Abstract: A turbine blade airfoil (32) with a center of mass (ACM) that is laterally offset from the center of mass (PCM) of a platform (42) to which the airfoil is attached. Respective offsets (da, dp) balance these centers of mass (ACM, PCM) about an attachment plane (64) of the blade root (30), providing balanced centrifugal loading on opposite lobes (51, 52) or other attachment surfaces of the root. The attachment plane (64) may be a plane of bilateral symmetry of the root, and/or it may include an attachment axis (65) that passes through the root center of mass (RCM) along a radius of rotation of the airfoil. The airfoil and platform centers of mass (ACM, PCM) may be dynamically balanced about the attachment axis (65) and/or the attachment plane (64).

Abstract: A turbocharger includes a first housing having a first annular surface and a second housing having a second annular surface. A projection defined integrally on the first annular surface. A recess is formed integrally on the second annular surface. The projection is disposed in the recess and engagement of the projection with the recess restrains rotation of the first housing with respect to the second housing.

Abstract: A turbine blade (110) is provided, where an exterior surface of the turbine blade (110) is exposed to a hot combustion gas (125) above a flow path line (141). The turbine blade (110) includes a trailing edge pin bank cooling channel (118) in an airfoil section (112), a cooling air supply channel (120) in a root section (114), and a channel (122) shaped with a radius of curvature (126), to extend the channel (122) across the flow path line (141) and interconnect the cooling air supply channel (120) to the trailing edge pin bank cooling channel (118). A width of the trailing edge pin bank cooling channel (118) is adjusted, such that the width at an inner diameter region (128) and an outer diameter region (131) is less than the width at an intermediate region (130) between the inner and outer diameter regions (128,131).

Abstract: A turbine blade airfoil (32) with a center of mass (ACM) that is laterally offset from the center of mass (PCM) of a platform (42) to which the airfoil is attached. Respective offsets (da, dp) balance these centers of mass (ACM, PCM) about an attachment plane (64) of the blade root (30), providing balanced centrifugal loading on opposite lobes (51, 52) or other attachment surfaces of the root. The attachment plane (64) may be a plane of bilateral symmetry of the root, and/or it may include an attachment axis (65) that passes through the root center of mass (RCM) along a radius of rotation of the airfoil. The airfoil and platform centers of mass (ACM, PCM) may be dynamically balanced about the attachment axis (65) and/or the attachment plane (64).