US 12,473,835 B2
Vane array structure with recessed stator vanes
Hien Duong, Mississauga (CA); and Vijay Kandasamy, Tamil Nadu (IN)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Feb. 20, 2024, as Appl. No. 18/582,174.
Claims priority of application No. 202311011509 (IN), filed on Feb. 20, 2023.
Prior Publication US 2024/0280030 A1, Aug. 22, 2024
Int. Cl. F01D 9/04 (2006.01)
CPC F01D 9/041 (2013.01) [F05D 2240/122 (2013.01); F05D 2240/80 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus for a gas turbine engine, comprising:
a vane array structure including a first platform, a second platform, a plurality of vanes and a flowpath extending longitudinally through the vane array structure, the first platform forming a first peripheral boundary of the flowpath, the second platform forming a second peripheral boundary of the flowpath, each of the plurality of vanes extending across the flowpath between the first platform and the second platform, and the plurality of vanes including a first vane and a second vane disposed longitudinally next to the first vane along the flowpath;
the first vane including a first airfoil and a first recess;
the first airfoil extending spanwise along a span line between a first end at the first platform and a second end at the second platform, the first airfoil extending chordwise along a chord line between a leading edge and a trailing edge, and the first airfoil extending laterally between a first side and a second side; and
the first recess projecting spanwise into the first airfoil from the first end, the first recess projecting chordwise into the first airfoil from the trailing edge, and the first recess extending laterally through the first airfoil between the first side and the second side,
wherein:
the first recess projects spanwise into the first airfoil to a recess end; and
the recess end has a compound geometry from the trailing edge to the first end, the compound geometry comprising at least two intersecting straight line segments and a recess height that is uniform chordwise along a portion of the first recess.