tHE standard LM2500 gas turbine
GE, Bath Iron Works and United States Navy Introduce LM2500 Gas Turbine Module Modernization Program to Lower Life Cycle Costs; Reduce Enclosure Weight by 50%
EVENDALE, OHIO (August 3, 2016) –GE’s Marine Solutions announced that the LM2500 gas turbine Module Modernization Program (MMP) is now underway with General Dynamics Bath Iron Works and the United States Navy. The MMP will inject updated technology into the gas turbine module system and reduce enclosure weight by approximately 50%*.
GE continually invests in its LM2500 family of marine gas turbines. “For the MMP, the infusion of new technologies will improve the manufacturing and maintainability of the LM2500 marine module, all the while reducing module weight, noise, radiated heat – and most importantly – life cycle costs,” said GE’s Brien Bolsinger, Vice President, General Manager, Evendale, Ohio. “The new marine module will meet global naval requirements, including Mil 901D shock. Once available in 2018, this lightweight design can easily be applied to LM2500 family gas turbines used by other international navies,” he added.
An artist rendering of the improved LM2500 composite enclosure
The U.S. Navy is GE’s largest marine gas turbine customer with over 350 LM2500 engines in operation across multiple programs including DDG-51 ARLEIGH BURKE, LCS-2 INDEPENDENCE and LHA-6 AMERICA class ships. Products developed under the MMP will be introduced to the U.S. Navy’s DDG-51 program starting with Flight III.
The MMP focuses on composite initiatives including the enclosure, inlet barrier wall and inlet screen. The MMP also targets gas turbine and package sensors to improve condition monitoring and manufacturability. For instance, all bolted joints between the walls and roof panels will be eliminated in the composite enclosure to improve noise attenuation and simplify assembly. The composite enclosure will feature improved entry points via the addition of an access panel to the inlet plenum, enlarged rear access panels and improved top access hatch design (see diagram below). These enhancements will significantly reduce the weight of the door and the hatch and will improve ingress/egress, especially in the nose-down orientation on board ship.
* Excludes base structure
Other key composite improvements include:
- Reduced enclosure weight by approximately 50%
- Improved noise attenuation
- Significant reduction in radiated heat; all external surface temperatures are expected to be less than 110°F
Detailed design for MMP products is ongoing, with extensive fire testing on subcomponents planned for 2016. The prototype enclosure is expected to be complete in April 2017, and full scale fire, shock, noise and vibration testing is planned to be completed mid-2018. The new composite enclosure will be available by the fourth quarter 2018.
GE’s marine gas turbine business is part of GE Aviation and is headquartered in Cincinnati, Ohio. GE is one of the world’s leading manufacturers of marine propulsion products, systems and solutions, including aeroderivative gas turbines ranging from 6,000 to 70,275 shaft horsepower/4.5 to 52 megawatts. These gas turbines reliably operate the world over in some of the most arduous conditions in temperatures ranging from -40 to 120oF/-40 to 48oC. For more information, visit ge.com/marine.
