Patent ID: 8430759

Claim:
A torque tube for an aircraft, comprising: a composite tube, including: a body having a body interior diameter and a body exterior diameter and including an end having an edge, the body interior diameter and the body exterior diameter being substantially constant along the end of the body to the edge thereof; a wall thickness; and a set of helically-shaped grooves, each groove of the set of grooves passing through at least a portion of the wall thickness, each groove of the set of grooves beginning at the edge and ending in the body; and an end fitting comprising: a sleeve configured to mate with the body interior diameter; a set of ribs configured to mate with the set of helically-shaped grooves; and a sheath being integral with the sleeve and having a substantially constant sheath interior diameter configured to mate with the body exterior diameter, a portion of the body being sandwiched between the sleeve and the sheath.