A guide vane optimized for fully reversible turbomachinery where the guide vane is substantially planar, and has a profiled first edge and an opposite symmetrical second edge. The profiled first edge may include a first arc and a second arc, where the first and second arc differ from one another in their shape characteristics (e.g., arc length, arc height, curvature, radius, etc.). The second edge may be symmetrically rounded. When the guide vane is disposed downstream from the impeller, the profiled first edge serves as a leading edge of the guide vane, and is configured to efficiently convert rotational flow coming from the impeller into axial flow. When the guide vane is disposed upstream from the impeller, the profiled first edge serves as a trailing edge of the guide vane, and is configured to maintain the axial flow as the flow enters the impeller.

A dual pump unit having a pair of pumps that provide parallel hydraulic paths, and are configured to operate concurrently in opposite rotational directions. The dual pump unit has a sealed casing which includes a suction flange, two volutes in hydraulically parallel configuration, and a discharge flange. The pair of pumps are located within a respective volute of the casing and, in an example, are radially inline and horizontally inline. The casing may include a flattened bottom. Each pump may include a touchscreen for configuration of the respective pump. The pumps are controllable to circulate a circulating medium to collectively provide output to source a load.

A CMC component for a gas turbine engine includes an airfoil including a leading edge, a trailing edge, a suction sidewall, and a pressure sidewall having a locally-thickened region, the locally-thickened region being a maximum thickness region of the pressure sidewall. The locally-thickened region has a first thickness, a maximum thickness region of the suction sidewall has a second thickness, and the first thickness is greater than the second thickness.