Scaling to custom-sized turbomachine airfoil method

A method of engineering a turbomachine airfoil, the method comprising:

• providing a master airfoil configuration having a preset outer radius and a preset inner radius relative to an axis of rotation thereof;
• radially scaling the master airfoil configuration to a custom-sized turbomachine airfoil having at least one of:
• an outer radius different than the preset outer radius of the master airfoil configuration and an inner radius different than the preset inner radius of the master airfoil configuration;
• axially scaling the master airfoil configuration to the custom-sized turbomachine airfoil while maintaining a pitch -to-axial width ratio from the master airfoil configuration in the custom-sized turbomachine airfoil;
• tuning a frequency of the custom-sized turbomachine airfoil by changing a parameter of at least one of a part span shroud and a tip shroud;
• and
• employing the custom-sized turbomachine airfoil in the turbomachine without performing wheel box testing,
• wherein the master airfoil configuration has known operational characteristics and the custom-sized turbomachine has substantially similar operational characteristics.