Fan case abradable drainage trench and slot

Details Fan case abradable drainage trench and slot Fan case abradable drainage trench and slot

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 25/32 (2006.01) F01D 11/12 (2006.01)

Patent

CA 2599799

A fan case for a gas turbine engine is provided to prevent water from pooling and freezing inside the fan case when the gas turbine is not in operation, and potentially prevent the engine from starting and/or cause engine damage. The fan case is therefore adapted to provide a drainage system allowing water to freely escape the fan case without compromising the structural integrity of the fan case. The fan case comprises: a hollow body; an abradable liner disposed inside the hollow body; a flange on the hollow body defining a surface for mating to a forward part of the engine; and, a first radial slot extending across the mating surface of the hollow body. The abradable liner has an inside surface for circumscribing the fan blades wherein the first radial slot is in a free-draining relation with the inside surface of the abradable liner.

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