Rolls-Royce WR-21

The Rolls-Royce WR-21 is an advanced marine gas turbine engine, designed with a view to powering the latest naval surface combatants of the partner nations, and currently fitted to the Type 45 destroyer of the Royal Navy.

Developed with government funding input from the UK, France and the United States, the WR-21 was designed and manufactured by an international consortium led by Northrop Grumman as prime contractor. The turbine itself was designed primarily by Rolls-Royce with significant marine engineering and test facility input from DCN, with Northrop Grumman responsible for the intercooler, the recuperator and system integration.

WR-21 development draws heavily on the technology of the successful Rolls-Royce RB211 and Trent families of gas turbines.

The original design and development of the WR-21 was carried out by Westinghouse Electric Corporation (later Northrop Grumman Marine Systems) under a U.S. Navy contract placed in December 1991. Later the Royal Navy and the French Navy became interested in the WR-21, leading to Rolls-Royce and DCN involvement.

The WR-21 is the propulsion system of Royal Navy Type 45 destroyers.

The WR-21 is the first aeroderivative gas turbine to incorporate Gas compressor intercooler and Exhaust heat recovery system (ICR) technologies that deliver low specific fuel consumption across the engine's operating range. It offers a reduction in fuel burn of 30% across the typical ship operating profile.

...
Wikipedia