Reaction engines - aircraft maintance, Other Engineering

Assignment Help:

These can be divided into several categories.

Turbojet engines. The turbojet was the first type of jet engine developed. In this engine all the air passes through the core engine (i.e. the compressor, combustor and turbine). The engine may be single shaft as in the Avon engine, or twin shafted as in the Olympus 593 fitted to Concorde.

These engines are noisy and are not the most fuel efficient for normal use, however for high altitude high speed flight they are in a class of their own.

1054_reaction engine.png

b. Low and Medium By-pass or turbofan engines. These engines will have two or three shafts. The Low Pressure (LP) shaft drives a larger diameter compressor. Some of the air produced by-passes the core engine (hence the name) and is used to provide thrust. The core airflow provides power for the compressors and thrust. These engine are quieter than turbojets and more fuel efficient. The Spey and

Tay engines fall into this category.

1024_reaction engine2.png

The by-pass ratio is determined by the ratio of the air in flowing through the by-pass to the air passing through the core of the engine. Low by-pass less than 2:1, medium by-pass 2:1 to 4:1, high by pass greater than 5:1.
c. High by-pass turbofan engines. These engines have very large fans driven by a relatively small core engine. Often the fan is geared to run at a lower speed than the LP turbine, which gives the turbine mechanical advantage and also allows it to run at higher speed where it is more efficient. The ALF 502, RB211 and the Trent engines are all high by-pass
High by-pass engines are very fuel efficient, powerful and quiet. These engines have a very large diameter which does give drag problems, and are not suitable for high speed flight as the blade tips will suffer compressibility problems as they approach the speed of sound.

170_reaction engine1.png

 


Related Discussions:- Reaction engines - aircraft maintance

Terrestrial telescope., how to making terrestrial tele scope an how its wor...

how to making terrestrial tele scope an how its work and formulation of terrestrial telescope

C programming fork() dub2(), develop a C program for Linux called pipes.c t...

develop a C program for Linux called pipes.c that does the following: In the main() function, it creates a pipe using the pipe() function, then creates two child processes with for

Define Thermal equilibrium, Thermal equilibrium The definition and measurem...

Thermal equilibrium The definition and measurement of temperature must be logically preceded by the concept of thermal equilibrium and the Zeroth law. To determine operationally wh

Engineering mechanics questions, I need help in engineering mechanics quest...

I need help in engineering mechanics questions? Do you provide homework help, Please let us know how do i get it quich time...

Automatic interior car lights control, hi there, i need to know if its poss...

hi there, i need to know if its possible to create a circuit of automatic interior car lights control

Nozzle guide vane inspection, Nozzle Guide Vane Inspection: Inspection ...

Nozzle Guide Vane Inspection: Inspection of the NGVs is possible using a strong light source and mirror, it is more probable however that a boroscope inspection will be require

Secondary operations in powder metallurgy methods, Q. What are the secondar...

Q. What are the secondary operations we apply in powder metallurgy methods. Give their use also. Ans. Secondary Processes of Manufacture : In addition to the basic proce

Compacting or briquetting, The operation of heating a green compact to an e...

The operation of heating a green compact to an elevated temperature is known as sintering. It is a process by which solid bodies are bonded by atomic forces. It is carried out belo

Which scheme provides the best spectrum capacity, Question: (a) What a...

Question: (a) What are the criteria that a frequency planner and a network engineer need to consider during cellular planning and design. (b) Assuming that you work as a c

Java , why we need EJB

why we need EJB

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