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US 8,132,755 B2Granted
Engine exhaust system with directional nozzle
AssigneeBell Helicopter Textron Inc.
InventorsCharles Hollimon, John Barber, John Herman Sherrer, Robert Laramee
Life of this patent
Estimating the term…
Abstract
An exhaust system for an aircraft has a primary exhaust duct for communicating exhaust gas from an engine exhaust exit and is configured for movement with the engine. A secondary exhaust duct is in fluid communication with the primary exhaust duct and is movably mounted to the airframe. The secondary duct has a portion selectively rotatable relative to the remainder of the secondary duct for directing the exhaust gas vector. The system has means for maintaining a generally consistent relative alignment between the primary duct and the secondary duct.
Claims19
An exhaust system for an aircraft having an airframe and an engine with an exhaust exit, the exhaust system comprising:
- a primary exhaust duct adapted to communicate exhaust gas from the engine exhaust exit and configured for movement with the engine;
- a secondary exhaust duct in communication with the primary exhaust duct and adapted to be movably mounted to the airframe, the secondary duct having a portion selectively rotatable relative to the remainder of the secondary duct;
- a drag link connecting the secondary duct to the primary duct, the drag link being configured to maintain coaxial alignment between the primary duct and the secondary duct and to allow axial movement of the secondary duct relative to the primary duct;
- and
- a slip joint positioned between the primary duct and the secondary duct, the slip joint being configured to allow axial movement of the secondary duct relative to the primary duct and configured to prevent vertical and lateral movement of the secondary duct relative to the primary duct.
2 more elements
An aircraft engine system, comprising:
- an engine having an exhaust exit;
- a primary exhaust duct in fluid communication with the exhaust exit and configured for movement with the engine;
- a secondary exhaust duct in fluid communication with the primary exhaust duct and adapted to be movably mounted to the airframe, the secondary duct having a portion selectively rotatable relative to the remainder of the secondary duct;
- a drag link connecting the secondary duct to the primary duct, the drag link being configured to maintain coaxial alignment between the primary duct and the secondary duct and to allow axial movement of the secondary duct relative to the primary duct;
- and
- a slip joint positioned between the primary duct and the secondary duct, the slip joint being configured to allow axial movement of the secondary duct relative to the primary duct and configured to prevent vertical and lateral movement of the secondary duct relative to the primary duct.
3 more elements
An aircraft, comprising:
- an airframe;
- an engine having an exhaust exit;
- a primary exhaust duct in fluid communication with the exhaust exit and configured for movement with the engine;
- a secondary exhaust duct in fluid communication with the primary exhaust duct and adapted to be movably mounted to the airframe, the secondary duct having a portion selectively rotatable relative to the remainder of the secondary duct;
- a drag link connecting the secondary duct to the primary duct, the drag link being configured to maintain coaxial alignment between the primary duct and the secondary duct and to allow axial movement of the secondary duct relative to the primary duct;
- and
- a slip joint positioned between the primary duct and the secondary duct, the slip joint being configured to allow axial movement of the secondary duct relative to the primary duct and configured to prevent vertical and lateral movement of the secondary duct relative to the primary duct.
4 more elements
An aircraft, comprising:
- an airframe;
- an engine having an exhaust exit;
- a primary exhaust duct in fluid communication with the exhaust exit and configured for movement with the engine;
- a secondary exhaust duct in fluid communication with the primary exhaust duct and adapted to be movably mounted to the airframe, the secondary duct having a portion selectively rotatable relative to the remainder of the secondary duct;
- a drag link connecting the secondary duct to the primary duct, the drag link being configured to maintain coaxial alignment between the primary duct and the secondary duct and to allow axial movement of the secondary duct relative to the primary duct;
- a slip joint positioned between the primary duct and the secondary duct, the slip joint being configured to allow axial movement of the secondary duct relative to the primary duct and configured to prevent vertical and lateral movement of the secondary duct relative to the primary duct;
- and
- at least one strut connecting the secondary duct to the airframe;
- wherein the link and at least one strut cooperate to maintain a generally consistent relative alignment between the primary duct and the secondary duct.
6 more elements
Dependencies are inferred from the claim text.