LEparagliding Studio 0.2.1
LEparagliding Studio 0.2.1 — the wing's internal structure arrives in the 3D model.
A Qt 6 / Open CASCADE desktop port of Pere Casellas' LEparagliding 3.28 "Jardins" paraglider design program (GPL-3.0): the complete calculation engine, mechanically translated from Fortran and validated byte-for-byte against the original, wrapped in a modern design studio — with a full XFLR5 integrated for aerodynamic analysis of the wing you are designing.
What's new in 0.2.1
Diagonal ribs are now real surfaces. V-ribs, H-ribs and VH-ribs (section 12, all types including the percent variants) were missing from the exported STEP model — the original program only ever drew them as line segments in the 3D DXF, and most types not even that far into the OCCT model. Every row of the H/V rib table now becomes a named part ("V-rib 7", "H-rib 2", …) in the Diagonals assembly group, built as an exact ruled surface: both boundary curves interpolate every point the legacy engine computes, so the sheet follows the curvature of the top and bottom skin it attaches to, and every strap line of the original 3D output lies exactly on the face.
Trailing-edge mini-ribs join the model. The mini-ribs defined in section 2 (including full unloaded middle ribs at 100%) never existed in 3D at all — the original program only produces their 2D cutting patterns. They are now derived from the mid-cell section, cut at the configured percent of chord ahead of the trailing edge, and appear as surfaces under Ribs → Mini-ribs, sharing the rib color and visibility toggle in the Studio and in exported STEP assemblies.
Construction curves are now optional in STEP exports. A new Preferences checkbox (on by default) controls whether exported STEP files include the extrados/vent/intrados surface-wireframe curve groups. Suspension lines and part outlines are always exported, and the 3D preview keeps its curves either way. Headless users can pass --no-construction-curves to leparagliding-engine.
Downloads
| Platform | File | Install |
|---|---|---|
| Windows x64 | LEparagliding_v0.2.1_winx64.zip |
Unzip anywhere, run LEparagliding.exe (self-contained) |
| Linux x86-64 | LEparagliding_v0.2.1_linux-x86_64.AppImage |
chmod +x, then run — needs glibc 2.35+ (Ubuntu 22.04+, Debian 12+, Mint 21+) |
| macOS (universal) | LEparagliding_v0.2.1_macos-universal.dmg |
Drag to Applications; unsigned build — right-click → Open on first launch |