Low noise permeable airfoil
AssigneeGeneral Electric Company
InventorsPatrick Y. Ho, Philip R. Gliebe
Life of this patent
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Abstract
A stator airfoil is subject to wake fluid from rotor blades in a gas turbine engine. The airfoil includes a plurality of cross channels extending therethrough between opposite sides thereof for bleeding the wake fluid therebetween to reduce differential pressure thereacross and reduce noise.
Claims20
A stator airfoil subject to wake fluid from rotor blades in a gas turbine engine comprising:
- a leading edge, an opposite trailing edge, an inner root, an opposite outer tip, and opposite first and second sides extending therebetween;
- and
- a plurality of cross channels extending through said airfoil from said first side to said second side for bleeding said wake fluid therebetween to reduce differential pressure thereacross.
A method of reducing noise from wake fluid interaction between a row of rotor blades and row of stator airfoils comprising bleeding said wake fluid circumferentially through said airfoils from a first side thereof to an opposite second side to reduce differential pressure therebetween.
A stator airfoil including cross channels extending between opposite sides thereof for bleeding external fluid across said opposite sides to reduce differential pressure.
A stator airfoil comprising:
- opposite first and second sides extending between opposite leading and trailing edges;
- and
- a plurality of cross channels extending between said opposite sides for bleeding external fluid from said first side to said second side to reduce differential pressure thereacross.
Dependencies are inferred from the claim text.