• Improvement of efficiency of a coaxial octodrone 

      Gysland, Sondre Andersen; Randeberg, Kjell Vistnes (Bachelor thesis, 2021)
      The goal of this thesis is to find the optimal coaxial configuration for Nordic Unmanned´s drone Staaker BG200. Research has shown that the parameters propeller spacing and diameter, are factors that have the greatest ...
    • Improvement of efficiency of a coaxial octodrone 

      Gysland, Sondre Andersen; Randeberg, Kjell Vistnes (Bachelor thesis, 2021)
      The goal of this thesis is to find the optimal coaxial configuration for Nordic Unmanned ́s drone Staaker BG200. Research has shown that the parameters propeller spacing and diameter, are factors that have the greatest ...
    • Investigation of Rotor Efficiency with Varying Rotor Pitch Angle for a Coaxial Drone 

      Giljarhus, Knut Erik Teigen; Apeland, Jørgen; Porcarelli, Alessandro (Peer reviewed; Journal article, 2022-04)
      Coaxial rotor systems are appealing for multirotor drones, as they increase thrust without increasing the vehicle’s footprint. However, the thrust of a coaxial rotor system is reduced compared to having the rotors in line. ...
    • Sensitivity Study of Design Parameters for a Fuel Cell Powered Multirotor Drone 

      Apeland, Jørgen; Pavlou, Dimitrios; Hemmingsen, Tor Henning (Peer reviewed; Journal article, 2021)
      The use of multirotor drones for industrial applications is accelerating, and fuel cell based propulsion systems are highlighted as a promising approach to improve endurance – one of the current main limitations. Due to ...
    • Suitability Analysis of Implementing a Fuel Cell on a Multirotor Drone 

      Apeland, Jørgen; Pavlou, Dimitrios; Hemmingsen, Tor (Peer reviewed; Journal article, 2020-05)
      Increased flight time of multirotor drones is a key enabler for further adoption and industrial use of drones. A model for analyzing the performance of a fuel cell hybrid system for a multirotor drone is presented and ...
    • Use of Fuel Cells to Extend Multirotor Drone Endurance 

      Apeland, Jørgen (PhD thesis UiS;, Doctoral thesis, 2021-10)
      Unmanned aerial systems can be used for a range of industrial applications to reduce risk, cost, and time. Fuel cell-based propulsion systems are outlined as a solution to extend mission endurance, one of the current main ...