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:
“Some are born great, some achieve greatness, and some have greatness thrust upon ‘em.”
—William Shakespeare (1564–1616)
“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)
“Freedom of choice for women, at the expense of the caring, warmth, and sensitivity to others so often associated with them, may be empty. In the thrust to redefine male and female roles, women must not become men; nor can men be permitted the continual dehumanization of their roles.”
—Kathleen Weibel (b. 1945)