3509. Airframe Wingbox Preliminary Design and Weight Prediction
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Paper
Abstract
Currently Collier Research is evaluating the performance of many panel
concepts for highly loaded, commercial transport wingbox structures.
Software development is taking place as well as many new commercial
contracts to further the effort. Simultaneously the HyperSizer commercial
software is being used world-wide on many commercial aircraft for the
analysis and design sizing of composite and metallic aircraft structures. This
paper focuses on trade studies performed on an aircraft wingbox structure.
The wingbox is modeled after a commercial transport jet. The loads on the
upper and lower wing skin surface are axially compression paired with high
shear loading caused by wing twist. Weight trends are quantified considering
all possible design possibilities in order to determine the most structurally
efficient combination of composite layups and panel cross section dimensions
to achieve the lightest weight. Included are results obtained with HyperSizer
for Metallic Integral Blade and Bonded Zee Stiffened panel concepts as well
as Composite Hat and Tee Stiffened panel concepts. The HyperSizer
optimum designs have scored based on the weight maturity level (WML) of
the panel design. The study shows the composite hat stiffened panel is the
lightest concept for a wingbox structure and is 30% lighter than the lightest
metallic design.
