Hi Paul, 1-The point of maximum camber If you have a jib then your wing section can probably be considered like a single foil with a ****;...
Being a little bit "Old School" I would split the question: Where is the position of the CoE? into 2 questions: 1-Longitudinal position of the...
Hi, Not exactly off topic, but a little bit border line question, so I apolgize in advance: Any suggestions for a freeware to address the...
Mikko, Thank you very much for sharing, in fact, in 2014, talking with P.I engineer at ENV, I knew you had made this research, but as I guessed...
Thanks for the precision, If not top-secret proprietary research, is the power around 0.60 in your power law ? I would understand it can be...
Re-reading former page, I realized you already mentioned 3D printing for the plug. I never imagined one could achieve a great finish with this...
Nicolas, For good accuracy, it is probably a good idea to get in touch with R/C F3B Gliders groups And as Germans used to be and still are...
AFAIR, the Ventilo 20, used to have a NACA 64A10 wing section for her high aspect ratio dagger board, probably with good reasons. Cheers
Nicolas IJERT-Analyzing Surface Textures on Elliptical Wings...
Nicolas, Regarding my tiny experience with XFLR5, I get a conclusion which is more an assumption than a true scientific observation: When I...
Sorry Alan, cannot comment as I have not read it seriously, if each of your post is a PhD thesis, we must prepare some beers before to log in, so...
You are perfectly right Phil, my purpose was more to focus on the ID as a squared function of lift and of course with the implicit assumption...
Guten Tag and Welcome to the forum Induced drag is probably more important than section drag, a centerboard planform with elliptical leading edge...
You might find interesting informations reading a the following Tom Speer's work paper: "Optimum Plan Form" Planforms (tspeer.com)
Your XFOIL simulation testifies on how separation is more important on a thin wing section compared to the thicker one (the yellow lines), but...
2 remarks: -I am afraid Ncrit 9 is not appropriate, should use NCrit=1 in order to consider the natural turbulence of wind. - Alpha=18° probably...
A Wing sail!!!! That is an interesting project. For XFOIL, I would have the following suggestion: Above 6 knts true wind speed, the Boundary...
Paul, As above-mentionned, it is very helpful to draw what it known as a "free body diagram" where forces & moments are balanced for a constant...
In fact I shoud have disclosed my starting point. My starting point was my candid attempt to make a kind of "reverse engineering" of the C-Cat...