Abradable linings-aircraft engine, Other Engineering

Assignment Help:

Abradable Linings:

Abradable Linings are usually made of a composite material which will be abraded away should the tip of a rotating blade touch the material. In flight the casings of an engine are subject to large changes in ambient temperature, so they will expand or contract. As we know the air temperature at 30,000ft is close to -50°C this would cause the casings to contract onto the rotor and the blades will then rub. To overcome this problem abrasive materials where used on early engines to wear down the tip of the blades, but this may cause balance problems. So most engines now use abradable linings that maintain minimum tip clearance but do not affect balance. They are usually found on the fan as this is the cold area of the rotating assemblies.

1842_Abradable Linings.png


Related Discussions:- Abradable linings-aircraft engine

Centrifugal flow - compressors in aircraft, Centrifugal flow - Compressors ...

Centrifugal flow - Compressors in Aircraft: The centrifugal impeller is rotated at high speed by the turbine and centrifugal action causes the air between the impeller vanes to

Tvm, hOW LONG WILL IT TAKE AN AMOUNT TO DOUBLE IF THE INTEREST RATE IS 7% P...

hOW LONG WILL IT TAKE AN AMOUNT TO DOUBLE IF THE INTEREST RATE IS 7% P.A. COMPOUNDED ANNUALLY

Fire protection systems of aircraft, FIRE PROTECTION SYSTEMS A complete...

FIRE PROTECTION SYSTEMS A complete fire warning system consists of a detection system, an extinguisher system and a method of detecting that the fire is out. There are specifi

International financial management , explain the funcyions and structure of...

explain the funcyions and structure of foreign exchange market.

Radar engineering, Calculate the maximum range when radar operates at 10GHz...

Calculate the maximum range when radar operates at 10GHz and has peak power=10 Mwatt,S/N ratio=10dB,antenna cross section=100 mm2,target cross section=10mm2.The gain of transmittin

Tabular method, Ask question #Minimumsolve the following convolution in tab...

Ask question #Minimumsolve the following convolution in tabular form X(n)={1 2 -3 4 } h(n)={1 2 3 4 } 100 words accepted#

Principles of fire risk assessment, Principles of fire risk assessment: ...

Principles of fire risk assessment: The following principles of FRAs apply in the UK as they do in the USA: justifying assumptions, stating data sources,

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