A method for manufacturing a propeller reduction gear, which includes measuring manufacturing defects of the casing; calculating a first angular play induced at each intermediate gear by the measured manufacturing defects; estimating a second angular play induced at each intermediate gear by deformations of the casing when the reduction gear transmits a threshold torque; calculating a total angular play from the first angular play and the second angular play; and selecting two intermediate gears with a phase difference that compensates for the total angular play.

A torsional vibration damping arrangement has an input-side connection component, an output-side connection component, a first torque transmission path arranged between the input-side connection component and the output-side connection component, a second torque transmission path arranged parallel to the first torque transmission path between the input-side connection component and the output-side connection component ( ), a phase shifter arrangement and a torque adjusting arrangement ( ). The phase shifter arrangement is arranged in the first torque transmission path or second torque transmission path and is configured to generate a phase shift of rotational irregularities guided via the first torque transmission path relative to rotational irregularities guided via the second torque transmission path. The torque adjusting arrangement is configured to change a torque transmission ratio between a first torque component which is transmitted via the first torque transmission path and a second torque component which is transmitted via the second torque transmission path.

A transmission system is disclosed, having a clutch module with an input and a first and a second output. Between the first output and the input, a first clutch device is present, and between the second output and the input a second clutch device is present. The transmission system further includes a transmission module having a first partial transmission and a second partial transmission, in which the two outputs of the clutch module are connected to the two inputs of the transmission module.

Transmission system (TS) comprising: a clutch module (CM) having an input (In) and a first and a second output (O1, O2), wherein between the first output and the input, a first clutch device (B, B1, C2) provided with first actuating means is present, and between the second output and the input a second clutch device (C, B2) with second actuating means is present, and a transmission module (TM), with an output (Out) and a first and a second input (i1, i2), wherein between the first input and the output, a first partial transmission provided with at least one transmission (VAR) is present, and between the second input and the output a second partial transmission provided with at least one further transmission or a mechanical connection is present, in which the two outputs (O1, O2) of the clutch module are connected to the two inputs (i1, i2) of the transmission module.

The transmission system further comprises a short-circuit clutch (S), which is present between the two outputs of the clutch module and/or the two inputs of the transmission module.

The transmission (VAR) inside the first partial transmission is continuously variable within a specified transmission range.

A method for manufacturing a propeller reduction gear, which includes measuring manufacturing defects of the casing; calculating a first angular play induced at each intermediate gear by the measured manufacturing defects; estimating a second angular play induced at each intermediate gear by deformations of the casing when the reduction gear transmits a threshold torque; calculating a total angular play from the first angular play and the second angular play; and selecting two intermediate gears with a phase difference that compensates for the total angular play.

Transmission system (TS) comprising: a clutch module (CM) having an input (In) and a first and a second output (O1, O2), wherein between the first output and the input, a first clutch device (B, B1, C2) provided with first actuating means is present, and between the second output and the input a second clutch device (C, B2) with second actuating means is present, and a transmission module (TM), with an output (Out) and a first and a second input (i1, i2), wherein between the first input and the output, a first partial transmission provided with at least one transmission (VAR) is present, and between the second input and the output a second partial transmission provided with at least one further transmission or a mechanical connection is present, in which the two outputs (O1, O2) of the clutch module are connected to the two inputs (i1, i2) of the transmission module.

The transmission system further comprises a short-circuit clutch (S), which is present between the two outputs of the clutch module and/or the two inputs of the transmission module.

The transmission (VAR) inside the first partial transmission is continuously variable within a specified transmission range.

An exemplary transmission system (TS) includes a clutch module (CM) having an input (In) and a first and a second output (O1, O2). A first clutch device (B, B1, C2) provided with a first actuator is present between the first output and the input, and a second clutch device (C, B2) with a second actuator is present between the second output and the input. The transmission system also includes a transmission module (TM), with an output (Out) and a first and a second input (i1, i2). A first partial transmission provided with at least one transmission (VAR) is present between the first input and the output, and a second partial transmission provided with at least one further transmission or a mechanical connection is present between the second input and the output. Two outputs (O1, O2) of the clutch module are connected to the two inputs (i1, i2) of the transmission module.