• 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 ...