“…Additionally, by using an autopilot system to the aircraft, it is possible to work anywhere in the world [4]. Thus, the solar-powered aircrafts can be employed as an ideal communication platform and are especially suitable for the high-altitude, longendurance (HALE) missions, such as border surveillance [5], forest fire fighting, ground tracking [6], precision agriculture [7] and even the future exploration of Venus [8,9] and Mars [10,11].…”