Thrust
The thrust from a jet engine is determined by the velocity of exhaust gases measured relative to the engine.
The velocity of the exhaust gas as it leaves a jet engine is :
where
-
is the specific enthalpy of the gas leaving the turbine and entering the propelling nozzle is the specific enthalpy of the gas after it has left the propelling nozzle
Alternatively, is related to the temperatures of the exhaust gas:
where
-
is the specific heat of exhaust gas at constant pressure is the temperature of the gas leaving the turbine and entering the propelling nozzle is the temperature of the gas after it has left the propelling nozzle
Read more about this topic: Jet Engine Performance
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