General Electric T700

The General Electric T700 and CT7 are a family of turboshaft and turboprop engines in the 1,500 to 3,000 shaft horsepower class. The line began in 1967 as the GE12 demonstrator, built for United States Army interest in a next-generation utility helicopter, and the T700 was bench tested in 1973, passed military qualification in 1976 and went into production in 1978. The first T700-GE-700 is an ungeared free-turbine turboshaft with a mixed-flow compressor, an annular combustor and an inlet particle separator that spins out dirt, sand and dust. Military versions power the UH-60 Black Hawk and AH-64 Apache and have marinized naval variants for the SH-60 Seahawk, while the commercial CT7 turboshaft serves helicopters such as the Sikorsky S-92 and the CT7 turboprop powers the Saab 340 and other twin-turboprop aircraft.