Abstract: A fixed coaxial shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A plurality of first splines is formed in an exterior surface of the body adjacent the first end and a plurality of second splines is formed in the exterior surface of the body adjacent the second end. The plurality of first splines and the plurality of second splines are substantially identical. The body of the shaft has an outer diameter of about 0.640±0.0005 inches (1.626±0.0013 centimeters), an inner diameter of about 0.517±0.010 inches (1.313±0.0254 centimeters), and an overall length of about 2.678±0.005 inches (6.802±0.0127 centimeters).

Abstract: A fixed shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A first flange and a substantially identical second flange are integrally formed with the body of the shaft adjacent the second end. The second end of the body has an outer diameter of 0.990±0.005 inches (2.515±0127 cm). The first and second flange each have an axial length parallel to a longitudinal axis of the body of about 0.085±0.010 inches (0.216±0.0254 cm). The first and second flange having an outer diameter of 1.359 inches (3.452 cm). The first flange and the second flange are separated by from one another by a distance of about 0.3162 inches (0.8031 cm). The portion of the body between the first flange and the second flange has an outer diameter of about 1.2013 inches (3.051 cm).

Abstract: A variable shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A first flange and a substantially identical second flange are integrally formed with the body of the shaft adjacent the second end. The first flange and the second flange each have an axial length parallel to a longitudinal axis of the body of about 0.085±0.010 inches (0.216±0.0254 cm). The first flange and the second flange have an outer diameter of 1.359 inches (3.452 cm). The first flange and the second flange are separated by from one another by a distance of about 0.3162 inches (0.8031 cm). A portion of the body between the first flange and the second flange has an outer diameter of about 1.2013 inches (3.051 cm).

Abstract: A free-surface liquid transfer apparatus for rotating machinery includes a stationary member. The stationary member includes a main surface configured to align to a rotating member, a landing surface arranged around the main surface configured to receive and slow a continuous film of working fluid transferred from the rotating member, an annular gap arranged around the landing surface, and a hollow torus cavity arranged proximate the annular gap configured to receive the slowed continuous film of working fluid transmitted through the annular gap.

Abstract: A core for an electric machine includes a core component having a plurality of core teeth defining a plurality of core slots between adjacent core teeth of the plurality of core teeth. The plurality of core slots are receptive of one or more windings. A coolant flowpath through the core component is formed through at least one core tooth. The at least one core tooth has one or more coolant tube banks and one or more mixing chambers arranged in an alternating pattern along the at least one core tooth.

Abstract: An immersion cooled motor controller assembly is disclosed that includes a sealed housing, a fluorocarbon cooling liquid contained in the sealed housing, and an AC/AC motor controller disposed in the sealed housing and submerged in the fluorocarbon cooling liquid, wherein the AC/AC motor controller includes a power board module adapted and configured to operate at power levels greater than 30 kW.

Abstract: An inductor comprises a ferromagnetic core, a litz wire conductor encircling the ferromagnetic core, a housing, a bobbin, a conductive pin, and a seal assembly. The housing encloses the ferromagnetic core and the litz wire conductor. The conductive pin is conductively attached to the litz wire conductor, and extends therefrom to form an external electrical contact. The bobbin supports the litz wire conductor and positions the conductive pin in alignment with an aperture in the housing which is sealed against fluid egress by the seal assembly.

Abstract: An inductor comprises a ferromagnetic core, a litz wire conductor encircling the ferromagnetic core, a housing, a bobbin, a conductive pin, and a seal assembly. The housing encloses the ferromagnetic core and the litz wire conductor. The conductive pin is conductively attached to the litz wire conductor, and extends therefrom to form an external electrical contact. The bobbin supports the litz wire conductor and positions the conductive pin in alignment with an aperture in the housing which is sealed against fluid egress by the seal assembly.

Abstract: An inductor comprises a ferromagnetic core, a plurality of conductor turns encircling the ferromagnetic core, a bobbin, and a wave spring. The bobbin encloses the ferromagnetic core and supports the plurality of conductor turns and the wave spring is situated between the bobbin and the ferromagnetic core.

Abstract: A core for an electric machine includes a core component having a plurality of core teeth defining a plurality of core slots between adjacent core teeth of the plurality of core teeth. The plurality of core slots are receptive of one or more windings. A coolant flowpath through the core component is formed through at least one core tooth. The at least one core tooth has one or more coolant tube banks and one or more mixing chambers arranged in an alternating pattern along the at least one core tooth.

Abstract: A free-surface liquid transfer apparatus for rotating machinery includes a stationary member. The stationary member includes a main surface configured to align to a rotating member, a landing surface arranged around the main surface configured to receive and slow a continuous film of working fluid transferred from the rotating member, an annular gap arranged around the landing surface, and a hollow torus cavity arranged proximate the annular gap configured to receive the slowed continuous film of working fluid transmitted through the annular gap.

Abstract: An electric machine system includes a rotor core, a stator core disposed about the rotor core, an electric machine housing coupled to the stator core, a holding-cylinder disposed between the electric machine housing and the stator core, a first flange coupled to the electric machine housing at a first end of the holding-cylinder and a second flange coupled to the electric machine housing at an opposite end of the holding-cylinder.

Abstract: A rotor disk of a vane compressor includes a multiple of slots along an outer diameter and a multiple of magnets along an inner diameter. Each of the multiple of slots is radially aligned with one of the multiple of magnets.

Abstract: An aircraft cooling system includes a refrigerant cycle including a first heat exchanger, a second heat exchanger, and a compressor. A component of the aircraft is in thermal communication with the first heat exchanger. A heat sink fluid passes through the second heat exchanger to absorb heat from the refrigerant cycle. A hydraulic motor is mechanically connected with the compressor and powered by the heat sink fluid, which is circulated by a pump.