Abstract: The disclosure relates to an electrical machine that includes: a stator that forms a cylindrical inner face; a rotor configured to rotate inside the stator about a longitudinal axis that defines an axial direction, the rotor forming a cylindrical outer face; and an air gap formed between the cylindrical outer face of the rotor and the cylindrical inner face of the stator. Apparatuses and mechanisms are provided for providing an air flow in the air gap, wherein the air flow flows in and/or counter to the axial direction in the air gap. The disclosure also relates to methods for cleaning an air gap in an electrical machine.

Abstract: An automated method for influencing a gust load of an aircraft is provided. A torque at least of an electromotive thrust generating unit arranged on a wing of the aircraft is modified such that a root bending torque of the wing generated by the gust load is reduced. An associated apparatus, an aircraft, a computer program product, and a computer-readable medium for carrying out the method are also provided.

Abstract: An electric drive system includes at least one electric drive unit. The at least one electric drive unit includes an electric motor and inverters that are each supplied with DC voltage via a high-voltage bus. The electric drive system includes a main battery system that has a plurality of battery modules that supply DC voltage to each of the high-voltage buses. The electric device system includes a plurality of reserve batteries. A separate reserve battery is provided for each high-voltage bus. The drive system is configured to make a change to the supply of DC voltage when a corresponding control signal is present for each of the high-voltage buses. A change is made from a supply of DC voltage of the battery module of the main battery system that is assigned to the high-voltage bus to a supply of DC voltage of the reserve battery assigned to the high-voltage bus.

Abstract: An electric drive system includes at least one electric drive unit. The at least one electric drive unit includes an electric motor and inverters. The inverters are each supplied with DC voltage via a high-voltage bus. The electric drive system also includes a main battery system that has a plurality of battery modules that supply DC voltage to each of the high-voltage buses. The electric device system includes a plurality of reserve batteries. A separate reserve battery of the plurality of reserve batteries is provided for each high-voltage bus. The drive system is configured to make a change to the supply of DC voltage when a corresponding control signal is present for each of the high-voltage buses. A change is made from a supply of DC voltage of the battery module of the main battery system that is assigned to the high-voltage bus to a supply of DC voltage of the reserve battery assigned to the high-voltage bus. A method for supplying DC voltage of a reserve battery to a high-voltage bus is also provided.

Abstract: The invention relates to an automated method for influencing a gust load of an aircraft (6), wherein the torque (MI) at least of an electromotive thrust generating unit (1) arranged on a wing (4) of the aircraft (6) is modified such that the root bending torque (M2) of the wing (4) generated by the gust load is reduced. The invention also relates to an associated apparatus and an aircraft and a computer program product and a computer-readable medium for carrying out the method.