Patent ID: 9145777
Filing Date: 2015-09-29
Classification: F01D,F04D,F05D

Abstract:
1. An article of manufacture comprising: a rotor blade configured for use with a turbomachine, the rotor blade configured for attachment to a rotor wheel, the rotor blade having a neck width, a platform length, a platform angle, a platform height, a tang height, a tang depth and a dovetail circumferential width, wherein the rotor blade is configured to substantially reduce the possibility of attachment with an undesired third component by modification of at least one characteristic of the rotor blade, so that the modification of the at least one characteristic is matched by a complementary characteristic of the rotor wheel, the at least one characteristic comprising at least one of, the neck width, the platform length, the platform angle, the platform height, the tang height, the tang depth and the dovetail circumferential width; and wherein the rotor blade has a nominal airfoil profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in a scalable table, the scalable table selected from the group of tables consisting of TABLES 1-11, wherein the Cartesian coordinate values of X, Y and Z are non-dimensional values convertible to dimensional distances by multiplying the Cartesian coordinate values of X, Y and Z by a number, and wherein X and Y are coordinates which, when connected by continuing arcs, define airfoil profile sections at each Z height, the airfoil profile sections at each Z height being joined with one another to form a complete airfoil shape, the airfoil shape lies in an envelope within at least one of, +/−5% of a chord length in a direction normal to an airfoil surface location, or +/−0.25 inches in a direction normal to an airfoil surface location.