Abstract: A rotor assembly, especially for a gas turbine, includes at least a first rotor disc and a second rotor disc, the two rotor discs are arranged directly next to each other. The first rotor disc has a center through hole and the second rotor disc has no center through hole but a rotor disc center. A flow restrictor assembly which restricts the effective flow cross section of the center through hole of the first disc is used to control or to adjust the cooling air through gaps of a form-fitting torque transmitting device.

Abstract: An extruded aluminum electrical circuit component carrier on which at least one electrical circuit component is to be mounted. A first side portion and a second side portion include areas for mounting at least one first electrical circuit component part and at least one second electrical circuit component part. An inlet to which an inlet conduit for a cooling liquid can be connected. An outlet to which an outlet conduit for the cooling liquid can be connected. At least one supply passage for the cooling liquid formed through the first side portion. At least one return passage for the cooling liquid formed through the second side portion. The at least one supply passage is connected to the at least one return passage in series.

Abstract: An extruded aluminum electrical circuit component carrier on which at least one electrical circuit component is to be mounted. A first side portion and a second side portion include areas for mounting at least one first electrical circuit component part and at least one second electrical circuit component part. An inlet to which an inlet conduit for a cooling liquid can be connected. An outlet to which an outlet conduit for the cooling liquid can be connected. At least one supply passage for the cooling liquid formed through the first side portion. At least one return passage for the cooling liquid formed through the second side portion. The at least one supply passage is connected to the at least one return passage in series.