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Juan Jin, Seunghan Kim and Jiwon Moon
Korean forests are highly vulnerable to forest fires, which can severely damage property and human life. This necessitates the establishment of a rapid response system and the construction of firebreaks to prevent the spread of fires and protect key faci...
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Lukasz Wielebski and Beata Medynska-Gulij
This article presents the results of research on users concerning six thematic maps made with various mapping techniques and related to various aspects of the activities of the Helicopter Emergency Medical Service. The aim of the survey was to determine ...
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Erdem Emin Maras, Kadir Dönmez and Yeliz Emecen
First responders to forest fires, especially in areas that cannot be reached by land, are carried out by helicopters. In large forest lands, the necessity of helicopters to reach fire areas in the shortest time reveals the importance of heliport location...
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Marek Ce?kovic, Martin Schrötter, Róbert Hunady, Pavol Kurdel and Natália Gecejová
A helicopter in flight can be considered an unstable dynamic system with many unwanted vibrations originating from multiple sources, such as the operation of the engines and individual components. These vibrations cause the degradation of the structural ...
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Renguo Yang, Yadong Gao, Huaming Wang and Xianping Ni
In order to further reduce the vibration level of helicopters, the active vibration control technology of helicopters has been extensively studied. Among them, individual blade control (IBC) independently applies high-order harmonics to each blade with a...
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Antonio Carlo Bertolino, Matteo Gaidano, Stefano Smorto, Paolo Giovanni Porro and Massimo Sorli
Vibrations generated by the main rotor-gearbox assembly in a helicopter are the principal cause of damage to cockpit instruments and crew discomfort in terms of cabin noise. The principal path of vibration transmission to the fuselage is through the gear...
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Yanming Mu, Xiangying Hou and Xueming He
Gear vibration becomes unmanageable under extreme conditions, which shortens the time between overhauls of the helicopter reducer and affects the service efficiency of helicopters. For this purpose, an active precontrol strategy for shape and performance...
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Guoqiang Li, Qing Wang, Qijun Zhao, Guoqing Zhao, Fei Feng and Linxin Wu
The environment for the shipboard landing and takeoff of helicopters is extremely complex and significantly affects their safe flight. To address the intricate characteristics of the flow field during these operations, a simulation method suitable for ro...
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Xiancheng Gu, Linghua Dong, Tong Li and Weidong Yang
An active rotor with trailing-edge flaps (TEFs) is an effective active vibration control method for helicopters. Blade flapping dynamic characteristics have a significant effect on the active vibration control performance of an active rotor. In this stud...
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Zeyang Wang, Jun Huang and Mingxu Yi
Unmanned aerial helicopters (UAHs) have been widely used recently for reconnaissance operations and other risky missions. Meanwhile, the threats to UAHs have been becoming more and more serious, mainly from radar and flights. It is essential for a UAH to...
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