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  • 14-Mar-2012 04:28 EDT

Vertical Picture-Frame Wing Jig Structure Design with an Eye to Foundation Loading

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The foundation of many production aircraft assembly facilities is a more dynamic and unpredictable quantity than we would sometimes care to admit. Any tooling structures constructed on these floors, no matter how thoroughly analyzed or well understood, are at the mercy of settling and shifting concrete, which can cause very lengthy and costly periodic re-certification and adjustment procedures. It is with this in mind, then, that we explore the design possibilities for one such structure to be built in Belfast, North Ireland for the assembly of the Shorts C-Series aircraft wings. We evaluate the peak floor pressure, weight, gravity deflection, drilling deflection, and thermal deflection of four promising structures and discover that carefully designed pivot points and tension members can offer significant benefits in some areas. However, when taken as a whole, a structure with moment-supporting corners and thermally independent upper and lower beams outperforms the other designs considered.

Presenter
Michael Carr, Electroimpact Inc.

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