Design and analysis of air launched fire-extinguishing devices

被引：0

作者：

Rocha H. ^{[1
]}

Campos T. ^{[2
]}

Gamboa P. ^{[1
]}

机构：

[1] Centre for Mechanical and Aerospace Science and Technologies C-MAST, University of Beira Interior, Rua Marquês d’ Ávila e Bolama, Covilhã

[2] Aerospace Sciences Department, University of Beira Interior, Covilhã

来源：

CEAS Aeronautical Journal | 2024年 / 15卷 / 04期

关键词：

Air-launched device aerodynamics; Fin-stabilized device; Fire-extinguishing ball; Firefighting; Trajectory prediction; Wildfires;

D O I：

10.1007/s13272-024-00735-9

中图分类号：

学科分类号：

摘要：

Wildfires are an enormous source of human and environmental loss. Unmanned aircraft systems and fire-extinguishing balls (FEB) might help combat wildfires in their early stages of development. This paper addresses the design of FEB-based fire-extinguishing devices. The viability of four configurations for the device is evaluated. Trajectory simulations were performed using a six-degrees-of-freedom model. The device configurations’ static aerodynamic coefficients were obtained through computational fluid dynamics (CFD) and dynamic coefficients obtained through analytical methods. CFD results indicate that a tube-like tail has a transient behaviour in the tested speeds, and a conical tail is a suitable way to streamline the FEB. The trajectory simulations were compared to flight tests using a replica of the device. Trajectory results highlight the importance of mean wind velocity and direction and correct estimation of launching height and speed to accurately predict the point of impact. The flight tests validated the used trajectory prediction model. © Deutsches Zentrum für Luft- und Raumfahrt e.V. 2024.

引用

页码：849 / 865

页数：16

共 59 条

[1]

Mansoor S., Farooq I., Kachroo M., Mahmoud A.E.D., Fawzy M., Popescu S., Alyemeni M., Sonne C., Rinklebe J., Ahmad P., Elevation in wildfire frequencies with respect to the climate change, J. Environ. Manag, (2022)

[2]

Vilar L., Herrera S., Tafur-Garcia E., Yebra M., Martinez-Vega J., Echavarria P., Martin M.P., Modelling wildfire occurrence at regional scale from land use/cover and climate change scenarios, Environ. Model. Softw, (2021)

[3]

Marques S., Borges J.G., Garcia-Gonzalo J., Moreira F., Carreiras J.M.B., Oliveira M.M., Cantarinha A., Botequim B., Pereira J.M.C., Characterization of wildfires in Portugal, Eur. J. For. Res, 130, 5, pp. 775-784, (2011)

[4]

Carvalho A., Flannigan M., Logan K., Gowman L., Miranda A., Borrego C., The impact of spatial resolution on area burned and fire occurrence projections in Portugal under climate change, Clim. Change, (2009)

[5]

Costa L., Thonicke K., Poulter B., Badeck F., Sensitivity of Portuguese forest fires to climatic, human, and landscape variables: subnational differences between fire drivers in extreme fire years and decadal averages, Reg. Environ. Change, 11, 3, pp. 543-551, (2011)

[6]

Borunda A., How fires in Europe are fueled by climate change. National Geographic., (2018)

[7]

Green M., How fires in Europe are fueled by climate change, Reuters., (2020)

[8]

IPMA admite que é cada vez mais difícil prever risco de incêndio, PÚBLICO., (2019)

[9]

Firefighting drones infographic, Dronefly, (2018)

[10]

Aydin B., Selvi E., Tao J., Starek M., Use of fire-extinguishing balls for a conceptual system of drone-assisted wildfire fighting, Drones, (2019)

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