LEparagliding 2.47.1 version "Utah" (2016-04-01) ---------------------------------------------- Especial thanks to Scott Roberts and Fluid Wings for supporting the new version of the program. - High accuracy: In last row of the section 5. SKIN TENSION, of the main data file leparagliding.txt, now is possible set the following parameters to achieve high accuracy: 1000 1.0 First number "1000" (integer) is only a convention than signifies force the program to use maximal precision, reformating panels to achieve accuraccy better than 0.001 mm (lengths differences beetween rib and panels at lesft and right). Second number is a coefficient (real) between 0.0 and 1.0 that sets the intensity of the correction. If coefficient is set to "0.0" then is no correction. If the coefficient is set to "1.0" the accuracy is maximal, aprox < 0.001 mm. In version 2.47.1 maximal accuracy still not implemented in intrados panels, but very easy to implement. - Induced distorsion solved (accuracy better than 0.1 mm). See final report in file lep-out.txt - If first parameter is set to integer < 1000 (tipically 15 or 20) then program uses the old "anticorrection" method, for reformatting inner side of the right side of extrados panels. It is not recommended (old feauture). But now is possible use xndif=0.0 (not correction). - Leading edge shape of the last panels is improved (fixed an error in the calculation of angles). Now it is not necessari to correct manually! :) - Calculus of center of gravity planform, cdgx, is corrected (code error), thanks to Larry (WY), for detect it reading the code. - Resolved graphical inconsistencies when drawing open or closed cells found in 2D drawings, and in 3D model, found by Larry (WY), and now solved - WARNING: In this version, is changed the meaning and interpretation of the boolean coefficients ("0" and "1"), used to define open or closed cells (in .txt data file SECTION 2, fifth column). In versions prior to 2.46 "1" means open cell next to the rib "i" and towards the wing tip. A the 2.46 version, open cell "1" or closed "0" are defined toward the center of the wing. It is very easy and practical to do a test, and see the result. This change allows to define the central cell and resolves some inconsistencies in the previous definition. - Output file "lep-out.txt" improved with more clear and detailed information - Brake lines moved to plan number 19, next the lines list. - Lines "B" changed color from "yellow" (2) to "orange" (30), better for print - Internal code: cleaned up some unused variables - New GNU/Linux versions compiled using fort77 in Debian 8.3 "Jessie" - Window versions compiled in 32-bit system, is verified that also work in 64-bit - Versions not stopped. Working hard in more improvements... Improvements version 2.41 "Omsk" (2015-09-19): ------------------------------------------------ - Attachements points marks in intrados panels - Increased number of ribs with color marks, from 20 to 100 (per side) - Now possible draw color marks also in intrados panels - Now is possible define and draw trailing edge "miniribs" ("minicabs") in non "ss" paragliders: Simpli define minirib length (in %) in column number 8 of section "2. AIRFOILS". If column 8 values are "0" or "1", miniribs are not draw and these values used only in "ss" paragliders, according manual. Improvements version 2.40 (2015-09-04) over version 2.35 - Equilibrium grafic calculus, now is OK (bug fixed, thanks to Yuri!) - Equidistance beetwen points in rib intrados now OK (bug fixed, thnaks to Scott) - V-ribs "type 3" now possible - V-ribs "type 5" new type "full continous diagonal rib" includes parabolic and elliptical holes (very especial thanks to Scott for supporting leparagliding developement) - In lep-out.txt output file added summary of ribs and panel lenghts differences Preprocessor 1.2 version "Gurzuf" - More info written in the output file (area, span)