Active clearance control system, Other Engineering

Assignment Help:

Active clearance control system

The system provides fan discharge air for cooling the core compartment and the low-pressure turbine case. At low altitudes the core engine requires more cooling and the LPT case requires less cooling to prevent rub. At high altitude the core requires less and in the LPT core requires more to close clearances.

By means of a Y manifold and two shut-off valves, cooling air can be selectively directed to the core compartment or to the LPT case. The valves are not positively shut, but permit a required minimum flow at all altitudes and when activated added flow is directed. The valves are controlled by an altitude sensor which activates the core compartment valve below 19,000 feet +5000 feet and the LPT case valve above 19,000 feet +5000 feet.

Increased cooling airflow causes the cases to cool and shrink. This shrinkage closes blade tip to case clearances producing improved efficiency.

 

1625_active clearance control system.png


Related Discussions:- Active clearance control system

Research paper, You will research an issue relating to money and banking. Y...

You will research an issue relating to money and banking. You will write an eight- to 10-page paper discussing your research, in depth. You will also need to relate your research t

Imaging infrared seekers , Imaging Infrared Seekers  A more common appr...

Imaging Infrared Seekers  A more common approach is to use an infrared waveband where there is a large amount of ambient light from the thermal emission of the background. Th

Engine controls - aircraft engine, Engine controls: Engine controls are...

Engine controls: Engine controls are very similar to flying controls, and the same types of equipment are used, such as rods, bellcranks and cables. Most control systems use ei

VLSI, what is meant by VMOS

what is meant by VMOS

Spinning reticle seekers , Spinning Reticle Seekers  A spinning reti...

Spinning Reticle Seekers  A spinning reticle seeker contains a single thermal detector and a spinning patterned disk - such as the ‘Rising Sun' Reticle.   - consis

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

#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

Linear integrated circuit, ac analysis for dual input unbalanced output dif...

ac analysis for dual input unbalanced output differntial amplifier

Moulding materials, The commonly used moulding materials for mould making...

The commonly used moulding materials for mould making can be broadly classified into the following two groups :             (a) Metals : Including grey cast iron, steel and an

C programming fork() dub2(), develop a C program for Linux called pipes.c t...

develop a C program for Linux called pipes.c that does the following: In the main() function, it creates a pipe using the pipe() function, then creates two child processes with for

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