Rolls-Royce Merlin exhaust flow and waste-gates, meant that this option was rejected in favour of the two-stage supercharger. Fitted with the two-stage two-speed supercharger, the Merlin 60 series gained 300 horsepower (224 kW) at over the Merlin 45 series, at which altitude a Spitfire IX was nearly faster than a Spitfire V. The two-stage Merlin family was extended in 1943 with the Merlin 66 which had its supercharger geared for increased power ratings at low altitudes, and the Merlin 70 series that were designed to deliver increased power at high altitudes. While the design of the two-stage supercharger forged ahead, Rolls-Royce also
Rolls-Royce Deutschland Rolls-Royce Deutschland Rolls-Royce Deutschland is a subsidiary of aircraft engine maker Rolls-Royce plc with facilities at Dahlewitz outside Berlin and Motorenfabrik Oberursel at Oberursel near Frankfurt am Main. It was formerly BMW Rolls-Royce (BRR), a joint venture company between BMW and Rolls-Royce established in 1990 to produce the BR700 family of jet engines. Rolls-Royce took full control of the company in 2000, renaming it Rolls-Royce Deutschland. As well as continuing to produce the Rolls-Royce BR700 family of turbofans, the subsidiary is also involved in the Europrop TP400 engine for the Airbus A400M military transport plane. Rolls-Royce Deutschland has inherited responsibility