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
Internal Rate of Return: Multiple Alternatives To compare multiple alternatives using the IRR as measure of economic worth we must use the incremental approach. It is erroneou

Diffuser action: The flare, which increases the area of the duct, is known as a diffuser and its shape determines the rate of compression and the amount by which the air is com

WHY VOLTAGE GENERATED IN MULTIPLES OF 11

explain the fibre optic communication system with block diagram

Causes of unbalance Unbalance may be caused by a variety of factors occurring singly or in combination with others. These factors include:- a) Eccentricity Eccentricity

How much heat in kJ is released when 4.1 grams of ethanol burns? C2H5OH(l) + 3 O2(g) ? 2 CO2(g) + 3 H2O(l), ?H = -1366.8 kJ/mol rxn

superheated steam flow measurement please provide formula used for density correction factor

Expertsmind.com brings you unique solution in electrical engineering -          Laws of Motion -          Speed is how much distance will be covered in a certain time.

Phase detector Phase detector (PD) consists of a multiplier and a low pass filter. The output of the PD has a magnitude proportional to V s cos 2 φ  where φ is the phase shif

explain the objective of capital budgeting