Real sliders
Span, area, battery, cells, buoyancy, site and season.
Shape a solar-endurance aircraft with real sliders and read the verdict from a validated engine, which is the only source of the numbers.
It opens with sample data already in it. No sign-up.

Span, area, battery, cells, buoyancy, site and season.
Battery charge through 24 hours, wing polar, drag buildup and margins.
Download STL, DXF and a bill of materials.
