General Electric J85

J85
A General Electric J85-5
TypeTurbojet
National originUnited States
ManufacturerGeneral Electric
First run1950s
Major applicationsCessna A-37 Dragonfly
Canadair CT-114 Tutor
Northrop F-5
Northrop T-38 Talon
Developed intoGeneral Electric CF700
VariantsGeneral Electric CJ610

The General Electric J85 is a small single-shaft turbojet engine. Military versions produce up to 3,500 lbf (16 kN) of thrust dry; afterburning variants can reach up to 5,000 lbf (22 kN). The engine, depending upon additional equipment and specific model, weighs from 300 to 500 pounds (140 to 230 kg). It is one of GE's most successful and longest in service military jet engines, with the civilian versions having logged over 16.5 million hours of operation. The United States Air Force plans to continue using the J85 in aircraft through 2040. Civilian models, known as the CJ610, are similar but supplied without an afterburner and are identical to non-afterburning J85 variants, while the CF700 adds a rear-mounted fan for improved fuel economy.