Add Yahoo as a preferred source to see more of our stories on Google. GettyImages 528673160 Michael Cole Corbis via Getty Images 2 Powerful and dependable, the Rolls-Royce Merlin aero engine was ...

Powerful and dependable, the Rolls-Royce Merlin aero engine was fitted to many of the most significant warplanes of the Second World War—from the Spitfire and Hurricane to the Lancaster. The engine’s ...