Changes in temperature and pressure-aircraft maintenance, Other Engineering

Assignment Help:

Changes in temperature and pressure:

The changes in temperature and pressure of the gases through a gas turbine engine are illustrated in Figure 1.5 The efficiency with which these changes are made will determine to what extent the desired relations between pressure, temperature and velocity are obtained.  The more efficient the compressor, the higher is the pressure generated for a given work input - i.e. for a given temperature rise of the gas.  Conversely, the more efficiently the turbine uses the expanding gas, the greater is the output of work for a given temperature drop in gas.

 

1494_changes in temprature and pressure.png

VELOCITY AND PRESSURE

During the passage of the air (gas) through the engine, aerodynamic and energy requirements demand changes in its velocity and pressure. For example, during compression a rise in the pressure of the air is required with no increase in its velocity. After the air has been heated and its internal energy increased by combustion, an increase in the velocity of the gases is necessary to cause the turbine to rotate. Also at the propelling nozzle, a high velocity is required, for it is the change in momentum of the air that provides the thrust on the aircraft. Local decelerations of gas flow are also required - for example, in the combustion chambers to provide a low velocity zone for the flame.


Related Discussions:- Changes in temperature and pressure-aircraft maintenance

Unidirectional fabric, Unidirectional Fabric A unidirectional (UD) ply ...

Unidirectional Fabric A unidirectional (UD) ply is one in which all of the fibres run in one direction only. A small amount of fibre or other material may run in other directio

Engine controls - aircraft engine, Engine controls: Engine controls are...

Engine controls: Engine controls are very similar to flying controls, and the same types of equipment are used, such as rods, bellcranks and cables. Most control systems use ei

Fiancial managment, Suppose you borrow $10,000 at 10% and you are going to ...

Suppose you borrow $10,000 at 10% and you are going to make monthly payments of $2,500. How long until you pay off the loan?

Estimate the energy loss from the pipe per meter , A 50 cm  diameter pipeli...

A 50 cm  diameter pipeline in the Arctic Carries hot oil at 30 0 C and exposed to a surrounding temperature of -20 0 C. Special powder insulation 5 cm thick surrounds the pipe an

Sand casting, Sand castings are porous enough and, therefore, cannot be use...

Sand castings are porous enough and, therefore, cannot be used for pressure sight vessels. Structure obtained by sand casting is loose and hence not stranger than wrought products.

Problem, the royal canadian hillies plan to locate a brandy carryout in the...

the royal canadian hillies plan to locate a brandy carryout in the Yukan.A number of saint Bernard dogs ,trained by sergeant preston ,will be used to rescue lost tourists looking f

thermoelectric effect, Thermoelectric effect The measurement of temper...

Thermoelectric effect The measurement of temperature using a thermocouple relies on Seebeck effect. The electrons occupy different energy levels in different materials

Dsp, find IDFT of the sequence X(k)={5,0,1,-j,0,1,0,1,j,0}

find IDFT of the sequence X(k)={5,0,1,-j,0,1,0,1,j,0}

Mine Surveying.., Question 1 (100 marks) As Surveyor in charge of an underg...

Question 1 (100 marks) As Surveyor in charge of an underground mine you have been instructed to design a tunnel to join a crosscut to a haulage drive. The details of the crosscut a

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