초록 ▼

A variable area fan nozzle for a high-bypass gas turbine engine includes a first track slider movable relative to the hinge beam along a first interface. A second track slider is movable relative to the first track slider along a second interface that includes a bearing assembly. A VAFN cowl is moun

A variable area fan nozzle for a high-bypass gas turbine engine includes a first track slider movable relative to the hinge beam along a first interface. A second track slider is movable relative to the first track slider along a second interface that includes a bearing assembly. A VAFN cowl is mounted to the second track slider.

대표청구항 ▼

1. A variable area fan nozzle (VAFN) for a gas turbine engine comprising: a hinge beam;a first track slider movable relative to said hinge beam along a first interface between said hinge beam and said first track slider;a second track slider movable relative to said first track slider along a second

1. A variable area fan nozzle (VAFN) for a gas turbine engine comprising: a hinge beam;a first track slider movable relative to said hinge beam along a first interface between said hinge beam and said first track slider;a second track slider movable relative to said first track slider along a second interface between said first track slider and said second track slider that includes a bearing assembly, wherein said bearing assembly includes mechanical bearings; anda VAFN cowl mounted to said second track slider. 2. The variable area fan nozzle as recited in claim 1, wherein said second interface includes a male section of said second track slider and a female section of said first track slider. 3. The variable area fan nozzle as recited in claim 2, wherein said bearing assembly is mounted between said male section and said female section. 4. The variable area fan nozzle as recited in claim 3, wherein said male section is a semi-circle in cross section. 5. The variable area fan nozzle as recited in claim 4, wherein said bearing assembly include a multiple of ball bearings arranged in rows spaced about the circumference of the male section. 6. The variable area fan nozzle as recited in claim 1, wherein said bearing assembly include a multiple of roller bearings. 7. The variable area fan nozzle as recited in claim 6, wherein said VAFN cowl supports the second track slider which receives said multiple of roller bearings. 8. The variable area fan nozzle as recited in claim 1, wherein said gas turbine engine includes a bypass ratio greater than about ten (10). 9. The variable area fan nozzle as recited in claim 1, wherein said gas turbine engine includes an epicyclic gear train with a reduction ratio of greater than about 2.5. 10. The variable area fan nozzle as recited in claim 1, wherein said gas turbine engine includes a low pressure turbine with a pressure ratio greater than about five (5). 11. A nacelle assembly for a for a high-bypass gas turbine engine comprising: a core nacelle defined about an engine centerline axis;a fan nacelle mounted at least partially around said core nacelle to define a fan bypass flow path; anda variable area fan nozzle (VAFN) in communication with said fan bypass flow path, said variable area fan nozzle having a first fan nacelle section and a second fan nacelle section, said second fan nacelle section includes a VAFN cowl movable relative to said first fan nacelle section along a track assembly to vary a fan nozzle exit area and adjust fan bypass airflow, said track assembly comprises:a hinge beam fixed to said first fan nacelle section;a first track slider movable relative to said hinge beam along a first interface between said hinge beam and said first track slider;a second track slider movable relative to said first track slider along a second interface between said first track slider and said second track slider that includes a bearing assembly, wherein said bearing assembly includes mechanical bearings, said second track slider mounted to said VAFN cowl. 12. The assembly as recited in claim 11, wherein said first track slider supports a thrust reverser assembly. 13. The assembly as recited in claim 12, wherein said first track slider is independently movable relative said second track slider. 14. The gas turbine engine as recited in claim 13, wherein said gas turbine engine includes a bypass ratio greater than about ten (10). 15. The gas turbine engine as recited in claim 13, wherein said gas turbine engine includes an epicyclic gear train with a reduction ratio of greater than about 2.5. 16. The gas turbine engine as recited in claim 13, wherein said gas turbine engine includes a low pressure turbine with a pressure ratio greater than about five (5). 17. The assembly as recited in claim 11, wherein said second track slider includes a male section with a semi-circular cross section. 18. The assembly as recited in claim 17, wherein said bearing assembly include a multiple of ball bearings arranged in rows spaced about the circumference of the male section. 19. The assembly as recited in claim 11, wherein said bearing assembly include a multiple of roller bearings. 20. The assembly as recited in claim 11, wherein said second track slider moves relative to an axis that is generally parallel to the engine centerline axis. 21. A gas turbine engine comprising: a core engine defined about an axis;a gear system driven by said core engine;a turbofan driven by said gear system about said axis;a core nacelle defined at least partially about said core engine;a fan nacelle mounted at least partially around said core nacelle to define a fan bypass flow path; anda variable area fan nozzle (VAFN) in communication with said fan bypass flow path, said variable area fan nozzle having a first fan nacelle section and a second fan nacelle section, said second fan nacelle section includes a VAFN cowl movable relative to said first fan nacelle section along a track assembly to vary a fan nozzle exit area and adjust fan bypass airflow, said track assembly comprises:a hinge beam fixed to said first fan nacelle section;a first track slider movable relative to said hinge beam along a first interface between said first track slider and said second track slider;a second track slider movable relative to said first track slider along a second interface between said first track slider and said second track slider that includes a bearing assembly, wherein said bearing assembly includes mechanical bearings, said second track slider mounted to said VAFN cowl. 22. The engine as recited in claim 21, wherein said second track slider includes a male section with a semi-circular cross section. 23. The engine as recited in claim 22, wherein said bearing assembly include a multiple of ball bearings arranged in rows spaced about the circumference of the male section. 24. The engine as recited in claim 21, wherein said bearing assembly include a multiple of roller bearings.