Well, I have been hesitating befoe to post the following question, as it is a NASA workpaper I am a bit shy regarding the issue: in the workpaper...
Hi In order to make a beach cat spar with carbon, I don't know which of these 2 carbon fibers will best fit the spar? In this project...
Hi, With the following link, you can find an interesting article which states that infused TPT using C-Ply with shallow angle (20°) provides...
Hi Everybody, In order to make a unique seamless carbone tube, The cost effective solution (autoclave compatible) could be to wrap UD around a 90...
Hi Being a rookie in FEA or structural engineering, I guess the following question might look a bit candid, so please, be indulgent. In the...
Hi Everybody, The split tips is one option, among others which aims to reduce the induced drag of lifting surfaces. You can find a lot of research...
Hi, Most of my problem is in the title of this thread. My purpose is to investigate if there is any "mandrel technology" which make possible a...
Happy New year Everybody, Regarding High Performance Sailing(HPS), especially the foilers (Moth &A-Cat): Sails have seen their apparent wind...
Hi everybody, I d like to calculate some I-Beam/UD Carbon stifness. But I am totally rookie with structural engineering & FEA That is why...
Hi Everytbody, Trying to dig a little more into tip vortices & induced drag I would like to know if some more recent workpapers, than the...
Hi Everybody, As presented in the title, I wonder how to calculate the loads on the third element of a wing sail. I could find some info in...
Hi Everybody, In addition to Michlet FreeShip and XFOIL, imho, it would be interesting to identify a similar freeware for structural...
Happy New Year Everybody, A new toy for the new year: After a C:/ problem on my laptop, I had to reload XFLR5 and incidentaly I discovered a...
Hi Everybody, Thanks Mr Lazauskas for posting 26th ITTC report. I was very interested by Chapter 2.4 regarding the added resistancce in waves....
Hi Everybody, First of all I d like to post a link as a support for discussion:...
Hi Everybody and Happy New Year if not too late. After basic centerboards and rudders lift calculations, it appears that for light cat like F18...
Hi Everybody, Working on my wing project on a scale 1 blue-print, for the hound, I am a bit embarrassed with the mast rake as it seems to be...
Hi Everybody, Usually I am more involved in Fluid Mechanics, materials properties are a mysteriuous area for me, but I have to understand some...
Hi everybody, On some other forums, the new Nacra 20 carbon is the subject of dedicated threads. It is not my purpose as I dont sail this...
Hi Everybody, Sailing a pretty new A-Cat in 15 to 20 knts wind speed, with true wind at 90°. I observed that at high speed, if you pull or push...