GE Turbines Offer Hybrid Solutions

By Keith Henderson at May 10, 2012 07:36
Filed Under: Company News, Navy News
GE is offering hybrid propulsion systems for military and commercial applications based on its LM series gas turbines using electric motors and drives, to reduce noise and emissions through improved fuel economy. GE has a wide experience of hybrid systems, acting as systems integrator, GE is able to team with other industry suppliers to provide all electric propulsion solutions. A particularly successful combination with gas turbines is the CODAG or CODOG arrangement where diesel engines are employed at low output with the gas turbine(s) only used to produce boost power. As the cost of fuel increases, such solutions are not limited to newbuilds, repowering of existing vessels can also provide tangible financial benefits. In the future wider use of fuel cells can replace diesel engines to provide further reductions in exhaust, noise and vibration emissions. [More]

New Helicopter Carrier for Japanese Navy

By Keith Henderson at October 11, 2011 07:35
Filed Under: Navy News
Details of the propulsion system for the new 22DDH Helicopter Carrier of the Japanese Navy / Maritime Self-Defence Force (JMSDF) have been announced. To be built by IHI of Tokyo, the LOA 814 ft (248 m) and beam of 124 ft (38 m) vessel will have a fully loaded displacement of around 27,500 tons. The propulsion system comprises four GE LM2500 gas turbines giving a total power of around 135,000 hp (100 MW) in a COGAG arrangement giving a speed of 30 kt. The ships will also be using GE’s smaller turbine, the LM500 with an output of approximately 6,000 hp (4.5MW) in a turbo-electric configuration for on board power generation. [More]

The MAC - Maricuda Atlantic Challenger

By Keith Henderson at March 17, 2011 08:54
Filed Under:
A new challenger for the fastest Atlantic crossing is being promoted by Maricuda Marine Technology of the UK. It is the brainchild of naval architect and Managing Director of Maricuda, David Aitken. The concept is a 67 m (220ft) wave piercing trimaran powered by twin GE LM2500 series gas turbines driving Wartsila waterjets via Renk reduction gearboxes. The unusual appearance of the MAC has already earned it the name ‘Concorde of the Seas’, she has a maximum speed of around 70 knots allowing the transatlantic crossing to be made in under two days. To avoid the danger of collision traveling at this high speed, a French system, Automatic Sea Vision, using ocean scanning technology keeps an electronic lookout that will track up to 200 targets simultaneously. Maricuda see commercial opportunities for the design utilising the features of high-speed, safe, long-distance travel in all weather conditions. [More]

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