Gusts Encountered by Flying Vehicles in Proximity to Buildings
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...
| Những tác giả chính: | , , , , |
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| Định dạng: | Bài viết |
| Ngôn ngữ: | English |
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MDPI AG
2022-12-01
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| Loạt: | Drones |
| Những chủ đề: | |
| Truy cập trực tuyến: | https://www.mdpi.com/2504-446X/7/1/22 |
| _version_ | 1827626674190024704 |
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| author | Abdulghani Mohamed Matthew Marino Simon Watkins Justin Jaworski Anya Jones |
| author_facet | Abdulghani Mohamed Matthew Marino Simon Watkins Justin Jaworski Anya Jones |
| author_sort | Abdulghani Mohamed |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-09T12:59:56Z |
| format | Article |
| id | doaj.art-8b5556968f504c6b8209fc6775def838 |
| institution | Directory Open Access Journal |
| issn | 2504-446X |
| language | English |
| last_indexed | 2024-03-09T12:59:56Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Drones |
| spelling | doaj.art-8b5556968f504c6b8209fc6775def8382023-11-30T21:55:11ZengMDPI AGDrones2504-446X2022-12-01712210.3390/drones7010022Gusts Encountered by Flying Vehicles in Proximity to BuildingsAbdulghani Mohamed0Matthew Marino1Simon Watkins2Justin Jaworski3Anya Jones4School of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaSchool of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaSchool of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaMechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015, USADepartment of Aerospace Engineering, University of Maryland, College Park, MD 20742, USAThere 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.https://www.mdpi.com/2504-446X/7/1/22turbulencegustUAVurbanseverelimitation |
| spellingShingle | Abdulghani Mohamed Matthew Marino Simon Watkins Justin Jaworski Anya Jones Gusts Encountered by Flying Vehicles in Proximity to Buildings Drones turbulence gust UAV urban severe limitation |
| title | Gusts Encountered by Flying Vehicles in Proximity to Buildings |
| title_full | Gusts Encountered by Flying Vehicles in Proximity to Buildings |
| title_fullStr | Gusts Encountered by Flying Vehicles in Proximity to Buildings |
| title_full_unstemmed | Gusts Encountered by Flying Vehicles in Proximity to Buildings |
| title_short | Gusts Encountered by Flying Vehicles in Proximity to Buildings |
| title_sort | gusts encountered by flying vehicles in proximity to buildings |
| topic | turbulence gust UAV urban severe limitation |
| url | https://www.mdpi.com/2504-446X/7/1/22 |
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