Hi Ed,
It was I that suggested the carbon frame covered in dacron. That could be "hyper light". I was wondering about your calculations. Could you share any info? Just curious.

I still believe it would be fairly simple for anyone to make carbon beams using graphlite rod and dow blue foam with a glass or carbon skin perhaps that converge into a carbon tube truss tail structure.

Kenny and Dan had some dialog that was very similar to what I was thinking with a keel and side beams. I had drawn up some sketches months ago but they aren't that great and I was kind of embarrassed to post a picture. But exactly what Dan and Kenny discussed.

To all,

An option also for some of the construction to make it simple for the every day man is old fashioned aluminum. Very thin though. Not for the fuselage but maybe D tubes similar to the video below. Perhaps integrate some graphlite rod in conjunction with.

That would be a lot easier than composite molds and layups etc.

This is a great video. The dialog at the end is cute.



Just tossing ideas out there.

Karl

--- In This email address is being protected from spambots. You need JavaScript enabled to view it., Edward Pickens wrote:
>
> The comment about this being an important brainstorming session was spot on. I know I have learned a lot and considered solutions that I may never have reached if I was going about this by myself. The other day it was mentioned to use carbon tube covered with dacron to make the fuselage. I did some basic calculations, and the weight savings are increadible. It also dropped the cost a very substantial amount for the fuselage. The issue now is the CG is too far forward for big guys even with a little forward sweep in the wings. I was wondering if anyone knew of a book that covers forward sweep in detail. Every text that I own only mentions a few lines about forward sweep, then moves on. I would really like to know what my limits are and how the structure needs to be changed to accomidate the new wing design. -Ed