Italian Navy Application, Operation and Maintenance of Fiat - GE LM2500 Gas Turbine Propulsion Systems FREE

[+] Author Affiliations
Massimo Maggini

Italian Navy General Staff, S.P.M.M. (Studies, Projects, Means and Material) Directorate, Rome, Italy

Roberto Tonelli

Directorate of Naval Construction and Naval Ordnance, Rome, Italy

Paper No. 98-GT-135, pp. V002T03A003; 7 pages
  • ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery
  • Stockholm, Sweden, June 2–5, 1998
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7863-7
  • Copyright © 1998 by ASME


The LM2500 gas turbine has been used in Italian Navy (ITN) ships for more than twenty years, as the first engines were installed on board the “Lupo” class Frigates during the second half of the 1970s.

The LM2500 during its service has proven to be reliable in both the “Combined Diesel or Gas” (CODOG) and the “Combined Gas and Gas” (COGAG) propulsion plant, with Controllable Pitch Propeller (CPP) and Fixed Pitch Propeller (FPP) as the ITN marine operational experience demonstrates. The last application was in the DURAND DE LA PENNE Class DDG with a CODOG arrangement and two shaft lines with Feathered Controllable Pitch Propellers (FCPP), produced by FINCANTIERI shipyard, which may range from a forward to an astern direction till the blades reach a flag position. This type of propeller allows a considerable drop in the absorbed power and therefore in fuel consumption and noise when using a single shaft.

Based on the ITN experience with the DDG class, the use of FCPP achieves remarkable fuel savings with the gas turbine since, due to the high specific consumption of the engine at low speeds, it is cheaper to have a single shaft running.

The maintenance approach to the engines installed on board ITN ships, based on the “on condition” concept, has been developed by the ITN and Fiat Avio to maximise the availability of the vessels. This covers both on-board corrective maintenance (inspection, special maintenance and / or introduction of improvements) and the substitution maintenance, with successive overhaul and application of decided updating of gas generators and power turbines.

Copyright © 1998 by ASME
This article is only available in the PDF format.



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In