The Rolls-Royce Merlin was the pinnacle of piston engine design in the 1940s.
This particular engine was used in Fairey Fulmar I, Serial No N1926, during the days of the Battle of Britain in 1940.
The Merlin owes its design to the Kestrel engine which was in production from 1927, and yet the technology still holds its own in the 21st Century, such is the pace of progress made during wartime.
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