Turbine blade with mistake proof feature and corresponding assembly

摘要

A turbine blade (24) includes a platform (32), an airfoil (34) located on one side of the platform (32), and a base (36) located on an opposite side of the platform (32). The base (36) includes an attachment portion (40) that is receivable in a blade retention slot (54) of a turbine disk (46) and a shelf (48) located outside the turbine disk (46). The shelf (48) includes a mistake proof feature (62) that projects from an outer surface (66) of the shelf (48).