Aircraft Gas Turbine Engine Spinner
The function of aircraft gas turbine engine spinner is to direct air radially outward from the center of fan blade hub into fan blade assembly so that blade can accelerate the air. Aircraft gas turbine engine operated under temperature and humidity condition which could promote formation of substinitial layer of ice on the surface of engine spinner , thereby seriously disturbing incoming airflow to compressor which cause stall or surge and this lead to engine flame out.The anti-ice or de-ice system is used to prevent spinner from ice . The formation of ice depends on shape of spinner. Thus , the method which is used to prevent the ice formation also depends on spinner shape.The normal spinner shape used in modern aircraft gas turbine engine are elliptical, conical and coniptical . Elliptical Spinner : Fig 01 Elliptical Shape Spinner An elliptical spinner is more efficient than other spinner but ice formation start at a lower humidity as compared to other spinner design...