Solar aeromodelling

Solar DR1 RC solar airplane kit — the first Italian RC aircraft flying on solar power alone, with no propulsion battery. SunPower back-contact monocrystalline cells power the brushless motor directly. Built and sold since 2017. Supplied to universities and aeronautical research institutes.
Wingspan 51.2 in (130 cm) · Weight 17.6 oz (500 g) · Wing loading <15 g/dm² · 20 SunPower cells in 20S configuration · Motor, ESC, servos, propeller and illustrated manual included.