Abstract: A bladed disk assembly includes a rotor disk having an axial dovetail slot, and a rotor blade having a dovetail disposed in the slot. A blade retainer is fixedly joined to the disk for retaining the dovetail in the slot. A spacer is disposed in the slot between the blade retainer and the dovetail and is selectively compressible for allowing the dovetail to slide in the slot toward the blade retainer for generating friction forces to dissipate energy upon impact of a predeterminedly sized foreign object.

Abstract: A slurry pump is provided having an impeller housing with an impeller chamber receiving an impeller having a rotation axis and a plurality of wedge-shaped pockets on a fluid engaging face. A fluid housing is adjacent to and cooperates with the impeller housing to form a fluid chamber adjacent the impeller. An input passage to the fluid housing is perpendicular to and offset from the rotation axis and links an exterior of the slurry pump to the fluid chamber to permit fluid to enter the pump. An output passage from the fluid housing links the fluid chamber to an exterior of the pump to permit fluid to exit the pump. A feedback input passage links the output passage back to the fluid chamber to permit a portion of the fluid exiting the pump to reenter the fluid chamber, thus creating a dynamic and continual prime. The fluid housing includes a circular wall member with an input passage eccentrically located relative to the circular wall member and the rotation axis of the impeller.