Abstract: A gas turbine engine includes an engine core outer casing and a fan nacelle spaced radially outwardly relative to the engine core outer casing to define a bypass duct. A plurality of drag links is used to pivot blocker doors into a flow blocking position in the bypass duct when a thrust reverser is deployed. The plurality of drag links is located within the bypass duct in an area of non-uniform flow defined by a plurality of local airflow angles. Each drag link is individually configured to align with one of the local flow angles.

Abstract: A gas turbine engine includes a thrust reverser including a plurality of blocker doors moveable between a deployed position and a stowed position. A gap is defined between adjacent blocker doors when in the stowed position. A plurality of divots are mounted forward of the plurality of blocker doors to substantially cover the gap between the adjacent blocker doors when in the stowed position.

Abstract: A gas turbine engine includes a thrust reverser including a plurality of blocker doors moveable between a deployed position and a stowed position. A gap is defined between adjacent blocker doors when in the stowed position. A plurality of divots are mounted forward of the plurality of blocker doors to substantially cover the gap between the adjacent blocker doors when in the stowed position.

Abstract: A turbofan engine includes a core nacelle housing a spool having a turbine. A turbofan is arranged upstream from the core nacelle and is coupled to the spool. A fan nacelle surrounds the turbofan and core nacelle. A bifurcation supports the core nacelle relative to the fan nacelle and extends radially between the nacelles. The core and fan nacelles provide a bypass flow path receiving bypass flow from the turbofan. In the example, the nacelles provide a fixed nozzle exit area. The bifurcation includes an inlet that is in communication with a passage. The passage is selectively opened and closed by a valve to provide air from the inlet to a vent opening near the nozzle exit area. By opening the valve, the nozzle exit area is effectively increased to provide increased bypass flow through the turbine engine.

Abstract: A gas turbine engine includes an engine core outer casing and a fan nacelle spaced radially outwardly relative to the engine core outer casing to define a bypass duct. A plurality of drag links is used to pivot blocker doors into a flow blocking position in the bypass duct when a thrust reverser is deployed. The plurality of drag links is located within the bypass duct in an area of non-uniform flow defined by a plurality of local airflow angles. Each drag link is individually configured to align with one of the local flow angles.

Abstract: A turbofan engine includes a fan variable area nozzle, which includes a louver system having a multiple of slats generally transverse to the engine axis. Each of the louver slats are pivotally mounted to the fan nacelle to vary the effective area of the fan nozzle exit area and permit efficient engine operation at predefined pressure ratios.

Abstract: An example core nacelle for a gas turbine engine includes a core cowl positioned adjacent an inner duct boundary of a fan bypass passage and having a pocket and an airfoil received within the pocket. The airfoil is moveable between a first position and a second position to adjust a discharge airflow cross-sectional area of the gas turbine engine.

Abstract: A turbofan engine includes a fan variable area nozzle, which includes a louver system having a multiple of slats generally transverse to the engine axis. Each of the louver slats are pivotally mounted to the fan nacelle to vary the effective area of the fan nozzle exit area and permit efficient engine operation at predefined pressure ratios.

Abstract: An example core nacelle for a gas turbine engine includes a core cowl positioned adjacent an inner duct boundary of a fan bypass passage and having a pocket and an airfoil received within the pocket. The airfoil is moveable between a first position and a second position to adjust a discharge airflow cross-sectional area of the gas turbine engine.

Abstract: A turbofan engine includes a fan variable area nozzle having an axial overlapped nozzle assembly with a first fan nacelle section and a second fan nacelle section movably mounted relative the first fan nacelle section. The second fan nacelle section axially slides forward along the engine axis relative the fixed first fan nacelle section to change the effective area of the fan nozzle exit area.

Abstract: A turbofan engine includes a fan variable area nozzle having a rotationally overlapped nozzle assembly having a first tab section and a second tab section rotationally mounted relative to the first tab section. The rotationally overlapped nozzle assembly changes the physical area and geometry of the bypass flow path during particular flight conditions.

Abstract: A turbofan engine includes a core nacelle housing a spool having a turbine. A turbofan is arranged upstream from the core nacelle and is coupled to the spool. A fan nacelle surrounds the turbofan and core nacelle. A bifurcation supports the core nacelle relative to the fan nacelle and extends radially between the nacelles. The core and fan nacelles provide a bypass flow path receiving bypass flow from the turbofan. In the example, the nacelles provide a fixed nozzle exit area. The bifurcation includes an inlet that is in communication with a passage. The passage is selectively opened and closed by a valve to provide air from the inlet to a vent opening near the nozzle exit area. By opening the valve, the nozzle exit area is effectively increased to provide increased bypass flow through the turbine engine.

Abstract: The present invention relates to a bleed deflector for a gas turbine engine. The bleed deflector comprises an inlet portion for receiving bleed air from the engine, a perforated top plate for discharging the bleed air into a duct, and an aerodynamically shaped strut for positioning the perforated top plate above an inner wall of the duct to allow dilution air to flow beneath the top plate.

Abstract: The present invention relates to a bleed deflector for a gas turbine engine. The bleed deflector comprises an inlet portion for receiving bleed air from the engine, a perforated top plate for discharging the bleed air into a duct, and an aerodynamically shaped strut for positioning the perforated top plate above an inner wall of the duct to allow dilution air to flow beneath the top plate.