Posted by vincent123 |
Sep 18, 2016 @ 04:08 AM | 1,310 Views
Got a bit of work done.
The EDF is indeed a huge hole in the wing structure, hope my concept is strong enough.
I have 2 main carbon spars (white colored), reaching from the root till the wing droops down.
Carbon spar thickness is 3mm, which I will route in my CNC machine.
I calculated the strength of one carbon spar and it would sustain 13G.
The other spars (dark brown) is a 2mm plywood routed outline, also going from root spar till mid of the plane. It's a 2mm width and 7mm height spar, I know it's not so strong (can sustain only 0.8G). But I believe this is ok, as long as the main carbon spars do their job, no ?
The EDF sits in a sadle of the second carbon spar.
As I always do, I will burry the EDF in the wing and plank it to a close.
For maintenance the EDF, I will be able to take out the read EDF outlet part, of course I need to cut the planking. The rear outlet is then loosened with the same bolts which fastens the EDF in the sadle.
By doing this, I have a clean planking and with some little cuts I 'll manage to get the EDF out, some little cosmetic repairs and ... done.