Research on Ground Effect of Ducted Fans of VTOL UAVs
水下无人系统学报, 2023 In recent years, ducted fans, as a kind of propeller with excellent performance, have been widely used in various vertical take-off and landing(VTOL) unmanned aerial vehicles(UAVs). However, there is less research on its ground effect in China. Therefore,
Yu ZHOU, Weizheng CHEN
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Revising of the Near Ground Helicopter Hover: The Effect of Ground Boundary Layer Development
Applied Sciences, 2021 The interaction of a helicopter rotor with the ground in hover flight is addressed numerically using a hybrid Eulerian–Lagrangian CFD model. When a helicopter takes off or lands, its wake interferes with the ground.
Theologos Andronikos +3 more
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Aerodynamic Effects of Ceiling and Ground Vicinity on Flapping Wings
Applied Sciences, 2022 The combined ceiling and ground effect on the aerodynamics of a hovering flapping wing is investigated using numerical simulations. In the simulations, the wing was located between the ceiling and the ground.
Xueguang Meng +4 more
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Aerodynamic analysis of an AK-47 bullet moving at mach 2.0 in close proximity to the ground [PDF]
FME Transactions, 2022 The bullet is shot near the wall or the ground during urban warfare. This nearness leads to a pressure distribution on the bullet's entire body, which is asymmetric.
Gholap Tanmay B. +4 more
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Aerospace, 2023 The development of novel aircraft concepts and propulsion technologies requires up-to-date physics-based methods and tools for conceptual aircraft design.
Karim Abu Salem +3 more
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Investigation of Ground Effect on the Beamforming of the Glide Path Altitude Adjustment Navigation System [PDF]
فناوری در مهندسی هوافضا, 2021 The Glide Path altitude adjustment system is one of the tools of the landing navigation system (ILS) that helps the airplane to find its angle related to the runway by sending radio signals.
Zahra Davoodabadi farahani +2 more
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Influence of Aerodynamic Characteristics of Airfoil Forward Flight Considering Step-Type Ground
Shanghai Jiaotong Daxue xuebao, 2023 The aerodynamic influence of ground effects during forward flight is difficult to ignore, especially when there is a sudden change in the ground structure.
XU Xiaogang, ZHANG Yang, CHANG Min, CHEN Gang
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An AI-in-Loop Fuzzy-Control Technique for UAV’s Stabilization and Landing
IEEE Access, 2022 In this paper, an adaptable fuzzy control mechanism for an Unmanned Aerial Vehicle (UAV) to manipulate its mechanical actuators is provided. The mission (landing) for the UAV is defined to track (land on) an object that is detected by a deep learning ...
Mohammed Rabah +3 more
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Circulation Control of Airfoil Aerodynamic Force Under Ground Effect of Wavy Wall
Shanghai Jiaotong Daxue xuebao, 2022 The interaction of airflow and sea waves seriously affects the flight stability and cruising safety of ground effect vehicles. The influence of different sea states and different angles of attack were analyzed numerically on the aerodynamic ...
LIU Hao, SUN Jianhong, SUN Zhi, TAO Yang, WANG Dechen, LIU Guangyuan
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Numerical Simulation on Aerodynamics of Multi-Element Airfoil with Drooped Spoiler in Ground Effect
Xibei Gongye Daxue Xuebao, 2019 By using the finite volume method and k-ω SST turbulence model to solve the Reynolds Average Navier-Stokes equation and using the slipping wall to simulate the relative movement of the ground, the ground effect on the aerodynamic characteristic of multi ...
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