Wishbone fiber layup structure for airfoil

A gas turbine engine comprising:

• a compressor section;
• a combustor in fluid communication with the compressor section;
• and
• a turbine section in fluid communication with the combustor, the turbine section having airfoils including:
• an airfoil wall circumscribing a cavity and defining a leading edge, a trailing edge, and pressure and suction sides that join the leading edge and the trailing edge, the airfoil wall including a wishbone-shaped fiber layup structure,
• the wishbone-shaped fiber layup structure including first and second arms that merge into a single leg,
• the first and second arms being comprised of a network of fiber tows,
• the single leg including fiber tows from each of the first and second arms that are interwoven, the single leg forming at least a portion of the trailing edge of the airfoil wall,
• each of the first and second arms including a first section that is distal from the single leg and a second section that is proximal to the single leg,
• the first section defining a first thickness and a first fiber tow count,
• the second section defining a second thickness that is greater than the first thickness and a second fiber tow count that is greater than the first fiber tow count, and
• the single leg defining a third thickness that is greater than the second thickness and a third fiber tow count that is greater than the second fiber tow count.

A woven fabric comprising:

• a wishbone-shaped fiber layup structure configured to form an airfoil, the wishbone-shaped fiber layup structure including first and second arms that merge into a single leg, the first and second arms for forming sides of the airfoil and the single leg for forming a trailing edge of the airfoil,
• the first and second arms being comprised of a network of fiber tows,
• the single leg including fiber tows from each of the first and second arms that are interwoven, the single leg forming at least a portion of the trailing edge of the airfoil wall,
• each of the first and second arms including a first section that is distal from the single leg and a second section that is proximal to the single leg,
• the first section defining a first thickness and a first fiber tow count,
• the second section defining a second thickness that is greater than the first thickness and a second fiber tow count that is greater than the first fiber tow count, and
• the single leg defining a third thickness that is greater than the second thickness and a third fiber tow count that is greater than the second fiber tow count.