1487. Advanced Technology Wing Structure
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Paper
Abstract
A full scale structural wing box was fabricated and tested in this advanced development program. The designs were selected from candidate wing box concepts that were rated for cost, weight, technology improvement, damage tolerance, and the ‘abilities’. Development testing was conducted on this program and significant tests and test results are reviewed. Full-scale box testing included 2 lifetimes fatigue testing, and then installation of intentional flaws followed by damage tolerance testing to element failure. Residual strength test after the spar cap element failure demonstrated fail safe features of the design.
