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  1. P

    evaluate a new foil profile?

    I have attached a foil ".dat" file. I would like an independent evaluation as a foil and as a wing with a 5'5" (1651mm) chord anda 30' (9144mm) span. all you have to do is to rename it from Crow3.txt to Crow3.dat my evaluation has shown that at14 degree alpha the flow at the trailing edge...
  2. P

    Main wing construction help, please

    OK, I am not an engineer - I was a mechanic in the automotive / heavy equipment fields (some years of racing interests).In the design of a 30 foot wing with a 6 foot chord (rectangular and not swept) I would like to build the lightest wing I can and still have it rated to about 6g loading. The...
  3. P

    Old lurker making myself known

    Hi all! I have been reading the furum for a while and decided that I needed to register and become a participating member. I have not built any flying planes that one could ride in, mostly just flying models. I have been working on the design of an ultralight that will fly slow (14 mph stall)...
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