Product Announcement from IHS ESDU Structures – Update to ESDU 06021Strength of Lugs under Transverse LoadWith the ever-increasing need to reduce aircraft weight, engineers are looking more closely at even the simplest components to find weight savings without compromising safety and performance. One such component is the lug. As there are numerous lugs built in an airframe, many quite substantial, the potential for weight saving through reducing the size of lugs is significant.Lugs are most frequently used in aerospace structures to transfer load and to connect major structural components (e.g. elevator to tail plane, fuselage to landing gear). They tend to be highly loaded structural details used in the primary and secondary structures. As they are usually part of a single load path, they can be critical to structural integrity and performance. For this reason, methods to design, analyse accurately, and predict the failure of lugs are necessary.This Data Item provides data for use in determining the load to cause failure by rupture or maximum permissible permanent deformation of parallel-sided and tapered lugs under in-plane transverse loading.The data are provided in the form of two figures. They are applicable to round- and square- ended lugs made of ductile metallic materials.