John Hazel has informed me of a new site that just became available. It has all the old NACA/NASA technical reports on aeronautics-aerodynamics from the 1920's through 1970's. http://naca.larc.nasa.gov/reports Interesting stuff back in pre WW2 on planforms and handling, etc. BTW, John Hazel is in the middle of changing web address and cannot receive your email just now. He'll post his new email and site where you can DL his sailplane analysis spreadsheets soon! Dan deVries DEVRIES DESIGN, Inc. Product Design --+-- Patent/Litigation Graphics _______ _____________ |_______________ 0 [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]