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
Famous quotes containing the word thrust:
“In my stars I am above thee, but be not afraid of greatness. Some are born great, some achieve greatness, and some have greatness thrust upon ‘em.”
—William Shakespeare (1564–1616)
“A man renowned for repartee
Will seldom scruple to make free
With friendship’s finest feeling,
Will thrust a dagger at your breast,
And say he wounded you in jest,
By way of balm for healing.”
—William Cowper (1731–1800)
“An image of its state;
The wings half spread for flight,
The breast thrust out in pride
Whether to play, or to ride
Those winds that clamour of approaching night.”
—William Butler Yeats (1865–1939)