Aeroelastic deformation, the reshaping of wings, tails, and even fuselages on aircraft subjected to the forces surrounding passage through the air, can be destructive, twisting and shaking aircraft surfaces. UAVOS, a company specializing in flight controls for drones of all sizes, has created a tandem-wing, tri-tailed High-Altitude Psuedo Satellite (HAPS) called ApusDuo. https://en.wikipedia.org/wiki/Aeroelasticity Wikipedia gives a long and involved discourse on aeroelasticity, but UAVOS gives a lighter, more graphic approach that shows the dangers involved, and UAVOS’ approach to conquering those perils. https://www.youtube.com/watch?time_continue=11&v=1YsloiRVEzs The firm makes three autopilots for varying sizes of aerial vehicles from those weighing less than 15 kilograms (33 pounds) to up to 1,500 kilograms (3,300 pounds). UAVOS craft include rotary-wing vertical takeoff and landing (VTOL) machines …