COMPONENTS OF JET ENGINE

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COMPONENTS OF  JET ENGINE

FAN or AIR INLET
COMPRESSOR (low pressure and high pressure compressor)
COMBUSTER (combustion chambers)
TURBINE (low and high pressure)
NOZZLE and EXHAUST

FAN or AIR INLET:

The fan is first component in a turbojet engine .This is the part which is also called AIR INLET section. The large spinning fan sucks  in large quantity of air. Mostly blades of fan are made up of titanium. After sucking it speeds up the air an d splits it into two parts. One part is continues through core part or through the centre of jet engine where it is acted upon other jet engine components. The other part is “bypass” around the core. It goes through a duct that surrounds the core through the jet engine where it produces much of the force that propels the airplane forward. This cooler air helps to quiet the jet engine as well as adding thrust to the jet engine.

COMPRESSOR (low pressure and high pressure compressor)

The Compressor is the first component in the jet engine core. The compressor is made up of fans with many blades attached to the shaft .It is of different stages .Each stage consists of vanes which rotates and stators which remains stationary. As air is drawn deeper through the compressor ,its heat and pressure increases. Energy is derived from the turbine, passed along the shaft. The squashed air is then forced into the combustion chamber.

COMBUSTER (combustion chambers)

In the combuster the air is mixed with fuel and then ignited. There are as many as 20 nozzles to spray fuel into the airstreaKONICA MINOLTA DIGITAL CAMERAm.The mixture of air and fuel catches a fire. This provides a high temperature and high energy airflow. The fuel burns with the oxygen in the compressed air, producing hot expanding gases. The inside of the combuster is often made of ceramic materials to provide a heat resistant chamber. This is because the heat can reach to the 2700 degrees.

TURBINE (low and high pressure)

The turbine is a series of the bladed disc that act like a windmill, gaining energy from the hot gases leaving the combuster.The high-energy airflow coming out of the combustor goes into the turbine,causing the turbine blades to rotate.the turbines are linked by a shaft to turn images_2the blades in the compressor and to spin the intake fan at the front.This rotation takes some energy from the high-energy flow that is used to drive a fan and a compressor.In some turbine engines(i.e. turboprop,turboshaft or turbo fan engines),energy is extracted by additional turbine discs and used to drive devices such as propellers,bypass fans or helicopter rotors.The gases produced in the combustion chamber move through the turbine and spin its blades.The turbines of the jet spin around thousands of time.They are fixed on shafts having several sets of ball-bearing in between them.

NOZZLE and EXHAUSTimages_5

The nozzle is the exhaust duct of the jet engine.This is the jet engine part which actually produces the thrust for the plane.Hot gases leaving the engine exhaust to atmospheric pressure via a nozzle,the objective being to produce a high velocity jet.In most cases,the nozzle is convergent and of fixed flow area.The energy depleted airflow that passed the turbine,in addition to the colder air that bypassed the engine core produces a force when exiting the nozzle that acts to propel the engine and therefore the airplane forward.The combination of hot and cold air expelled and produces a exhaust,which in results causes tha forward thrust.

 

 

 

 

 

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