Vane with pin mount and anti-rotation

A vane arc segment comprising:

• an airfoil fairing having first and second fairing platforms and a hollow airfoil section extending there between, the airfoil being subject to an aerodynamic load;
• a spar having a spar platform adjacent the first fairing platform and a spar leg that extends from the spar platform and through the hollow airfoil section, the spar leg having an end portion that is distal from the spar platform and that protrudes from the second fairing platform, the end portion having a clevis mount;
• a support platform adjacent the second fairing platform, the airfoil fairing transferring at least a portion of the aerodynamic load to the support platform, the support platform having a through-hole through which the end portion of the spar leg extends such that the clevis mount protrudes from the support platform;
• a pin extending though the clevis mount and locking the support platform to the spar leg such that the airfoil fairing is trapped between the spar platform and the support platform, the clevis mount including first and second prongs, the first prong having a pin hole, and the pin is disposed through the pin hole and cantilevered with respect to the first prong;
• a side of the through-hole defining a ledge and the spar leg including a stop that is complementary to the ledge, the support platform rotatable about the pin under the aerodynamic load received from the airfoil fairing, the stop bearing against the ledge and limiting rotation of the support platform.

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 vanes disposed about a central axis of the gas turbine engine, each of the vanes includes:
• an airfoil fairing having first and second fairing platforms and a hollow airfoil section extending there between,
• a spar having a spar platform adjacent the first fairing platform and a spar leg that extends from the spar platform and through the hollow airfoil section, the spar leg having an end portion that is distal from the spar platform and that protrudes from the second fairing platform, the end portion having a clevis mount,
• a support platform adjacent the second fairing platform, the support platform having a through-hole through which the end portion of the spar leg extends such that the clevis mount protrudes from the support platform, and
• a pin extending though the clevis mount and locking the support platform to the spar leg such that the airfoil fairing is trapped between the spar platform and the support platform, the clevis mount including first and second prongs, the first prong having a pin hole, and the pin is disposed through the pin hole and cantilevered with respect to the first prong.