초록 ▼

A gas turbine engine fan assembly has a plurality of axially swept fan exit guide vanes circumferentially disposed around an axially extending centerline, a plurality of fan frame struts having axially swept strut leading edges and circumferentially disposed around the centerline directly aft of the

A gas turbine engine fan assembly has a plurality of axially swept fan exit guide vanes circumferentially disposed around an axially extending centerline, a plurality of fan frame struts having axially swept strut leading edges and circumferentially disposed around the centerline directly aft of the exit guide vanes, and an axially extending annular gap between the trailing edges of the fan exit guide vanes and the strut leading edges. Each of the fan exit guide vanes has pressure and suction sides, vane trailing edges, and is circumferentially leaned such that the pressure side facing radially inward. Preferably, the axially swept vane trailing edges and the axially swept strut leading edges generally conform to each other in shape. An annular splitter is radially disposed at a spanwise position to split airflow from the fan into fan bypass airflow and core engine airflow and includes a splitter leading edge preferably positioned aft of the strut leading edges.

대표청구항 ▼

[What is claimed is:] [9.]an annular fan duct circumscribed about a centerline,an annular core engine inlet disposed axially aft of said fan duct,an annular fan bypass inlet disposed axially aft of said fan duct and radially outward of said core engine inlet,an annular splitter disposed radially bet

[What is claimed is:] [9.]an annular fan duct circumscribed about a centerline,an annular core engine inlet disposed axially aft of said fan duct,an annular fan bypass inlet disposed axially aft of said fan duct and radially outward of said core engine inlet,an annular splitter disposed radially between said fan bypass inlet and said core engine inlet,a plurality of axially swept fan exit guide vanes having axially swept vane trailing edges and circumferentially disposed around said centerline and within said fan duct with only an axially extending gap between said fan exit guide vanes and strut leading edges of said struts,a plurality of struts having axially swept strut leading edges, circumferentially disposed around said centerline, and disposed radially across said fan bypass inlet and said core engine inlet,said fan exit guide vanes comprising axially swept vane airfoils having pressure and suction sides, radially spanning outward across said fan duct from vane airfoil roots to vane airfoil tips, and extending axially aft from vane leading edges to said vane trailing edges, andsaid vane airfoils having a circumferential lean such that said pressure sides face radially inward.