Re-heat ignition system in aircraft engine, Other Engineering

Assignment Help:

Re-heat Ignition

The atomised fuel spray is fed into the re-heat jet pipe and ignited by one of three methods:-
• Spark Ignition
• Hot Streak Ignition
• Catalytic Ignition

a. Spark Ignition. Spark ignition for re-heat fuel is similar to normal engine ignition. Light-up is obtained by using a pilot fuel burner and an igniter plug. The igniter plug is fitted downstream of the pilot burner in a conical fitting that is a part of the re-heat system. The core provides airflow conditions suitable for light-up and when fuel is sprayed from the pilot burner, it is carried on to the igniter plug and ignition takes place. This method has been superseded by the other methods.

b. Hot Streak Ignition. The hot streak ignition system is more often called ‘hot shot' ignition. It consists of one or two fuel injectors; one sprays fuel into the engine combustion system and the other if fitted sprays fuel aft of the turbine as a relay system to keep the flame alight for a longer distance. Spraying additional fuel into the main combustion area causes an elongated flame and a ‘hot streak' flame reaches and ignites the re-heat fuel. The turbine blades are not damaged because the hot streak flame is of short duration. This method provides a very quick light up, however if it fails to light then reheat has to be reselected.

c. Catalytic Ignition. Catalytic ignition is achieved by use of a platinum/rhodium element. Atomised fuel is sprayed over the element and a chemical reaction causes spontaneous ignition.

511_reheat ignation.png

886_reheat ignation1.png


Related Discussions:- Re-heat ignition system in aircraft engine

Clippers, WHAT IS THE DIAGRAM OF TWO LEVEL CLIPPER WITHOUT REFERENCE AND EX...

WHAT IS THE DIAGRAM OF TWO LEVEL CLIPPER WITHOUT REFERENCE AND EXPLAIN

Summing amplifier, Summing amplifier: As the title implies, this is an ...

Summing amplifier: As the title implies, this is an adding device.  The circuit can take any number of voltage inputs, and the output voltage is simply the sum of these inputs.

When should stock rather than debt to fund its operations?, When should sto...

When should stock rather than debt to fund its operations? There are several reasons for an organization to problem inventory rather than financial obligations. The first is if

Series of cash flows in economical engineering, Series of Cash Flows M...

Series of Cash Flows Most engineering economic analysis involve more than a single return occurring after the investment is made. In such cases, the present worth or the futur

Quality assurance, Graduate project in the field of quality assurance

Graduate project in the field of quality assurance

Function intersect - set operations, Function intersect - set operations: ...

Function intersect - set operations: The function intersect returns, additionally to the vector having the values in the intersection of v1 and v2, an index vector into v1 and

Differentiate crystalline and amorphous materials, Q.   Differentiate cryst...

Q.   Differentiate crystalline and amorphous materials? (a)Crystalline solids:  Those solids in which the, ions atoms or molecules in a definite regular repeated

Application to the axial flow compressor, APPLICATION TO THE AXIAL FLOW COM...

APPLICATION TO THE AXIAL FLOW COMPRESSOR: In order for the compressor to deliver a high mass airflow for a minimum effort required to drive it, it is important that all the com

Design a pavilion , i need somone to design a pavilion for me

i need somone to design a pavilion for me

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