Once upon a time, RC planes were expensive models that took months to build and big money to equip with electronics. Since the 20th century though, powerful batteries have become cheap ...

The next issue was that the expensive, 20% efficient solar panels are exceedingly fragile, so the hope was that hot-gluing them to the foam of the airplane would keep them safe, even in the case ...

With it's facade consisting of stabilized aluminium foam by Cymat ... the simple, elegant design consists of one plane with different openings being extruded solids and intruded voids.