Slermalling = slope soaring + thermalling The X1 is the perfect glider for this type of flying. AUW 2.33Kg gives it mass to keep the airspeed up in good air but the X1 is so efficient at low speeds too when sink hits and you need to fly conservatively at low-sink-rate in cruise mode with a clean wing.
This summer, a team of researchers, engineers and a drone pilot of TU Delft traveled to an airbase in Germany for the first real test flight of the scaled flight model of the energy-efficient...
