Results 21 to 30 of about 20,378 (254)
Studia Ecologiae et Bioethicae, 2003 in English is not available for this article.
Gerhard Höver
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Disturbance observer based sliding mode control for unmanned helicopter hovering operations in presence of external disturbances [PDF]
INCAS Bulletin, 2018 Numerous control techniques are developed for miniature unmanned helicopters to do hover operation with each method having its own advantages and limitations.
Ihsan ULLAH, Hai-Long PEI
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AerospaceIn the vertical take-off and landing (VTOL) state of tiltrotor aircraft, the inlet entrance encounters the incoming airflow at a 90° attack angle, resulting in highly complex internal flow characteristics that are extremely susceptible to gusts ...
Haicheng Zhu +6 more
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A Rapid Prediction Model of Three-Dimensional Ice Accretion on Rotorcraft in Hover Flight
AerospaceHelicopters often operate at altitudes where cloud activity is prevalent, making them susceptible to icing hazards. Accurate and rapid prediction of ice accretion on rotors is crucial for expanding helicopter flight capabilities and enhancing flight ...
Weibin Li +5 more
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Aerodynamic Performance of Quadrotor UAV with Non-Planar Rotors
Applied Sciences, 2019 The mobility of a quadrotor UAV is significantly affected by its aerodynamics, especially when the closely spaced rotors are applied in the multi-rotor system.
Yao Lei, Jinli Wang
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Aerodynamic Performance of a Coaxial Hex-Rotor MAV in Hover
Aerospace, 2021 Micro aerial vehicles (MAVs) usually suffer from several challenges, not least of which are unsatisfactory hover efficiency and limited fly time. This paper discusses the aerodynamic characteristics of a novel Hex-rotor MAV with a coaxial rotor capable ...
Yao Lei, Jiading Wang, Wenjie Yang
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Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
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Carrying Bricks: Guiding Pre-Tenure Program Coordinators from Survival to Superstars
Journal of Higher Education Policy and Leadership Studies, 2022 The purpose of this article is to discuss a) the dual role of the assistant professor/ program coordinator, b) specific strategies for developing pre-tenure survival skills and c) leveraging the pseudo administrative duties of a program coordinator to ...
Jim K. Rost, Ashlee Hover
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Autonomous helicopter hover using an artificial neural network
, 2001 Details the developments to date of an unmanned air vehicle (UAV) based on a standard size 60 model helicopter. The design goal is to have the helicopter achieve stable hover with the aid of an INS and stereo vision.
Wyeth, Gordon +2 more
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Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer
Molecular Oncology, EarlyView.Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
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