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How strong do UAV wings need to be?

Posted by Oliver on February 22, 2012 at 1:38am

Hi Guys,

 

 

I was reading a spec for a commercial UAV and it stated that the design was capable of +/- 6G. I also noted that some catapault launchers generate a 15G load on launching.

 

Does anybody have an idea of the kind of G forces you see in hobby UAV flying? I was wondering what kind of loads the foam wings could take. Do you think a 6G loading on the wings necessitates making wings from carbon fibre or similar?

 

 

Ollie

 

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Replies

  • Ehren February 22, 2012 at 8:39am

    I use simple rules:

    30% of material strength at 10g loading on all three axis

    Simple fast easy math good baseline.

    We have reduced weight (minimullay) by going to 30% at 6g;  however we developed fatigue cracks in certain areas.

    So there is no easy answer. depends on material, application, loading, service life, and what you had for breakfast. :) 

     

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