| 31. | Work expanded into the aviation industry and Gnome and Le Rhone aero engines were made.
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| 32. | There was also a serious shortage of advanced aero engines in Germany during the late 1930s.
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| 33. | Over the next decade, Hirth became one of Germany's leading aero engine manufacturers.
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| 34. | "' MTU Aero Engines AG "'is a German aircraft engine manufacturer.
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| 35. | Chassis production was suspended in 1917 to enable Rolls-Royce to concentrate on aero engines.
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| 36. | The firm also built aero engines.
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| 37. | "' Lawrance Aero Engine Company "'was an American aircraft engine manufacturer.
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| 38. | Today, Rolls-Royce aero engines are in operation or on order with 10 Chinese operators.
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| 39. | MTU Aero Engines is a major partner of the programme, with 22.5 % share.
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| 40. | Lombard went on to become the Chief Engineer of the Aero Engine Division of Rolls-Royce.
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