There is a growing desire to operate Uncrewed Air Vehicles (UAVs) in urban environments for parcel delivery, and passenger-carrying air taxis for Advanced Air Mobility (AAM). The turbulent flows and gusts around buildings and other urban infrastructure can affect the steadiness and stability of such air vehicles by generating a highly transient relative flow field. Our aim is to review existing gust models, then consider gust encounters in the vicinity of buildings as experienced by flight trajectories over the roof of a nominally cuboid building in a suburban atmospheric boundary layer. Simplified models of fixed- and rotary-wing aircraft are used to illustrate the changes in lift and thrust experienced by flight around the building. The analysis showed that fixed-wing aircraft experienced a substantial increase in angle of attack over a relatively short period of time (<1 s) as they fly through the shear layer at a representative forward velocity, which can be well above typical stall angles. Due to the slow flight speeds required for landing and take-off, significant control authority of rotor systems is required to ensure safe operation due to the high disturbance effects caused by localized gusts from buildings and protruding structures. Currently there appears to be negligible certification or regulation for AAM systems to ensure safe operations when traversing building flow fields under windy conditions and it is hoped that the insights provided in this paper will assist with future certification and regulation.


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    Titel :

    Gusts Encountered by Flying Vehicles in Proximity to Buildings


    Beteiligte:
    Abdulghani Mohamed (Autor:in) / Matthew Marino (Autor:in) / Simon Watkins (Autor:in) / Justin Jaworski (Autor:in) / Anya Jones (Autor:in)


    Erscheinungsdatum :

    2022




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    Gusts Encountered by MAVs in Close Proximity to Buildings

    Watkins, Simon / Mohamed, Abdulghani / Ol, Michael V. | AIAA | 2019


    Correction: Mohamed et al. Gusts Encountered by Flying Vehicles in Proximity to Buildings. Drones 2023, 7, 22

    Abdulghani Mohamed / Matthew Marino / Simon Watkins et al. | DOAJ | 2023

    Freier Zugriff

    Down Gusts

    Crowe, J.H. | Emerald Group Publishing | 1937


    Down gusts

    Crowe, J.H. | Engineering Index Backfile | 1937


    Cu-Nim gusts

    Brice, D.A. | Engineering Index Backfile | 1950