CF6-6 aircraft engine

Performance in the conditions laid down by ISO (15 ° C, sea level, UR 60%, diesel with PCI 18,400 BTU / lb - no loss of suction or exhaust):

Power output shaft: [kW] 25.000
Specific fuel consumption: [g/kWh] 227
Flow in entry: [kg/sec] 70.1
Exhaust gas temperature: [C°] 566
Gas Generator [rpm] 10,500
Power Turbine [rpm] 3,600

 

 

 

 


 
APPLICATIONS
 
Andrea Doria
Caio Duilio
Cavour Aircraft carrier (Italian Navy)
Chevalier Paul
Gawron
Horizon Class Frigate (Italian and French Navy)