LOWER JOINTS BETWEEN OUTBOARD WING BOXES AND CENTER WING SECTIONS OF AIRCRAFT WING ASSEMBLIES

摘要

PROBLEM TO BE SOLVED: To provide lower joints of aircraft wing assemblies which allow different materials (e.g., aluminum alloys and composite materials) to be compatible with each other.SOLUTION: A lower joint 34 includes an outboard lower wing panel 26, a center lower wing panel 30, a rib, and a lower joint assembly that includes two outboard flanges 40, 42 operatively coupled to the outboard lower wing panel, an inboard flange 44 operatively coupled to the center lower wing panel, and an upper flange 46 operatively coupled to the rib. A lower joint assembly includes one or more splice plates 52, an upper T-fitting 56, and one or more intermediate plates 54. The outboard lower wing panel, the center lower wing panel, and the lower joint assembly are constructed substantially of different materials.