1940s
World War II shifted focus to aero engines at the Derby Works
and a new factory in Crewe, commissioned by the Air Ministry, which
became the home of Rolls-Royce in 1946. The war changed the
perception of Rolls-Royce from a "brilliant sprat in the ocean of
technology" into a world contender in aero propulsion. This was
demonstrated with the Gloster Meteor which, powered by Rolls-Royce
Derwent V engines, established a new world air speed record of 606
mph.