Unmanned Glider May Hold Secret To Perpetual Flight...
Engineers from the Australian Centre for Field... ...ng on an autopilot system for gliders that senses thermals and adjusts its course, utilizing the thermal cur... ...nd lower speed air currents to keep it aloft when thermals aren't readily available, and perpetual flight mi...
https://www.neatorama.com/2011/07/05/unmanned-glider-may-hold-secret-to-perpetual-flight/
