Abstract: A multi-blade rotor (1), especially for a helicopter rear anti-couple propeller, includes a hub body (3) to which are connected twistable straps (11 to 17) each formed by two bundles (20) of fibers with a flattened cross section arranged radially around the hub (3), each of the bundles (20) forming at least two halves of different blades (11 to 17) and being twisted and curved in the region of its passage near the center of the hub body (2) in such a way that it forms a tangent to the circumference of the center of the hub body (3) along the greater dimension of its cross section.