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 This method has been superseded by the other methods.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

Cadmium telluride, what are the manufacturing processes used in cadmium tel...

what are the manufacturing processes used in cadmium telluride manufacture?

Q1, 5) Dupree Funds is considering the fees charged by two banks. First Ame...

5) Dupree Funds is considering the fees charged by two banks. First America charges a flat rate of $0.11 per payment and First Western requires a deposit of $500,000 (that does not

Thermodynamics, original temp. of plate is 25 degree c.when put in burnace ...

original temp. of plate is 25 degree c.when put in burnace its upper part is 250 c and lower is 100 and mass is 56kg.find out heat transfer

Multi-threading problem in operating system, multi-threading problem in ope...

multi-threading problem in operating system 9. With multi-threading, each thread has its own value for the program counter, its own register save area, and its own stack, but all t

Oil filter debris analysis, Oil Filter Debris Analysis Oil filters serv...

Oil Filter Debris Analysis Oil filters serve an important function within the lubrication system of a gas turbine engine in that they remove foreign particles that collect in t

Electronics, explain compensated semiconductors

explain compensated semiconductors

Powder coating issue, occasionally we are getting black streaks in our powd...

occasionally we are getting black streaks in our powder coated parts. Does not seem to be related to paint contamination or cleaning prep. Has anyone else seen this or know what co

What is basic function of subroutine, Question: a) Write the detailed ...

Question: a) Write the detailed operation/description of the following mnemonics: (i) MOVX @DPTR, A (ii) MOVC A, @A + PC (iii) PUSH add b) What is a subroutine and

Fundamentals of lift and drag , Lift and drag are merely the resolved compo...

Lift and drag are merely the resolved components in specific directions of a resultant aerodynamic force caused by the relative velocity V of the vehicle through the air. If al

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