Movable leading-edge flap with multiple force flow paths

Movable leading-edge flap for aircraft comprising an aerodynamic part as well as at least one rail system for driving and guiding this movable flap, the flap also comprising means for mechanically connecting the aerodynamic part on a front end portion of the drive and guide rail system,

• wherein the drive and guide rail system includes two rails each extending over the entire length of the rail system, an intermediate reinforcement provided with a toothed drive track being housed between the two rails in a stacking direction according to which these three separate elements are pressed against one another, the stacking direction corresponding to the spanwise direction of the movable flap,
• wherein rail-fastening elements allow each rail to be fastened to the intermediate reinforcement, and, preferably, pass through each of the two rails as well as the intermediate reinforcement,
• wherein said means for mechanically connecting the aerodynamic part are fastened on a front end portion of each of the two rails, and
• wherein each of the two rails has an overall C-shaped cross-section, with the two Cs arranged back-to-back and their recesses open in the spanwise direction.