Fatigue Reliability Design Method for Large Aviation Planetary System Considering the Flexibility of the Ring Gear by Ming Li, Yuan Luo, Liyang Xie

“…This paper takes the heavy helicopter planetary mechanism as the research object, and aims to improve the fatigue reliability level of the system. …”
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An Artificial Intelligence Approach for Gears Diagnostics in AUVs by Graciliano Nicolás Marichal, María Lourdes Del Castillo, Jesús López, Isidro Padrón, Mariano Artés

“…In fact, the study has been undertaken to determine these defects in a single propeller system of a small-sized unmanned helicopter. It is important to remark that although the study focused on this particular system, the obtained results could be extended to other systems known as AUVs (Autonomous Unmanned Vehicles), where the usage of polymer gears in the vehicle transmission is frequent. …”
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Data on the spatial distribution of 1,1-dimethylhydrazine and its transformation products in peat bog soil of rocket stage fall site in Russian North by Nikolay V. Ul'yanovskii, Dmitry E. Lakhmanov, Ilya I. Pikovskoi, Danil I. Falev, Mark S. Popov, Alexander Yu. Kozhevnikov, Dmitry S. Kosyakov

“…Soil samples were taken during a helicopter expedition to the “Koida” fall region of Plesetsk Cosmodrome operation zone in October 2015 at different distances from the center of the fall site and from different soil horizons. …”
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Overhead power line detection from aerial images using segmentation approaches by Satheeswari Damodaran, Leninisha Shanmugam, N.M. Jothi Swaroopan

“…While traditional methods, such as human patrols and helicopter inspections, have been longstanding practices for grid control by electrical power distribution companies, the emergence of Unmanned Aerial Vehicles (UAV) technology offers a more efficient and technologically advanced alternative. …”
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Observations of new particle formation in enhanced UV irradiance zones near cumulus clouds by B. Wehner, F. Werner, F. Ditas, R. A. Shaw, M. Kulmala, H. Siebert

“…During two intensive campaigns in 2010 and 2011, helicopter-borne measurement flights were performed to investigate the thermodynamic, turbulent, microphysical, and radiative properties of trade-wind cumuli over Barbados. …”
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Intelligent height measurement technology for ground encroachments in large‐scale power transmission corridor based on advanced binocular stereovision algorithms by Zhong Tang, Chenglong Jia, Heng Wang, Shuaiang Rong, Wenbin Zhao

“…By using this novel BSV technology, the total transmission line inspection cost is expected to be greatly reduced by comparing with manned helicopter and UAV inspections.…”
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Automatic Detection and Classification of Dead Nematode-Infested Pine Wood in Stages Based on YOLO v4 and GoogLeNet by Xianhao Zhu, Ruirui Wang, Wei Shi, Qiang Yu, Xiuting Li, Xingwang Chen

“…Our work presents a staged detection and classification approach for a dead nematode-infested pine wood based using You Only Look Once version 4 (YOLO v4) and Google Inception version 1 Net (GoogLeNet), employing high-resolution images acquired by helicopter. Experiments showed that the detection accuracy of the staged detection and classification method and the method using only the YOLO v4 model were comparable for a dead nematode-infested pine wood when the amount of data was sufficient, but when the amount of data was limited the detection accuracy of the former was higher than that of the latter. …”
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Modeling and Adaptive Hybrid Fuzzy Control of a Nonlinear Rotor System by Zoltan Sari, Ildiko Jancskar, Adam Schiffer, Geza Varady*

“…The paper deals with the hierarchical modeling, simulation and model-based investigation of a nonlinear 1 DOF helicopter model, which is the most important building block of complex multi-rotor systems. …”
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Airborne Electromagnetic, Magnetic, and Radiometric Surveys at the German North Sea Coast Applied to Groundwater and Soil Investigations by Bernhard Siemon, Malte Ibs-von Seht, Annika Steuer, Nico Deus, Helga Wiederhold

“…The Federal Institute for Geosciences and Natural Resources (BGR) conducted airborne geophysical surveys in the coastal region of the German Bight between 2000 and 2014. The helicopter-borne system used simultaneously collected electromagnetic (HEM), magnetic (HMG), and radiometric (HRD) data. …”
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A computing offloading strategy for UAV based on improved bat algorithm by Fei Xu, Shun Zi, Jianguo Wang, Jiajun Ma

“…Therefore, we have proposed a mobile edge computing (MEC) system architecture composed of single unmanned helicopter (UH) and multiple reconnaissance UAVs. Among them, the UH as a MEC server to provide computing services for reconnaissance UAVs. …”
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LiDAR-Based Real-Time Detection and Modeling of Power Lines for Unmanned Aerial Vehicles by Fábio Azevedo, André Dias, José Almeida, Alexandre Oliveira, André Ferreira, Tiago Santos, Alfredo Martins, Eduardo Silva

“…The costs and risks associated with the traditional foot patrol and helicopter-based inspections can be reduced by using UAVs with the appropriate sensors. …”
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No effect of liming on the Eastern Red-backed Salamander after 5 years by Jean-David Moore

“…Lime (CaCO3) was spread by helicopter on a declining Sugar Maple forest growing on an acidic and base-poor soil. …”
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Different Eye Tracking Patterns in Autism Spectrum Disorder in Toddler and Preschool Children by Xue-Jun Kong, Zhen Wei, Binbin Sun, Yiheng Tu, Yiting Huang, Ming Cheng, Siyi Yu, Georgia Wilson, Joel Park, Zhe Feng, Mark Vangel, Jian Kong, Guobin Wan

“…BackgroundChildren with autism spectrum disorder (ASD) have been observed to be associated with fixation abnormality as measured eye tracking, but the dynamics behind fixation patterns across age remain unclear.Materials and MethodsIn this study, we investigated gaze patterns between toddlers and preschoolers with and without ASD while they viewed video clips and still images (i.e., mouth-moving face, biological motion, mouthing face vs. moving object, still face picture vs. objects, and moving toys).ResultsWe found that the fixation time percentage of children with ASD showed significant decrease compared with that of TD children in almost all areas of interest (AOI) except for moving toy (helicopter). We also observed a diagnostic group (ASD vs. …”
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Algorithm for Propeller Optimization Based on Differential Evolution by Andry Sedelnikov, Evgenii Kurkin, Jose Gabriel Quijada-Pioquinto, Oleg Lukyanov, Dmitrii Nazarov, Vladislava Chertykovtseva, Ekaterina Kurkina, Van Hung Hoang

“…The optimization technique was implemented in the OpenVINT code and has been used to design helicopter and tractor propellers for unmanned aerial vehicles. …”
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Ice thickness distribution of all Swiss glaciers based on extended ground-penetrating radar data and glaciological modeling by Melchior Grab, Enrico Mattea, Andreas Bauder, Matthias Huss, Lasse Rabenstein, Elias Hodel, Andreas Linsbauer, Lisbeth Langhammer, Lino Schmid, Gregory Church, Sebastian Hellmann, Kevin Délèze, Philipp Schaer, Patrick Lathion, Daniel Farinotti, Hansruedi Maurer

“…Using AIR-ETH, a new helicopter-borne ground-penetrating radar (GPR) platform, we measured the ice thickness of all large and most medium-sized glaciers in the Swiss Alps during the years 2016–20. …”
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Numerical Simulations of Spray Combustion in Jet Engines by Arvid Åkerblom, Francesco Pignatelli, Christer Fureby

“…In this study, we examine premixed and pre-vaporized combustion of dodecane, Jet A, and a synthetic test fuel, C1, based on the alcohol-to-jet (ATJ) certified pathway behind an equilateral bluff-body flameholder, spray combustion of Jet A and C1 in a laboratory combustor, and spray combustion of Jet A and C1 in a single-sector model of a helicopter engine by means of numerical simulations. …”
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A dynamic task assignment model for aviation emergency rescue based on multi-agent reinforcement learning by Yang Shen, Xianbing Wang, Huajun Wang, Yongchen Guo, Xiang Chen, Jiaqi Han

“…Comparative experiments demonstrate that the proposed model is able to achieve higher assignment benefits by considering the dynamic nature of rescue demands and the limited availability of rescue helicopter crews. Additionally, the model is able to achieve higher task assignment rates and average time satisfaction by assigning tasks in a more efficient and timely manner. …”
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Study of the flow and impingement of water droplets inside an inertial particle separator by Ningli Chen, Jianmin Du, Yaping Hu, Honghu Ji, Yongqing Yuan

“…An inertial particle separator (IPS) mounted before a helicopter engine faces the danger of ice accretion caused by the impingement of super-cooled water droplets. …”
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Selection of Vertiports Using K-Means Algorithm and Noise Analyses for Urban Air Mobility (UAM) in the Seoul Metropolitan Area by Junyoung Jeong, Minjun So, Ho-Yon Hwang

“…The locations of the selected vertiports were also identified using satellite image maps to ensure that the location of the selected vertiports were suitable for the actual vertiport location, and if the location was not appropriate, final vertiports were selected through the repositioning process. A helicopter model was then used to analyze the amount of noise reduction achieved by the noise priority route, which is the route between the selected K-UAM vertiports compared to the shortest distance route. …”
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Open stent graft repair with upper-half Sternotomy for blunt thoracic aortic injury: a case report by Toshinori Komatsu, Tamaki Takano, Hiromu Kehara, Megumi Fuke, Takamitsu Terasaki, Masayuki Sakaguchi

“…He was transferred to our hospital by helicopter. X-ray examination and computed tomography revealed fractures of left humeral head and femoral neck and aortic isthmus dissection. …”
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