The brayton cycle-aeronautical engineering, Other Engineering

Assignment Help:

The brayton cycle:

The working cycle of the gas turbine engine is similar to that of the four-stroke piston engine.  There is induction, compression, ignition and exhaust in both cases, although the process is continuous in a gas turbine.  Also, the combustion in a piston engine occurs at a constant volume, whilst in a gas turbine engine it occurs at a constant pressure.

900_The brayton cycle.png

The cycle, upon which the gas turbine engine functions, in its simplest form, is the Brayton cycle, which is represented by the pressure/volume diagram, shown in figure.

1713_The brayton cycle1.png

The air entering the engine is compressed.

  • Heat is added to the air by burning fuel at a constant pressure, thereby considerably increasing the volume of the resulting gas.
  • The gases resulting from combustion expand through the turbine, which converts some of the energy in the expanding gases into mechanical energy to drive the compressor.
  • The remainder of the expanding gases are propelled through the turbine and jet pipe back to the atmosphere where they provide the propulsive jet.

There are three main stages in the engine working cycle during which the changes discussed occur:

  • During compression. Work is done on the air. This increases the pressure and temperature and decreases the volume of air.
  • During combustion. Fuel is added to the air and then burnt. This increases the temperature and volume of the gas, whilst the pressure remains almost constant (the latter being arranged by design in a gas turbine engine).
  • During expansion. Energy is taken from the gas stream to drive the compressor via the turbine; this decreases the temperature and pressure, whilst the volume increases. The rapidly expanding gases are propelled through the turbine and jet pipe to give a final momentum that is much greater than the initial momentum; it is this change in momentum which produces the propulsive jet.

 

 

 

 


Related Discussions:- The brayton cycle-aeronautical engineering

Maintenance of aircraft under “b” conditions, Maintenance of Aircraft under...

Maintenance of Aircraft under “B” conditions:   The maintenance of aircraft flying under "B" conditions must be adequate in relation to the number and duration of the flight

Discuss the heuristic search as applied to an and/or graph, Question 1 Wha...

Question 1 What is Artificial Intelligence? Discuss the two class of approaches followed for AI Question 2 Discuss the heuristic search as applied to an AND/OR Graph Ques

Blow hole and pin hole porosity, Blow Holes                    (i) Exc...

Blow Holes                    (i) Excessive moisture in the moulding sand.                   (ii) Low permeability and excessive fine grain sands.                   (iii

Rotating Equipment, #What are the types of pumps used in oil industry? How...

#What are the types of pumps used in oil industry? How to perform fault finding report?

Welding techniques - plasma arc welding (paw), Plasma Arc Welding (PAW) is...

Plasma Arc Welding (PAW) is a special form of gas tungsten arc welding in which constricted plasma arc is directed at the weld area. In PAW, a tungsten electrode is contained in a

DIGITAL SIGNAL PROCESSING, PROBLEM BASED ON USING CHEBYSCHEV IIR FILTER USI...

PROBLEM BASED ON USING CHEBYSCHEV IIR FILTER USING BILINEAR TRANSFORMATION

#magnetic circuit, an iron ring with amean dia of 50 cm has an air gap of 1...

an iron ring with amean dia of 50 cm has an air gap of 1mm awinding of 200 turns if the permeability of the iron is 400 when a circuit of 1.25A flows through the coil find the flux

Aerofoil theory and the axial flow compressor, Aerofoil theory and the axia...

Aerofoil theory and the axial flow compressor  The blades of the axial flow compressor are aerofoils and as such behave in a similar way to aircraft mainplanes and propeller bl

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd