A coupling includes first and second annular flanges in spaced relation across a gap. At least one resilient element is disposed in the gap in abutting relation to the first and second annular flanges. A first plurality of fasteners extends from the first annular flange, through the at least one resilient element, to the second annular flange, and a second plurality of fasteners extends from the second annular flange, through the at least one resilient element, to the first annular flange. Fasteners in the first plurality of fasteners is disposed in alternating fashion with fasteners in the second plurality of fasteners.

A coupling includes first and second annular flanges in spaced relation across a gap. At least one resilient element is disposed in the gap in abutting relation to the first and second annular flanges. A first plurality of fasteners extends from the first annular flange, through the at least one resilient element, to the second annular flange, and a second plurality of fasteners extends from the second annular flange, through the at least one resilient element, to the first annular flange. Fasteners in the first plurality of fasteners is disposed in alternating fashion with fasteners in the second plurality of fasteners.

A gas turbine engine rotor assembly comprises a torque tube, turbine stage and stiffening mass. The torque tube comprises a shaft extending from a forward location to an aft end, and a shaft fastening flange disposed at the aft end. The turbine stage comprises a disc, a disc adapter extending forward from the disc, and a disc fastening flange extending from the disc adapter and couplable to the shaft fastening flange at an interface. The stiffening mass is positioned proximate the interface to reduce operational stress in the torque tube. A method of reducing operational stress in a rotor assembly comprises de-stacking a rotor stack, separating a first stage rotor disc adapter from a torque tube, attaching a stiffening mass to an inner diameter of one or both of the disc adapter and the torque tube, attaching the disc adapter to the torque tube, and re-stacking the rotor stack.

A hub assembly for a hybrid module having a first and a second connection partner arranged coaxially with one another, the first connection partner has a first bearing portion and the second connection partner has a second bearing portion, and a plurality of connecting elements. The first and the second bearing portion have receiving openings for receiving the connecting elements. The first and the second connection partner are prepositioned with respect to one another via a form-fitting connection such that the receiving openings in the first and the second bearing portion are each oriented in pairs in a positionally correct manner with respect to one another in the circumferential direction about the main axis H.

A hub assembly for a hybrid module having a first and a second connection partner arranged coaxially with one another, the first connection partner has a first bearing portion and the second connection partner has a second bearing portion, and a plurality of connecting elements. The first and the second bearing portion have receiving openings for receiving the connecting elements. The first and the second connection partner are prepositioned with respect to one another via a form-fitting connection such that the receiving openings in the first and the second bearing portion are each oriented in pairs in a positionally correct manner with respect to one another in the circumferential direction about the main axis H.

A torque transmitting coupling assembly for a wind turbine configured to rotatably couple a first coupling part to a second coupling part, wherein the first coupling part and the second coupling part are configured to rotate about a longitudinal axis of the torque transmitting coupling assembly, wherein the torque transmitting coupling assembly includes a torque transmitting ring and a compression ring.

A modular pinion shaft that includes a tubular member having a first end and a second end, a first pinion gear member secured to the first end by a plurality of fasteners, and a second pinion gear member secured to the first end by a plurality of fasteners. Gear teeth of each of the pinion gear members are aligned by one or more indexing members disposed between the tubular member and each pinion gear member.

A modular pinion shaft that includes a tubular member having a first end and a second end, a first pinion gear member secured to the first end by a plurality of fasteners, and a second pinion gear member secured to the first end by a plurality of fasteners. Gear teeth of each of the pinion gear members are aligned by one or more indexing members disposed between the tubular member and each pinion gear member.

In a coupling structure for a propeller shaft and a propeller shaft, a propeller shaft-side adapter includes: a flange portion of the propeller shaft-side adapter extending in a radial direction relative to a rotation axis of a rotation shaft, and connected to a flange portion of a vehicle-side adapter; a center pin accommodating portion formed on the rotation axis, and into which a center pin provided to the vehicle-side adapter is inserted; and an inner peripheral portion formed between the flange portion of the propeller shaft-side adapter and the center pin accommodating portion in the radial direction relative to the rotation axis, which is opposed to the vehicle-side adapter in a direction of the rotation axis, and in which a distance from the rotation axis in the radial direction relative thereto decreases extending away from the flange portion of the vehicle-side adapter in the rotation axis direction.

In a coupling structure for a propeller shaft and a propeller shaft, a propeller shaft-side adapter includes: a flange portion of the propeller shaft-side adapter extending in a radial direction relative to a rotation axis of a rotation shaft, and connected to a flange portion of a vehicle-side adapter; a center pin accommodating portion formed on the rotation axis, and into which a center pin provided to the vehicle-side adapter is inserted; and an inner peripheral portion formed between the flange portion of the propeller shaft-side adapter and the center pin accommodating portion in the radial direction relative to the rotation axis, which is opposed to the vehicle-side adapter in a direction of the rotation axis, and in which a distance from the rotation axis in the radial direction relative thereto decreases extending away from the flange portion of the vehicle-side adapter in the rotation axis direction.