Structural integrity

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stephunk
Posts: 7
Joined: Sun Jun 04, 2017 10:20 am

Structural integrity

Post by stephunk » Wed Feb 07, 2018 6:02 pm

The fuselage is nearly complete, minus any metal parts - no landing gear, etc. How can I test the integrity of the build at this point? I'm satisfied that it is square where it should be, and level where it should be. The reinforcement pieces, plywood sides, etc. are in place. It's sitting on sawhorses. I've sat in it on the sawhorses, and it didn't break - that's a good thing. But, I'd feel much better if I knew it was airworthy to this point. It appears sturdy, but frankly, I don't know what "sturdy" means.

How can I test the work so far?

Thanks,

Stephen
Plano, Texas

Steve D
Posts: 50
Joined: Sun Mar 05, 2017 9:50 pm
Location: Grand Republic of Texas

Re: Structural integrity

Post by Steve D » Wed Feb 07, 2018 7:25 pm

Just to reassure you. I didn't find any Pietenpol accidents that were attributable to the fuselage or wing breaking in the safety study.

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taildrags
Posts: 277
Joined: Tue Mar 07, 2017 10:39 pm

Re: Structural integrity

Post by taildrags » Wed Feb 07, 2018 10:14 pm

Stephen;

If you build using the materials that are called for in the plans and if you employ best practices in the assembly, assuring yourself that you're mixing, applying, and curing your adhesives in accordance with the manufacturer's recommendations, that's about the best you can do to assure yourself that your construction is sound. Of course you could take your fuselage and support in on sawhorses or a table and load it with sandbags, but how many? In which orientation? To what shandard? By all means, make up some sample joints and clusters with wood scraps and gusset material and adhesive similar to one or more of what you've constructed on the actual fuselage, and then try pulling apart the glue joints, load them in bending and shear, and convince yourself that the assembly is satisfactorily joined together before proceeding.

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