A hydraulic torque measurement device for an aircraft engine unit includes a hermetically sealed enclosure having a rigid wall and a deformable wall that define an internal volume. The device further includes at least one pressure measuring element capable of measuring the pressure prevailing in the internal volume. The hydraulic torque measuring device allows a service state in which the internal volume is filled exclusively with an incompressible liquid, and in which the deformable wall is configured to be subjected to a pressure force. In some embodiments, the hydraulic torque measurement device is suitable for use with a gearbox.

A torque monitoring device for a fastener is provided. The torque monitoring device includes a sensing element mounted within the fastener. The sensing element measures a value of fastener elongation. The torque monitoring device also includes a receiving element coupled to a torque machine. The receiving element is communicably coupled with the sensing element. The receiving element is configured to receive the value of fastener elongation from the sensing element. The receiving element is also configured to generate an alert for terminating a torque operation being performed by the torque machine when the value of fastener elongation exceeds a pre-set value of fastener elongation.

A torque monitoring device for a fastener is provided. The torque monitoring device includes a sensing element mounted within the fastener. The sensing element measures a value of fastener elongation. The torque monitoring device also includes a receiving element coupled to a torque machine. The receiving element is communicably coupled with the sensing element. The receiving element is configured to receive the value of fastener elongation from the sensing element. The receiving element is also configured to generate an alert for terminating a torque operation being performed by the torque machine when the value of fastener elongation exceeds a pre-set value of fastener elongation.

A hydraulic torque measurement device for an aircraft engine unit includes a hermetically sealed enclosure having a rigid wall and a deformable wall that define an internal volume. The device further includes at least one pressure measuring element capable of measuring the pressure prevailing in the internal volume. The hydraulic torque measuring device allows a service state in which the internal volume is filled exclusively with an incompressible liquid, and in which the deformable wall is configured to be subjected to a pressure force. In some embodiments, the hydraulic torque measurement device is suitable for use with a gearbox.