Garrett JFS100 Gas Turbine
The Garrett JFS100 13A is a sophisticated twin shaft gas turbine starter unit often referred to as a "Jet Fuel Starter".This unit may be found surplus in the USA and is relatively common. It is possible to adapt the JFS100 for a number of ground based and airborne applications. The twin shaft layout allows the unit to be adapted for wheel driven vehicle applications and also after removal of the power turbine assembly the unit may be operated as a Turbo-Jet. As with similar units the engine suffers a number of limitations in terms of endurance and is intermittently rated.

The JFS100 features completely self contained fuel and oil systems, it also uses a onboard alternator to provide electrical power. The original aircraft installed JFS was capable of being started with a supply of compressed air only. Normal starting is also permitted by the use of an electric starter. The engine incorporates a neat little accessory drive which carries the electrical, fuel and oil systems.

The JFS100 is similar in many ways to the British Plessey Solent GTS but features a continueous oil system.

Garrett JFS100 Cutaway
Garrett JFS100 Specification
Power Output...............................................90 Bhp
RPM............................................................72,000 (Gas Generator)
Compressor................................................. Centrifugal Impeller
Combustion Chamber...................................Anular through flow combustion chamber with five burners
Turbine.........................................................Axial Flow
Power Turbine..............................................Axial Flow
Starting........................................................Electric Starter or Air Impingement
Ignition.........................................................High Energy supplied from onboard Generator
Fuel System.................................................Gear Pump with Centrifugal Governor, Acceleration Control
Lubrication System.......................................Return System, Gerotor Pump and Reservoir, Reduction G/box Splash Lube.
Layout......................................................... Twin Spool with 18:1 Reduction Gearbox Max Output Speed 3300 rpm
Weight..........................................................38 kg
Applications.................................................Gas Turbine Starter (Jet Fuel Starter) for fighter Aircraft

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