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

Operations research, At a machine tool plant, five jobs must be completed e...

At a machine tool plant, five jobs must be completed each day. The time it takes to do each job depends on the machine used to do the job. If a machine is used at all, there is a s

Oil pressure warning light in aircraft, Oil pressure warning light: Oil...

Oil pressure warning light: Oil pressure is also monitored by an oil pressure switch that puts a light on when the oil pressure reaches a low level. The light is usually red an

Guidance control system, Guidance Control system The control aspect...

Guidance Control system The control aspect of the guidance system is intended to stabilise the behaviour of the airframe.  The fact that the guidance system will always h

Civil engineering structures, I need help for my project report plz. > Prec...

I need help for my project report plz. > Precast concrete panels manufactured in factory environments and rapidly cured using steam are being used for the walls of shallow foundati

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,

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

Communication, Can u provide some information about simple wireless transmi...

Can u provide some information about simple wireless transmitter and receiver.

External air tappings - aircraft engine , External air tappings: Engine...

External air tappings: Engines vary as to the number of external air tappings and their usage. The following notes are taken from the Pratt and Whitney JT9D but have been simp

Linear programing, Description of the Diet Problem The goal of the diet pro...

Description of the Diet Problem The goal of the diet problem is to find an ”optimal” combination of foods that will satisfy all the daily nutritional requirements of an individual.

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