US 12,258,875 B2
Airfoil for a turbofan engine
Trevor Howard Wood, Clifton Park, NY (US); and Kishore Ramakrishnan, Rexford, NY (US)
Assigned to General Electric Company, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Mar. 27, 2024, as Appl. No. 18/618,081.
Application 18/618,081 is a division of application No. 17/828,112, filed on May 31, 2022, granted, now 11,965,425.
Prior Publication US 2024/0263565 A1, Aug. 8, 2024
Int. Cl. F01D 25/04 (2006.01); B64D 33/02 (2006.01); F01D 5/14 (2006.01); F01D 5/18 (2006.01); F01D 9/04 (2006.01); F02K 1/82 (2006.01); G10K 11/16 (2006.01)
CPC F01D 25/04 (2013.01) [F01D 5/141 (2013.01); F01D 5/145 (2013.01); F01D 5/18 (2013.01); F01D 9/041 (2013.01); F02K 1/827 (2013.01); G10K 11/16 (2013.01); B64D 2033/0226 (2013.01); F05D 2240/121 (2013.01); F05D 2250/184 (2013.01); F05D 2260/96 (2013.01); F05D 2260/961 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An airfoil defining a spanwise direction, a chordwise direction, a root end, a tip end, a leading edge end, and a trailing edge end, the airfoil comprising:
a leading edge extending from the leading edge end;
a body extending along the spanwise direction between the root end and the tip end, the body comprising a plurality of cavity walls defining a plurality of cavities, each of the plurality of cavities having an inlet located at the leading edge; and
a porous face sheet positioned on at least one inlet of the plurality of cavities, wherein the porous face sheet is a plurality of porous face sheets,
wherein the airfoil defines a pressure side and a suction side,
wherein the plurality of porous face sheets include a plurality of first side porous face sheets located on the pressure side of the airfoil and a plurality of second side porous face sheets located on the suction side of the airfoil; and
wherein the plurality of porous face sheets alternate between the plurality of first side porous face sheets and the plurality of second side porous face sheets along the spanwise direction of the airfoil.