lycoming alf-502 turbofan engine
The Lycoming ALF 502 is a US designed high bypass turbofan engine with a geared fan, axial-centrifugal flow high pressure compressor, annular combuster and two stage high and low pressure power turbines.
The original ALF 502 engine, designated YF 102 was developed for the ill fated Northrop YF-9 prototype ground attack aircraft, and first ran and was certificated in 1980, and was firstly produced by Lycoming Engines, then Allied Signals and finally Honeywell Aerospace. The YF 102 powered the Quiet Short Haul research aircraft prototype and by then the ALF 502 was powering the Bombardier Challenger 600 series and the British Aerospace BA 146.
The original ALF 502 engine, designated YF 102 was developed for the ill fated Northrop YF-9 prototype ground attack aircraft, and first ran and was certificated in 1980, and was firstly produced by Lycoming Engines, then Allied Signals and finally Honeywell Aerospace. The YF 102 powered the Quiet Short Haul research aircraft prototype and by then the ALF 502 was powering the Bombardier Challenger 600 series and the British Aerospace BA 146.
TECHNICAL DATA - ALF 502R-5 variant
Type High bypass geaerd turbofan
Length 63.7in (1,617mm)
Fan diameter 40.25in (1,022mm)
Dry weight 1,336lbs (606kg)
Compressor Single fan, single stage axial low pressure
compressor, seven stage axial high pressure,
and one stage centrifugal low pressure
Combuster Annular
Power turbine Two stage high and two stage low pressure axial
Maximum thrust 6,970ls
Bypass ratio 5.7/1
Thrust to weigh ratio 5.1lb/lb
Type High bypass geaerd turbofan
Length 63.7in (1,617mm)
Fan diameter 40.25in (1,022mm)
Dry weight 1,336lbs (606kg)
Compressor Single fan, single stage axial low pressure
compressor, seven stage axial high pressure,
and one stage centrifugal low pressure
Combuster Annular
Power turbine Two stage high and two stage low pressure axial
Maximum thrust 6,970ls
Bypass ratio 5.7/1
Thrust to weigh ratio 5.1lb/lb