Allison Advanced Development Company

Robert G Siefker

Syed Arif Khalid

Von David Baker

Baily Ramachandra Vittal

James Carl Loebig

Disclosed is an exhaust mixer ( ) including a passage ( ) extending from an inlet ( ) to an outlet ( ) that is coincident with a centerline axis of mixer ( ). Several ridges ( ) are circumferentially disposed about the axis and each flare away from the centerline axis relative to a direction along the centerline axis from inlet ( ) toward outlet ( ). Ridges ( ) each define a corresponding one of several inner channels ( ) radially disposed about passage ( ) that each intersect passage ( ) between inlet ( ) and outlet ( ). Several outer channels ( ) are also radially disposed about passage( ) and are each positioned between a corresponding pair of inner channels ( ). Ridges are each shaped to turn inner channels ( and outer channels ( ) about the axis as ridges ( ) extend along the indicated direction. Inner channels ( ) diverge away from the axis and one another in this direction while outer channels ( ) converge toward the axis and one another in this direction.

Exhaust mixer and apparatus using same

The present invention contemplates a mechanical coupling for connecting a gas turbine engine to an aircraft mounted exhaust system. In one embodiment, the coupling includes a collar mounted to the gas turbine engine proximate the gas turbine engine's outlet. The collar having a pair of spaced elongated recesses formed therein. An inner surface of the exhaust system includes a pair of pins extending into the pair of spaced elongated recesses. The inter-engagement of the pins and recesses connect the gas turbine engine with the exhaust system. The pins being moveable within the recesses in response to movement by the gas turbine engine.

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Greenwood, IN, United States of America

Robert G Siefker