In some examples, a cooling system includes a brake assembly defining a plurality of cooling channels. The brake assembly is configured to be positioned within a wheel cavity of a wheel. The cooling system includes a distributor configured to receive a flow of cooling fluid and supply the cooling fluid to the plurality of cooling channels. One or more cooling channels are configured to receive the cooling fluid and discharge the cooling fluid into the wheel cavity of the wheel. The cooling system may include a fan configured to provide the cooling fluid to the distributor.

The present invention relates to a disc brake caliper body comprising a mounting side bracket and a non-mounting side bracket extending along a circumferential direction of the body, each bracket being configured to hold at least one brake pad. In order to provide improved cooling efficiency while maintaining the required stability of the brake caliper, the caliper body further comprises at least one cooling duct formed by additive manufacturing, at least one cooling duct being an integral part of the caliper body.

A system for retarding a railcar having wheels. The system includes a brake and an actuator that moves the brake between a closed position in which the brake contacts the wheels of the railcar and an open position in which the brake does not contact the wheels of the railcar. The system further includes a hydraulic circuit through which a hydraulic fluid flows between the actuator and a reservoir. A first pump is operably connected within the hydraulic circuit and configured to provide the hydraulic fluid to the actuator for operating the brake. A heat exchanger is operably connected within the hydraulic circuit and configured to cool the hydraulic fluid flowing therethrough. A second pump is operably connected within the hydraulic circuit and configured to provide the hydraulic fluid to the heat exchanger. The heat exchanger prevents the hydraulic fluid within the hydraulic fluid from exceeding a target operating temperature.

A system for retarding a railcar having wheels. The system includes a brake and an actuator that moves the brake between a closed position in which the brake contacts the wheels of the railcar and an open position in which the brake does not contact the wheels of the railcar. The system further includes a hydraulic circuit through which a hydraulic fluid flows between the actuator and a reservoir. A first pump is operably connected within the hydraulic circuit and configured to provide the hydraulic fluid to the actuator for operating the brake. A heat exchanger is operably connected within the hydraulic circuit and configured to cool the hydraulic fluid flowing therethrough. A second pump is operably connected within the hydraulic circuit and configured to provide the hydraulic fluid to the heat exchanger. The heat exchanger prevents the hydraulic fluid within the hydraulic fluid from exceeding a target operating temperature.

A wheel and brake assembly comprising: a stator; a rotating assembly mounted around and rotatable relative to the stator about an axis A; a torque tube in fixed engagement with the stator; a stack of brake disks mounted about the torque tube, the stack of brake disks comprising alternate rotor disks and stator disks, the stator disks attached to the torque tube and the rotor disks attached to the rotating assembly; a brake actuator configured to, in response to a brake command, apply a pressing force on the stack of brake disks to cause frictional engagement between the rotor disks and the stator disks such that the stator disks prevent the rotor disks and, hence the rotating assembly, from rotating relative to the torque tube.

A coolant diverter system and method of controlling coolant flow are provided. The coolant diverter system includes a coolant diverter body having a coolant inlet opening, a driveline retarder outlet opening and a bypass outlet opening. The coolant diverter system also includes a valve positioned in the coolant diverter body. The valve is configured in a first valve orientation to fluidly couple the coolant inlet opening to the driveline retarder outlet opening in isolation from the bypass outlet opening. The valve is configured in a second valve orientation to fluidly couple the coolant inlet opening to the driveline retarder outlet opening and the bypass outlet opening. The coolant diverter system also includes a valve controller configured to place the valve in the first valve orientation in response to activation of a driveline retarder coupled to the driveline retarder outlet opening for braking.

A grommet for a heat shield may comprise a radially outward surface and a radially inward surface opposite the radially outward surface. A plug opening may be formed in the radially outward surface. An exterior radial surface may extend from the radially outward surface to the radially inward surface. A shield groove may be formed in the exterior radial surface. An inward protrusion may extend radially inward from the radially inward surface.

A grommet for a heat shield may comprise a radially outward surface and a radially inward surface opposite the radially outward surface. A plug opening may be formed in the radially outward surface. An exterior radial surface may extend from the radially outward surface to the radially inward surface. A shield groove may be formed in the exterior radial surface. An inward protrusion may extend radially inward from the radially inward surface.

An air cooled resistor arrangement comprising a first elongated tube member forming a first air flow channel and a second elongated tube member forming a second air flow channel, wherein the first elongated tube member is at least partly housed inside the second elongated tube member. The air-cooled resistor arrangement further comprises an air dilution portion comprising at least one opening at which the first air flow channel is arranged in fluid communication with the second air flow channel.

Thermal control system for aircraft main landing gear wheel wells and related methods are disclosed. An example thermal control system includes a conduit defining a fluid passageway between an inlet and an outlet. The inlet of the conduit positioned in fluid communication with a landing gear wheel well and the outlet of the conduit positioned in fluid communication with the atmosphere. The conduit generates a pressure differential through the fluid passageway between the inlet and the outlet to exhaust heat from the landing gear wheel well to the atmosphere.