A stator assembly and a center disk spindle double-rotor motor, includes a stator carrier and a winding core body; a through slot is formed in an end surface of the stator carrier in a penetrating manner; and the winding core body is arranged in the through slot. The center disk spindle double-rotor motor includes a transmission shaft, a stator assembly and rotor assemblies; the stator assembly is arranged on the transmission shaft; the transmission shaft can rotate relative to the stator assembly; the transmission shaft is fixedly provided with the rotor assemblies on two sides of the stator assembly. The whole center disk spindle double-rotor motor uses a double-rotor structure; and by means of the stator assembly of a specific structure, and in combination with the rotor assembly, the motor has beneficial effects of high efficiency, high power, large torque, low loss, light mass, good heat dissipation and the like.

A stator assembly and a center disk spindle double-rotor motor, includes a stator carrier and a winding core body; a through slot is formed in an end surface of the stator carrier in a penetrating manner; and the winding core body is arranged in the through slot. The center disk spindle double-rotor motor includes a transmission shaft, a stator assembly and rotor assemblies; the stator assembly is arranged on the transmission shaft; the transmission shaft can rotate relative to the stator assembly; the transmission shaft is fixedly provided with the rotor assemblies on two sides of the stator assembly. The whole center disk spindle double-rotor motor uses a double-rotor structure; and by means of the stator assembly of a specific structure, and in combination with the rotor assembly, the motor has beneficial effects of high efficiency, high power, large torque, low loss, light mass, good heat dissipation and the like.

A main field connection to connect to a main field winding has a semi-cylindrical portion with an axially thicker outer surface, an axially thinner inner surface, with an aperture. An extending portion extends from the semi-cylindrical portion to a remote extending end. The remote extending end extends for a first axial distance. The axially thicker portion of the semi-cylindrical portion extends for a second axial distance. A ratio of the first axial distance to the second axial distance is between 0.65 and 1.4. A rotating assembly, a generator and a method are also disclosed.

A main field connection to connect to a main field winding has a semi-cylindrical portion with an axially thicker outer surface, an axially thinner inner surface, with an aperture. An extending portion extends from the semi-cylindrical portion to a remote extending end. The remote extending end extends for a first axial distance. The axially thicker portion of the semi-cylindrical portion extends for a second axial distance. A ratio of the first axial distance to the second axial distance is between 0.65 and 1.4. A rotating assembly, a generator and a method are also disclosed.

An electric motor comprises a stator presenting a first surface. A rotor is rotatable relative to the stator. The rotor presents a rotor raceway disposed in spaced relationship with the first surface of the stator. The first surface of the stator defines a plurality of slots in spaced relationship with one another to define a plurality of spaced teeth between the slots. At least one electrical conductor is disposed in each of the slots and configured to selectively create a moving magnetic field for acting upon the rotor for providing rotational movement of the rotor. A portion of the at least one electrical conductor extends substantially into radial alignment with, or past the first surface of the stator to at least partially define a stator raceway of the stator for engaging the rotor raceway of the rotor during relative radial movement between the rotor and the stator.

A method of manufacturing a coil includes a preparation step of preparing a copper wire, a winding step of winding a plurality of aluminum wires around the copper wire, and a pressing step of pressing the copper wire and the plurality of aluminum wires so as to form an aluminum coat around the copper wire and form an anodized aluminum film on the surface of the aluminum coat.

A method of manufacturing a coil includes a preparation step of preparing a copper wire, a winding step of winding a plurality of aluminum wires around the copper wire, and a pressing step of pressing the copper wire and the plurality of aluminum wires so as to form an aluminum coat around the copper wire and form an anodized aluminum film on the surface of the aluminum coat.

An electric propulsion assembly for an electric aircraft propulsor including an integrated stator assembly including a mandrel having an outer cylindrical surface, an inner cylindrical surface, an upper edge, and a lower edge, the mandrel includes a plurality of electrically insulating guide walls disposed on at least a portion of the outer cylindrical surface and at least a portion of the inner cylindrical surface, wherein the electrically insulating guide wall forms a path across the outer and inner cylindrical surfaces. Assembly includes a plurality of copper windings wound upon the mandrel, electrically insulating epoxy, wherein the epoxy envelops at least a portion of the plurality of copper windings, a first cylindrical surface facing the inner cylindrical surface including a permanent magnet array, a second cylindrical surface facing the outer cylindrical surface including a back iron and a void disposed between the first cylindrical surface and the second cylindrical surface.

An electric propulsion assembly for an electric aircraft propulsor including an integrated stator assembly including a mandrel having an outer cylindrical surface, an inner cylindrical surface, an upper edge, and a lower edge, the mandrel includes a plurality of electrically insulating guide walls disposed on at least a portion of the outer cylindrical surface and at least a portion of the inner cylindrical surface, wherein the electrically insulating guide wall forms a path across the outer and inner cylindrical surfaces. Assembly includes a plurality of copper windings wound upon the mandrel, electrically insulating epoxy, wherein the epoxy envelops at least a portion of the plurality of copper windings, a first cylindrical surface facing the inner cylindrical surface including a permanent magnet array, a second cylindrical surface facing the outer cylindrical surface including a back iron and a void disposed between the first cylindrical surface and the second cylindrical surface.

The present invention relates to a rotor for an X-ray tube. In order to provide further possibilities for weight reduction in X-ray tubes for providing an increase of rotation frequency, a rotor (10) for an X-ray tube is provided, comprising a rotational structure (12) with a plurality of electrically conducting elements (14), the ends thereof connected to each other and provided such that an external stator magnetic field generated by a stator induces a current in the electrically conducting elements, which current generates a rotor magnetic field to interact with the stator magnetic field. At least the plurality of electrically conducting elements is made from carbon composite based material.