Tip turbine engine composite tailcone
AssigneeRaytheon Technologies Corporation
InventorsBrian Merry, Gabriel L. Suciu, James W. Norris
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Abstract
A non-metallic tailcone in a tip turbine engine includes a tapered wall structure disposed about a central axis. The non-metallic tailcone is fastened to a structural frame in the aft portion of the tip turbine engine. The tip turbine engine produces a first temperature gas stream from a first output source and a second temperature gas stream from a second output source. The second temperature gas stream is a lower temperature than the first temperature gas stream. The second temperature gas stream is discharged at an inner diameter of the tip turbine engine over an outer surface of the tailcone. Discharging the cooler second temperature gas stream at the inner diameter allows a non-metallic to be used to form the tailcone.
Claims16
A tailcone system of a tip turbine engine comprising:
- a first temperature gas stream from a first output;
- a second temperature gas stream from a second output, said second temperature being less than said first temperature;
- a non-metallic tailcone mounted aft of said first output and said second output, said non-metallic tailcone receiving at least said second temperature gas stream over an outer surface of said non-metallic tailcone, and wherein said non-metallic tailcone comprises a non-metallic wall structure consisting of a fiber reinforced polymer composite material disposed about a central axis, said non-metallic wall structure defining a forward portion and an aft portion, said non-metallic tailcone tapering from said forward portion to said aft portion and defining an interior compartment along said central axis.
Dependencies are inferred from the claim text.