A composite material elongate structural member (102), such as a spar or stringer, for use in an aerospace structure, comprises a web (108) having an angled portion, for example in the form of a chamfer (107), which joins a foot (106) of the member to the rest of the web. A first surface (110) on the foot is shaped to abut a structure (104) to be stiffened. The foot has a second surface (112) opposite the first surface. The web has a third surface (114) and a fourth surface (116) at the same layer in the composite material as the first and third surfaces, respectively. In the interposed portion there is a fifth surface (130) which joins the first and third surfaces. The geometry of the member may vary along its length (L) so that with increasing distance, the first surface is displaced towards the second surface,wherby the thickness between the first and second surface remains substantially constant, as the width of the fifth surface decreases.
IMPROVEMENTS IN ELONGATE COMPOSITE STRUCTURAL MEMBERS
PERFECTIONNEMENTS APPORTES A UN ELEMENT STRUCTUREL COMPOSITE ALLONGE
2016-10-04
Patent
Electronic Resource
English