A modified Beddoes-Leishman dynamic stall model for wind turbine applications by Reinecke, Arne

“…Dynamic stall is phenomenon that plays a role in many applications such as helicopter or wind turbine aerodynamics. Proper modelling of unsteady lift, drag, and pitching moment characteristics of an airfoil undergoing dynamic stall can help to give more accurate performance predictions, but has turned out to be extremely challenging. …”
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An Improved MTI filter for Ground Clutter Reduction in UAV Classification by Wan, Fangyuan, Liu, Qinglai, Wang, Chen, Guo, Xin, Lin, Zhiping

“…The effectiveness of the proposed method has been verified by an experimental CW radar dataset, collected from a helicopter UAV.…”
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Inverse model based control for a twin rotor system by Toha, Siti Fauziah, Tokhi, M. O.

“…A laboratory set-up system which resembles the behaviour of a helicopter, namely twin rotor multi-input multioutput system (TRMS) is used as an experimental rig in this research. …”
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OFFER: Off-environment reinforcement learning by Ciosek, K, Whiteson, S

“…Exploiting environment variables is crucial in domains containing significant rare events (SREs), e.g., unusual wind conditions that can crash a helicopter, which are rarely observed under random sampling but have a considerable impact on expected return. …”

Simulation framework for civil tiltrotor mission performance by Gires, Ezanee

“…The mission procedures are based on the flight envelope data available in the public domain as well as modern helicopter operations. This work can be used as the baseline for the modelling of conceptual configurations of civil tiltrotors, particularly for variations in powerplant technologies.…”
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Implementing of industrial deformation analysis system (InDA) for precise surveying application by M. Idris, Khairulnizam, Setan, Halim, Majid, Zulkepli

“…Several precise measurement tests of helicopter model and hull model are discussed to highlight the practicality of InDA.…”

Professional Applicator's Guide to Herbicides for Melaleuca Control by Kenneth A. Langeland, Michael J. Meisenburg

“…Four application methods, foliar, frill-and-girdle, cut stump, and basal (applied to the soil) are used depending on extent of the population and other factors. Helicopter, truck, or all terrain vehicle (atv)-mounted sprayers, backpack sprayers, and hand-held spray bottles, and dropper bottles are used for application of herbicide. …”
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Preeclampsia Is a Syndrome with a Cascade of Pathophysiologic Events by Wilfried Gyselaers

“…As a result, multiple organ dysfunctions install progressively and eventually reach a state where mother and/or fetus are at risk of severe morbidity or even mortality, and where the termination of pregnancy becomes the least harmful solution. The helicopter view on pathophysiologic processes associated with preeclampsia, as presented in this paper, illustrates that the etiology of preeclampsia cannot be reduced to one single mechanism, but is to be considered a cascade of consecutive events, fundamentally not unique to pregnancy.…”
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Vertical profiling of aerosol particles and trace gases over the central Arctic Ocean during summer by P. Kupiszewski, C. Leck, M. Tjernström, S. Sjogren, J. Sedlar, M. Graus, M. Müller, B. Brooks, E. Swietlicki, S. Norris, A. Hansel

“…The experiment was conducted from on board the Swedish icebreaker <i>Oden</i>, and provided both ship- and helicopter-based measurements. This study focuses on the vertical helicopter profiles and onboard measurements obtained during a three-week period when <i>Oden</i> was anchored to a drifting ice floe, and sheds light on the characteristics of Arctic aerosol particles and their distribution throughout the lower atmosphere. …”
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Multiple trauma management in mountain environments - a scoping review by G. Sumann, D. Moens, B. Brink, M. Brodmann Maeder, M. Greene, M. Jacob, P. Koirala, K. Zafren, M. Ayala, M. Musi, K. Oshiro, A. Sheets, G. Strapazzon, D. Macias, P. Paal

“…Reduced on-scene times may be achieved with helicopter rescue. Advanced diagnostics (e.g. ultrasound) may be used and treatment continued during transport.…”
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Investigating the Causes and Consequences of Transporting Patients by Air Ambulance to Shiraz Hospitals by Mohammad Javad Moradian, Behnaz Rastegarfar, farahnaz fooladband, Zahra Tofighigi, Mohammad reza Rastegar

“…Transporting patients by helicopter provides faster medical services to patients and reduces mortality and disability. …”
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Poplave septembra 2010 – obdelava nemerskih fotografij s fotogrametričnim DMR in lidarskimi podatki ; The floods of september 2010 – acquisition of data from non-metric images wi... by Mihaela Triglav Čekada, Matija Zorn

“…The floods on the Ljubljana moor, Radensko polje and Dobrepolje were later also covered with handheld imaging made from helicopter on September 23rd, 2010. Terrestrial imaging was made in the time of the highest waters and the imaging from helicopter when the floods were retreating. …”
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Favourable neurological outcome following paediatric out-of-hospital cardiac arrest: a retrospective observational study by Alexander Fuchs, Deliah Bockemuehl, Sabrina Jegerlehner, Christian P. Both, Evelien Cools, Thomas Riva, Roland Albrecht, Robert Greif, Martin Mueller, Urs Pietsch

“…Our study aimed to identify characteristics of and factors associated with favourable neurological outcome following the resuscitation of children by the Swiss helicopter emergency medical service. Materials and methods This retrospective observational study screened the Swiss Air-Ambulance electronic database from 01-01-2011 to 31-12-2021. …”
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A system theoretic safety analysis of U.S. Coast Guard aviation mishap involving CG-6505 by Hickey, Jon (Jon Patrick)

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Hybrid active force control for fixed based rotorcraft by Mohamed, Sherif Ibrahim Abdelmaksoud

“…Among different types of rotorcraft systems, the twin-rotor helicopter and quadrotor models are considered the most versatile flying machines nowadays due to their range of applications in the civilian and military sectors. …”
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Experimental Study on the Effect of Different Parameters on Rotor Blade Icing in a Cold Chamber by Zhengzhi Wang, Chunling Zhu, Ning Zhao

“…Icing phenomenon is an important problem in helicopter rotor design. Conducting experiments in a cold chamber is one of the main methods used to study the law of rotor icing. …”
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Effectiveness of application of modal analysis for the monitoring of stressed or operated structures by Aleksey Mironov, Pavel Doronkin, Aleksander Priklonsky, Andris Chate

“…The research was conducted using two operating laboratory models, when the first one imitated a part of a fuel/gas pipeline and the second – a helicopter blade. The results of finite-element model simulation, identification of natural mode and the influence of the two types of virtual defects on the changes in the dynamic properties are provided. …”
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Tracking control and disturbance rejection of micro quadrotor via adaptive internal model by Bing Dai, Guizhi Meng

“…Unlike the traditional controller design method, the proposed controllers and adaptive control laws are designed respectively for roll angle, pitch angle, yaw angle and the height of the four-channel helicopter. Moreover, the new algorithm can perform well in attitude tracking and disturbance rejection of the closed-loop systems. …”
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Phase difference and stability of a shaft mounted a dry friction damper: Effects of viscous internal damping and gyroscopic moment by Zhonghe Huang, Jianping Tan, Xiong Lu

“…Effects of different parameters of the system, especially viscous internal damping of the composite shaft and gyroscopic moment on the phase difference and stability regions are presented in detail by analytical and numerical simulation based on a helicopter tailrotor driveline. The experimental investigation is conducted in a test rig to validate theoretical formulas and simulation analysis. …”
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Ensuring permissible level of gas turbine dynamic loading in operation by means of standard engine control devices by V. V. Chervonyuk, B. B. Korovin

“…The article discusses the use of this approach to minimize the dynamic loading of the LPC (low pressure compressor) blades of afterburning turbojet engines installed on supersonic aircraft, as well as to combat oscillatory combustion in combustion chambers with shock actuation of free wheel clutches and self-induced oscillation in the helicopter transmission system. Besides, it is shown that the monitoring of GTE (gas turbine engine) dynamic load should be accompanied by improving the efficiency of the on-board engine diagnostic system. …”
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