Fan module impeller, and jet turbine engine equipped with such an impeller

A turbojet engine fan module wheel, having an axial direction, a radial direction and a circumferential direction, an upstream face and a downstream face, the wheel comprising a plurality of blades made of fiber-reinforced organic-matrix composite material, each blade of the plurality of blades having a root assembled with a base distinct from the bases of other blades of the plurality of blades, each of the respective bases having a groove extending axially and opening out on a side of the upstream face and/or on a side of the downstream face, each of the respective roots cooperating by axial interlocking in a form-fitting manner, optionally in a shape of a dovetail, with the respective grooves of the respective bases, whereby the respective root is retained on the respective base along the radial direction and the circumferential direction, and each of the respective bases cooperates with at least one part configured to axially block the respective root within the respective groove of the respective base, whereby each respective root is retained along the axial direction, wherein the blades are fixed pitch blades, each of the respective bases cooperating with an upstream part configured to axially block each respective root within each respective groove of each respective base towards the side of the upstream face and a downstream part configured to axially block each respective root within each respective groove of each respective base towards the side of the downstream face.