Accession Number : ADD002064

Title :   Non-Penetrating RIB-to-Surface Structural Clip Connector Assembly.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Bigham,Carroll R ; Barrie,Ronald E

Report Date : 18 Nov 1975

Pagination or Media Count : 4

Abstract : The patent relates to a connector assembly adapted for use in structurally forming an airfoil, without the use of skin surface penetrating fasteners to join the chordwise disposed ribs to the airfoil skin surface. The connector assembly includes: a plurality of ridges (or knobs) on the inner surface of the airfoil skin; a plurality of flanges (or surface stiffeners), also on the inner surface of the airfoil skin, and interposed between the ridges; and, a plurality of trihedral angle-like configurated clips, one each of which is snugly fitted or wedged between one of the flanges and the adjacent ridge. The connector assembly eliminates the present day necessity of penetrating the airfoil skin with holes and fasteners; and, thereby, eliminates or significantly reduces the stress concentration, and greatly improves the fatigue life, the weight, and the cost factors involved.

Descriptors :   *Skin(Structural), *Connectors, *Patents, Aircraft, Airfoils, Wing boxes, Fastenings, Flanges

Subject Categories : Aircraft
      Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE