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

Financial leverage Multiplayer , How i can have the FLM if i dont have the ...

How i can have the FLM if i dont have the Total Assets or Shareholders Equity

Company Acquisition and Takeover vs acquisition , Company Acquisition, Take...

Company Acquisition, Takeover vs acquisition and holding copany A fundamental characteristic of merger (either through absorption or consolidation) is that the acquiring or amalg

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

Naval architecture and marine engineering, i have a coursework for finite e...

i have a coursework for finite element analysis of marine structure and i need help to solve it

Solid state devices, Derive an expression for electron concentration in con...

Derive an expression for electron concentration in conduction band and hole concentration in valance band

Identify people at risk - fire risk assessment, Identify people at risk: ...

Identify people at risk: It is often easy to forget that there may be people in a building who cannot move as quickly as the rest of us.  They may be in a wheel chair, they ma

Matlab assignment, can you formulate a program using only bubblesort for as...

can you formulate a program using only bubblesort for assigning grades in an array?

Calculating the thrust of the engine - engine performance, Calculating the ...

Calculating the thrust of the engine: When applying the above method to calculate the individual thrust loads on the various components it is assumed that the engine is static.

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