A securing plate and aircraft structure

摘要

A securing plate (40) for clamping an end of a stringer(30) to a surface of an aircraft structure(1), wherein the plate is metallic and comprises a first recess (45). The first recess (45) is formed partially through the thickness of the plate (40). The first recess (45) is configured so that the thickness of the plate incrementally reduces towards an end of the plate by a plurality of plate steps. Also, an aircraft structure comprising a skin (20) having an inner surface, and a stringer extending in a longitudinal direction of the aircraft structure. The stringer (30) comprises a stringer foot (36) bonded to the skin inner surface and a web (32) extending from the stringer foot (36) and away from the skin inner surface. The aircraft structure further comprises a metallic securing plate overlying a portion of the stringer foot at an end of the stringer and which is attached to the skin.