Blar i NTNU Open på forfatter "Hann, Richard"

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    • UAV Icing: A Unified Icing Severity Index Derived from Performance Degradation 

      Cheung, Michael; Hann, Richard; Johansen, Tor Arne (Chapter, 2022)
      A problem that unmanned aerial vehicles (UAV) operators face when dealing with in-flight icing conditions is a reliable way to assess icing severity risk. This paper aims to develop an icing severity index that looks at ...

    • UAV icing: Development of an ice protection system for the propeller of a small UAV 

      Müller, Nicolas Carlo; Løw-Hansen, Bogdan; Borup, Kasper Trolle; Hann, Richard (Journal article; Peer reviewed, 2023)
      Atmospheric icing, also called in-flight icing, is a common hazard for the operation of uncrewed aerial vehicles (UAVs). With the background of a growing commercial and military market of small and medium-sized drones and ...

    • UAV Icing: Ice Accretion Experiments and Validation 

      Hann, Richard (Journal article; Peer reviewed, 2019)
      Atmospheric icing is a key challenge to the operational envelope of medium-sized fixed-wing UAVs. Today, several numeric icing codes exist, that all have been developed for general aviation applications. UAVs with wingspans ...

    • UAV Icing: Ice Shedding Detection Methods for an Electrothermal De-Icing System 

      Løw Hansen, Bogdan; Hann, Richard; Johansen, Tor Arne (Chapter, 2022)
      Among the identified problems with unmanned aerial vehicles (UAVs), especially with the medium-sized fixed-wing UAVs, is a lack of mature ice protection systems (IPSs). One of the emerging UAV ice protection technologies ...

    • UAV Icing: Icing Cases for Validation of Path Planning Method 

      Cheung, Michael; Hann, Richard; Johansen, Tor Arne; Stovner, Bård Nagy (Peer reviewed; Journal article, 2023)
      As part of the complete solution to deal with atmospheric in-flight icing on unmanned aerial vehicles (UAV), a path planner is a valuable tool for finding an optimal path for accomplishing UAV missions. When considering ...

    • UAV Icing: Intercycle Ice Effects on Aerodynamic Performance 

      Wallisch, Joachim; Hann, Richard (Peer reviewed; Journal article, 2023)
      Atmospheric in-flight icing poses a challenge to all aircraft including unmanned aerial vehicles (UAVs). Aircraft should avoid icing conditions unless they have ways of mitigating the negative effects of icing, e.g., if ...

    • Unsettled Topics in Unmanned Aerial Vehicle Icing 

      Hann, Richard; Johansen, Tor Arne (Research report, 2020)

    • Wind Estimation with Multirotor UAVs 

      Meier, Kilian; Hann, Richard; Skaloud, Jan; Garreau, Arthur (Peer reviewed; Journal article, 2022)
      Unmanned Aerial Vehicles (UAVs) have benefited from a tremendous increase in popularity over the past decade, which has inspired their application toward many novel and unique use cases. One of them is the use of UAVs in ...