Abradable linings-aircraft engine, Other Engineering

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

Posted Date: 9/12/2012 7:46:57 AM | Location : United States







Related Discussions:- Abradable linings-aircraft engine, Assignment Help, Ask Question on Abradable linings-aircraft engine, Get Answer, Expert's Help, Abradable linings-aircraft engine Discussions

Write discussion on Abradable linings-aircraft engine
Your posts are moderated
Related Questions
Ideal intake conditions: For air to flow smoothly through a compressor, its velocity should be about 0.5 mach at the compressor inlet; this includes aircraft flying faster than

Compressor stall and surge: ‘Surge' can occur in both centrifugal and axial flow compressors and is the reversal of the airflow in the compressor. It is a very undesirable con

PROPELLER SHAFTS Most modern engines, both reciprocating and turbine, have flanged propeller shafts. Some of these flanges have integral internally threaded bushings that fit

Furnace limit switches are wired in series with the?

PITCH LOCK MECHANISM The pitch lock mechanism is necessary to cater for the two fine pitch position of 'flight fine pitch' and 'ground fine pitch'. It acts as a safety device

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

I need the code for a multivariate structural time series model with multiple cyclical components - any language is good.

1. Briefly explain how to conduct a market segmentation analysis for an organization. Answer: There are a number of ways by which the market segmentation analysis of an organizatio

#i need help with plumbing/ engineering assignments, from an expert with australian codes, there is any chance,thank you .

I want circuit diagram of miller sweep generator with components using two transistor bc547