Drive system with integrated torque sensing device

A drive system for driving a movable flow body of an aircraft, comprising:

• a drive unit,
• a shaft having an axial support means,
• a torque sensing device,
• a no-back friction unit, and
• an axial bearing,
• wherein the drive unit is coupled with the shaft to rotate the shaft,
• wherein the torque sensing device is coupled with at least one of the drive unit and the shaft to detect a torque transferred from the drive unit into the shaft,
• wherein the no-back friction unit is disposed along a longitudinal axis of the drive system, entirely between the axial bearing and the axial support means of the shaft, such that an axial load of the shaft is supported by the axial bearing,
• wherein the no-back friction unit is configured to not counteract a rotation of the shaft in a first direction of rotation of the shaft and to apply a friction-induced additional torque to the shaft in an opposite second direction of rotation,
• wherein the no-back friction unit comprises a one-way clutch and a friction disc device having a first friction disc and a second friction disc in friction contact,
• wherein the one-way clutch and the friction disc device are designed to mutually rotate the first friction disc and the second friction disc with the one-way clutch in the first direction of rotation of the shaft, and to provide a relative rotation between the first friction disc and the second friction disc in the second direction of rotation.