15 gas engines to power five new ferries

Connecting the dots

The MT30 has delivered unprecedented levels of power density by reducing the size of the enclosure (the footprint) and increasing the power output available.

This is enabling hybrid electro-mechanical propulsion using a single gas turbine to become feasible for smaller (frigate-sized) naval platforms for the first time.  

The MT30 in a compact package is disrupting and redefining the market for combat ships by creating opportunities for naval architects and system designers to do things differently.  Single gas turbine and hybrid electro mechanical propulsion is a game changer in terms of anti-submarine warfare.

MT30 marine gas turbine 

“Innovation at Rolls-Royce means connecting products and technologies to emerging customer problems in what is currently a very dynamic market  in order to provide enhanced operational capability at reduced cost,” 

Richard Partridge
Chief Engineer Naval Systems & Ship Design 

Tangible benefits

Use of the company’s controllable pitch propeller, designed and developed in Sweden at the company’s world leading Hydrodynamic Research Centre in Kristinehamn has also met the customer’s onerous and conflicting requirements for efficiency and underwater radiated noise.

But there is a further benefit to the MT30 Compact Package. It makes possible the choice of a simpler more cost effective Combined Diesel Electric and Gas (CODLOG) system. This in turn often allows the choice of a Low rather than High voltage electrical distribution system which is cheaper in terms of initial cost.

Crucially, the ‘Or’ system (CODLOG) can achieve top ship speed using only the GT, avoiding key dependencies on other system elements, and releasing 100% of the installed electrical power generating capacity to support ship service and weapons load demand, making the platform more adaptable in terms of its ability to accept incremental advanced weapons and sensors as they become available in future years. 

That makes the MT30 Compact Package a “win-win,” according to Partridge “providing tangible benefits to a programme in terms of both the ship design and attendant capex and lifecycle costs and enhanced operational capability.

Orders for the MT30 Compact Package have been secured for both the UK Royal Navy’s Type 26 Global Combat Ship programme and the Italian Navy’s LHD. The MT30 Compact Package is also under consideration for many other programmes across the world including Canada, Japan, Finland and Australia. 

MT7 marine gas turbine

The MT30 is not the only example of an innovative marinised naval gas turbine. 

The MT7, which will be used on the US Navy’s ship to shore connector (SSC) has over 90% commonality with the successful AE1107 engine, which powers the US Marine Corps’ V-22 Osprey tilt-rotor aircraft.

US Navy ships that carry the SSC hovercraft will also deploy V-22 Ospreys and having a common engine type will bring significant in-service benefits. Spares holdings can be rationalised and maintenance training for those on board is simplified.  

The MT7 will power the US Navy’s ship to shore connector (SSC)

The MT7 will power the US Navy’s ship to shore connector (SSC).

Integrated electric propulsion

The AG9160 built in Rolls-Royce’s Indianapolis plant will enhance the operational capability of the US Navy’s DDG51 Flight Three Class.   The AG9160 gas turbine genset will provide 4MW at High Voltage powering the electrical demand for the vessels’ advanced weapons and sensors.

Rolls-Royce has successfully provided navalised gas turbine gensets for many years into the US Navy surface fleet using the AG9140 genset, and more recently GT gensets for full/integrated electric propulsion to the US Navy’s DDG1000 Destroyer program as well as the Royal Navy’s Type 45 Destroyer and Queen Elizabeth Class Aircraft Carriers, establishing the company as a world leader in the provision of navalised gas turbine generator sets.

Integrated electric propulsion allows naval programmes to effectively “future-proof” new platforms by allowing the potential retrofitting of the sorts of power hungry advanced weapons and sensor systems it sees navies installing over the coming 15 years. 

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