US 11,725,522 B2
Airfoil with wishbone fiber structure
Jonas S. Banhos, Rocky Hill, CT (US); Kathryn S. Read, Marlborough, CT (US); Raymond Surace, Newington, CT (US); and Olivier H. Sudre, Glastonbury, CT (US)
Assigned to RAYTHEON TECHNOLOGIES CORPORATION, Farmington, CT (US)
Filed by RAYTHEON TECHNOLOGIES CORPORATION, Farmington, CT (US)
Filed on Jan. 15, 2021, as Appl. No. 17/149,944.
Prior Publication US 2022/0228496 A1, Jul. 21, 2022
Int. Cl. F01D 5/28 (2006.01); F01D 5/14 (2006.01); F01D 5/18 (2006.01)
CPC F01D 5/282 (2013.01) [F01D 5/147 (2013.01); F01D 5/18 (2013.01); F05D 2200/11 (2013.01); F05D 2240/301 (2013.01); F05D 2240/304 (2013.01); F05D 2250/75 (2013.01); F05D 2300/6033 (2013.01); F05D 2300/6034 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An airfoil comprising:
an airfoil wall defining a leading end, a trailing end, and pressure and suction sides that join the leading end and the trailing end, the airfoil wall including a wishbone-shaped fiber layer structure, the wishbone-shaped fiber layer structure including a pair of arms that merge into a single leg, the pair of arms being formed by first and second S-shaped fiber layers each of which is comprised of a network of fiber tows and each of which defines two inflection points, the first and second S-shaped fiber layers merging to form the single leg, wherein in the single leg at least one of the fiber tows from the first S-shaped fiber layer is interlaced with at least one of the fiber tows from the second S-shaped fiber layer, the single leg forming at least a portion of the trailing end of the airfoil wall.