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General Electric CF34
The General Electric CF34 is a civilian turbofan developed by GE Aircraft Engines from its TF34 military engine. With more than 5,600 engines in service (as of 2012), the CF34 is used on a number of jet airliners, including the Bombardier CRJ series, the Embraer E-Jets, and the Chinese ARJ21 under development.〔(The CF34 ) at aviationpros.com〕〔(GE's CF34-3 Engines Celebrate 20 Years of Regional Jet Service ) at aviationpros.com〕
==Design and development==
The original engines comprise a single stage fan, driven by a 4-stage low pressure (LP) turbine, supercharging a 14-stage HP compressor, driven by a 2-stage high pressure (HP) turbine, with an annular combustor. Later higher thrust versions of the CF34 feature an advanced technology core, with only 10 HP compressor stages. Latest variants, the and , were derived from the CFM56 engine family, and have a radically different HP spool, comprising a 9-stage compressor driven by a single stage turbine. The LP spool has 3 core booster stages behind the fan. Static thrust is for the variant.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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