Stress relieving mount for an axial blade

摘要

The present invention relieves the stress at a fillet of a blade shank using at least one axially extending pocket on the shank near an axially extending fillet of a shank to root interface or a shank to platform interface on a pressure or suction side of the blade and the pocket is axially shorter than the fillet. The stress relief pocket has a radially extending pocket width that is substantially wider than a fillet width between generally axially extending edges of the fillet wherein the pocket width may be several times wider than the fillet width. The wider pocket shields the fillet thereby reducing the stress concentration at the fillet.