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 This method has been superseded by the other methods.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

Interview Technique, Explain interview technique in software engineering in...

Explain interview technique in software engineering in brief?

European vanilla Call option with strike price, Let C(K) denote a European ...

Let C(K) denote a European vanilla Call option with strike price K. Assume that all options are identical except for strike price, and strike prices satisfy K1 Question 1: What ar

#title.MARKET VALUE WEIGHT OF EQUITY., AAA has 1,000,000 shares of common s...

AAA has 1,000,000 shares of common stock trading at $20.00 per share. The company''s debt consists of 2,000 $1,000 par value 10-year 7.0% annual coupon bonds with semiannual paymen

Measurements of economic worth, Measurements of Economic Worth There a...

Measurements of Economic Worth There are several methods of economic worth used to compare alternatives. If you decide to use present worth analysis, then you have indicate a

Vibrating beam accelerometer, Vibrating beam accelerometer The electrod...

Vibrating beam accelerometer The electrodes are driven by a high frequency voltage (1 MHz). The displacement is measured using a phase detector from the change of capacitance b

Hot section inspections of aircraft, Hot Section Inspections (HSI's) Th...

Hot Section Inspections (HSI's) The hot section includes all components in the combustion and turbine sections of the engine. Scheduled inspections may involve visual inspectio

An essay on power train, Interior noise is basically airborne or structure-...

Interior noise is basically airborne or structure-borne. The excitation sources of vibratation and noise from engines can be divided as mechanical, combustion, and flow sources.

Effects of temperature and altitude on engine, Effects of Temperature and A...

Effects of Temperature and Altitude. Cold and/or Low On cold days the air density will increase. If the engine has a ‘part throttle rating' and the throttle is advanced to

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