Inverse of the square root of 2. Or 0.707.
Applied at 90 deg, half of the cloth is redundant to stresses orientated
with weft or warp.
Duncan McF.
----- Original Message -----
From: "Fred Fillinger" <n3eu@comcast.net>
Sent: Sunday, January 15, 2006 7:25 PM
Subject: Re: Europa-List: Wing skin separation HELP
>
> Duncan McFadyean wrote:
>>
>> Merely reduces strength by 30%!
>> Would need to do another load test on the wing to confirm the effect.
>
> I guess you mean tensile strength of the tape + resin, not the whole
> structure, but I'd a guessed more than 30. However, there's stresses
> from several directions here -- up/down in Gs, aft in drag, and twist
> (flap and aileron). But as to G forces, she tested beyond 10Gs, so
> maybe now 9Gs due to the tape problem? Who knows. We need only 3.8G for
> utility category safety, though, but I understand the conundrum, is all.
>
> Reg,
> Fred F.
>
>
>
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