aeroads(at)comcast.net Guest
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Posted: Thu Mar 13, 2008 5:27 pm Post subject: XL Stress Analysis |
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I'm a serial airplane builder/restorer currently working on a Maule rebuild not a Zenith. I have met Chris, greatly admire his work and will get to a Zenith. My day job is finite element structural analysis of nuclear power plant components. In the course of my Maule rebuild project, I did a finite element analysis of the Maule M7 and found that the airframe could structurally tolerate a gross weight increase from 2500 lbs to 2700 lbs in the FAR Part 23 normal category. A detailed finite element analysis can evaluate torsional stiffness, natural frequencies and every imaginable loading condition. It is easier to do a tube structure than a stressed skin, which will exhibit nonlinear buckling, but the process can, at the very least, provide relative comparisons of the bending and torsional capability of design changes say extra ribs, baggage bays, fuel mass, natural frequencies or a general comparison of the HD and XL wings. I’d personally be very interested in hearing from anyone with experience in finite element stress analysis applied to aircraft design and maybe the XL issue.
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