Periodic stator airfoils
AssigneeGeneral Electric Company
InventorsDavid W. Crall, Steven R. Manwaring
Life of this patent
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Abstract
A stator includes a row of airfoils extending inwardly from a casing. The airfoils are spaced apart circumferentially from each other at a spacing varying in turn around the perimeter of the casing for reducing vibratory excitation of a downstream rotor stage.
Claims20
A stator configured for channeling inlet air through an inlet end of a gas turbine engine into a row of fan rotor blades, and comprising a row of airfoils extending radially inwardly from a casing for channeling said air to said fan rotor blades, and spaced circumferentially apart from each other at a periodic spacing varying in turn around the perimeter of said casing for reducing wake excitation of said fan rotor blades from said airfoils.
A fan frame comprising a row of struts extending radially between an outer casing and inner hub, and spaced circumferentially apart from each other at a periodic spacing varying in turn around the perimeter of said casing.
A fan frame comprising a row of aligned struts and vanes extending radially between an outer casing and an inner hub, and spaced circumferentially apart from each other at a periodic spacing varying in turn around the perimeter of said casing.
Dependencies are inferred from the claim text.