Another question...are you planning on using carbon for the shear web? I seemed like such overkill that I opted for much cheaper fiberglass. According to my calculations a single layer of 7725 would be sufficient, but you need two layers of it to encapsulate the rods, and three near the root to incapsulate rods and load transfer bars, so it seemed like a fine choice to me.
From: Philip Lardner <This email address is being protected from spambots. You need JavaScript enabled to view it.>
To: This email address is being protected from spambots. You need JavaScript enabled to view it.
Sent: Friday, September 23, 2011 1:03 PM
Subject: [Carbondragonbuildersandpilots] Re: Wing calculations
Hi Folks,
I've just uploaded another few pages of wing calculations based on Jim Marske's Composite Design Manual. The uploads are in my directory (Phil Lardner) in the files section of this group - filenames 'Page 15' to 'Page 19'.
Page 15 is a 1:1 scale drawing of the main wing root-end metal fittings and form the basis of the calculations on the pages that follow on.
Page 16 - 19 detail the dimensions of the CF bars that transfer the cap loads (at +10.5g) to the root end metal fittings, and the dimensions and layout of the metal fittings themselves.
As ever, I would be most grateful if someone could double check my numbers and method to make sure I haven't skipped a step of misunderstood something... or generally screwed up somewhere!
Comment welcome,
Phil.
