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General Electric TF34/CF34
From Wikipedia, the free encyclopedia
The General Electric TF34 is a military turbofan engine used on the A-10 Thunderbolt and S-3 Viking. Developed by GE Aircraft Engines during the late 1960s, the original engine comprises a single stage fan, driven by a 4-stage LP turbine, supercharging a 14-stage HP compressor, driven by a 2-stage HP turbine. An annular combustor is featured. The TF34-GE-400A is rated at 41.26KN (9275lbf) static thrust.
The civilian variant, the CF34, is used on a number of jet airliners, including the Bombardier CRJ series, the 'E-Jets' from Embraer and the Chinese ARJ21 under development. Originally based on the TF34, later higher thrust versions of the CF34 feature an advanced technology core, with only 10 HP compressor stages. Latest variants, the -10A and -10E, 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 18500lbf (i.e. -10E)
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