Abstract: A self-contained actuating magnetic pump (SCAMP) having an inlet valve and discharge valve, a piston, a compression cavity, an electromagnetic coil, a frame, and an armature to drive the piston. In one embodiment, the electromatic coils are isolated from the working fluid. In one embodiment, the SCAMP includes a housing that allows for thermal transfer from the electromagnetic coil to the working fluid. In one embodiment, the SCAMP includes a control unit that enables operation of the SCAMP in a power mode, a coast mode, and a retraction mode.

Abstract: A multiple channel diffuser having an annular shaped radial inlet and a tangential outlet, and a plurality of separated diffuser channels connecting the radial inlet to the tangential outlet such that a flow does not mix. A tap-off passage can be used to provide flow to a gas generator or a preburner. A cross-over passage can also be used to provide flow from a first diffuser to a second diffuser.