Tethered UAV with Combined Multi-rotor and Water Jet Propulsion for Forest Fire Fighting

Viegas, Carlos; Chehreh, Babak; Andrade, Jose Luis; Lourenço, João Carlos

doi:10.1007/s10846-021-01532-w

Cited by 25 publications

(15 citation statements)

References 22 publications

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“…UAVs offer innovative fire safety solutions, particularly for high-rises. For fire rescue in tall buildings, the Altair and Ikhana (Predator-B) UAVs were created by NASA [97] and the theoretical electric six-rotor aircraft by EAC Group [98]. Chinese engineers and researchers have also worked tirelessly on real-world UAV firefighting applications.…”

Section: Seek and Rescuementioning

confidence: 99%

Design Configuration and Technical Application of Rotary-Wing Unmanned Aerial Vehicles

Zhao¹,

Li²

2022

MITS

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Due to their advantages in hovering, takeoff and landing adaptability, maneuverability, and other factors, rotary-wing unmanned aerial vehicles (UAVs) are widely applied across many different fields. The UAVs' design and configuration can be quite flexible to fit diverse operation conditions. The major goal of innovations in rotary-wing UAVs is to lower operating risk and expense by optimizing payload and structure layout. This study examines three aspects of rotary-wing UAV design and evolution: the number and arrangement of rotors, hybrid-wing-based UAVs, and configuration and loading structures. The most current advancements of UAV applications in crucial industries, including agriculture, fire rescue, inspection and monitoring, and aerial logistics, are then thoroughly examined. Finally, the authors discussed the prospective uses for rotary-wing UAV design in the future.

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Section: Seek and Rescuementioning

confidence: 99%

Design Configuration and Technical Application of Rotary-Wing Unmanned Aerial Vehicles

Zhao¹,

Li²

2022

MITS

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“…In recent years, tethered systems combining an unmanned aerial vehicle (UAV) for search, rescue, transportation, etc. are developed 9 , 10 and it is believed that the scope of its use is expected to expand in the future. Such systems are used in offshore/marine exploration can across two different environments of different properties, for example, from a mother-ship in the air to an underwater payload in the sea 11 .…”

Section: Introductionmentioning

confidence: 99%

Numerical approach for flexible body with internal boundary movement

Ogawara

Kaczmarczyk

Terumichi

2023

Sci Rep

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In this paper, a numerical method is proposed for a flexible tether motion that spans two different environments and has large displacement and deformation. When considering the behavior of a tethered system in which the tether cable is subjected to the above conditions, variations of an internal boundary in the tether must be considered. In general, the absolute nodal coordinate formulation (ANCF), a nonlinear finite element method, is effective for the dynamic simulation of a flexible body with large displacement and deformation. However, in conventional methods, such as ANCF, the analysis accuracy decreases and the calculation cost increases when the movement of an internal boundary across different environments is considered. In this study, an efficient numerical approach that considers the variations of an internal boundary by using ANCF using variable-domain finite elements is proposed. In addition, to further improve the calculation efficiency, dimensionless variables are introduced using appropriate representative values. The accuracy of the numerical results obtained using the proposed method, which considers an internal variable boundary, is similar to that for a conventional method.

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“…Among various designs of UAVs, the multirotor design is most frequently used in UAVs due to its mobility, flexibility, and low cost. Multirotordesigned UAVs are used in various areas nowadays, such as aerial photography [1], forest fire monitoring [2], unmanned delivery [3], and agriculture [4].…”

Section: Introductionmentioning

confidence: 99%

Search-based motion planning algorithms for quadrotors

Gan

2023

International Conference on Artificial Intelligence and Industrial Design (AIID 2022)

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Motion Planning is an essential module for quadrotors, especially for automated navigation tasks. This paper introduces a search-based motion planning method for the quadrotor. The method can generate minimum time and smooth trajectory for quadrotors in a cluttered environment. The method explores the space with short-duration motion primitives based on obstacle information and dynamic constraints and generates an induced finite lattice discretization map. Then, the searchbased algorithm traverses through the map and returns a preferred trajectory. With the help of the heuristic function, the trajectory planning only takes a short time and is available for fast replanning during the flight. The performance of the proposed approach is evaluated using simulation and comparison with other state-of-art trajectory generation approaches.

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Tethered UAV with Combined Multi-rotor and Water Jet Propulsion for Forest Fire Fighting

Cited by 25 publications

References 22 publications

Design Configuration and Technical Application of Rotary-Wing Unmanned Aerial Vehicles

Design Configuration and Technical Application of Rotary-Wing Unmanned Aerial Vehicles

Numerical approach for flexible body with internal boundary movement

Search-based motion planning algorithms for quadrotors

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