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 This method has been superseded by the other methods.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

Aviation, Aircraft maintenance engineering

Aircraft maintenance engineering

Matrices for risk analysis, Matrices for risk analysis: NFPA 551 descr...

Matrices for risk analysis: NFPA 551 describes a technique of using matrices for risk analysis.  Such matrices are quite commonly used in the UK for assessing risk but, fortun

Thermo electric thermometer, how thermoelecteric thermometer is contructed ...

how thermoelecteric thermometer is contructed and how it working

Edc, Combination clipper

Combination clipper

Thermodynamics of materials, outline five (5) areas where thermodynamics ca...

outline five (5) areas where thermodynamics can be applied in materials engineering

Caselet- 2, suggestion regarding credit limit. should it be approved or not...

suggestion regarding credit limit. should it be approved or not what should be the amount of

KK-3 system coding, how to write code for any particle shape using KK-3 sys...

how to write code for any particle shape using KK-3 system coding in grope technology

Oscilloscope, connecting probe in CRO causes

connecting probe in CRO causes

Efficient market hypothesis, the nature and importance of the efficient mar...

the nature and importance of the efficient market hypothesis and comment on the implications for managers and investors?

Maximum speed-procraft, Maximum speed -Pro craft The standard approach f...

Maximum speed -Pro craft The standard approach for prop-driven aircraft is to assume that engine and propeller together produce a power (as opposed to thrust) output that is ind

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