The SailMAV drone can fly and sail on water due to its foldable wings. Its special design also allows it to record wildlife behavior, as animals do not perceive the drone as a hostile intruder.
Gliding along quietly and still getting to your destination - research can be that simple. The ultralight SailMAV drone flies to remote waters and sails there quietly, saving energy. In this way, the small flying robot (Micro Aerial Vehicle, or MAV) can collect data on the biodiversity of, say, a remote alpine mountain lake or an Arctic fjord. "Water birds or mammals on the shore are not disturbed by SailMAV, so the drone can make unbiased statements about the effects of climate change on the state of the ecosystem, for example," explains André Farinha.
Farinha is one of the drone’s developers, a team of researchers from Empa’s Sustainability Robotics Laboratory in Dübendorf and the Aerial Robotics Laboratory at Imperial College London. Their challenge: to teach the sailing drone to fly, even though the design specifications for movements on the water and in the air are contradictory. Says Farinha, "We were finally able to optimize the aerodynamic properties after mathematical modeling and building a few prototypes so that SailMAV can actually sail on the water like a catamaran and fly with its wings wide open."
The researchers are now working on ensuring that SailMAV can also do this under real-world conditions in wind and weather. In future, SailMAV will also be equipped with more complex sensors that will allow the inconspicuous bird friend to fly and sail autonomously.