Stiffener end with staggered slopes and panel with such stiffener end

摘要

The stop has an initial slope (3) inclined from a current height (H) until an intermediate point (A). A flat zone (4) is arranged from the point parallel to an upper side of a base skin (1) of a panel to be stiffened and is extended to a predetermined length (L). A final slope (5) following the zone is terminated in a point (B). The length of the flat zone is three times that of the height (H). An independent claim is also included for a primary panel structure for an aircraft.