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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.
#question.what if i poured diesel in petrol engine and petrol in diesel engine.
Calculating the thrust of the engine: When applying the above method to calculate the individual thrust loads on the various components it is assumed that the engine is static.
what a problem when we do a construction project
Suppose you have $50,000 that you want to invest in two companies, Bethlehem Books and Allentown Audio. Bethlehem has a return of 10% and standard deviation 15%, while Allentown ha
Beginning from rest when theta=10 degrees, a 30-kg child slides without kinetic friction down the slide which is in the shape of a 2.5 meter circular arc. Determine the child''s sp
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name and elaborate the decision problems in urban and regional planning?
Circuit that is able to convert an AC voltage signal into DC voltage signal
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