Results 11 to 20 of about 63,330 (315)
Ducted Fan Flying Object with Normal and Reverse Ducted Fan Units
International Journal of Robotics and Mechatronics, 2014 Recently, UAV such as single / multi rotor helicopter is used in fields of aerial photography and aerial investigation. But rotor blades of UAV thrust device are not covered, and the thrust is generated by high rotational speed. Thus UAV has a high risk of damage. In previous study, we presented inverted pendulum type flying object
Masafumi Miwa, Shinya Marubashi
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Modeling and control of a novel facade cleaning robot with four-ducted fan drive
International Journal of Advanced Robotic Systems, 2021 With the development of modern cities, the demand for cleaning glass curtain walls in urban skyscrapers is increasing, and therefore, many researches on facade cleaning robots have been carried out in the past few decades.
Xiao-Peng Li, Xin Wang, Bin Feng
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Evaluation of the thrust of a ducted coaxial propfan
Авіаційно-космічна техніка та технологія, 2022 One of the basic requirements for existing and future aircraft engines is high specific power, low specific fuel consumption, and low noise level. The current work evaluates the thrust of a ducted coaxial propfan.
Vjacheslav Usenko +2 more
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International Journal of Aerospace Engineering, 2020 The tail rotor of a helicopter operating under low-speed crosswind undergoes highly complex flow due to the interaction between the main rotor, fuselage, and tail rotor system.
Nahyeon Roh, Sejong Oh, Donghun Park
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Thermal Benefits of a Cooling Guide Vane for an Electrical Machine in an Electric Ducted Fan
Aerospace, 2022 Equipped with a distributed electric propulsion system, eVTOL is the primary vehicle for future urban air mobility. The electrical machine determines the weight of the distributed electric propulsion system, and the cooling capability determines the ...
Xuanyang Hu +5 more
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Optimized Matching Lift Unit Transmission Ratio of Engine Driven Ducted Fan
MATEC Web of Conferences, 2018 As a kind of VTOL technology, ducted fan is not only used by many kinds of aircrafts, but also one of the trends of the future aircraft lift system, and attracts more and more attention. For an engine driven ducted fan lift unit, involving the engine and
Xiao Senlin +6 more
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Aerospace, 2022 The distributed electric propulsion (DEP) eVTOL aircraft has gained rising interest for its promising potential in high-speed cruise compared with conventional tilt-rotor configuration.
Tielin Ma +5 more
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Safe Reinforcement Learning for Transition Control of Ducted-Fan UAVs
Drones, 2023 Ducted-fan tail-sitter unmanned aerial vehicles (UAVs) provide versatility and unique benefits, attracting significant attention in various applications.
Yanbo Fu, Wenjie Zhao, Liu Liu
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CFD Study of an Annular-Ducted Fan Lift System for VTOL Aircraft
Aerospace, 2015 The present study aimed at assessing a novel annular-ducted fan lift system for VTOL aircraft through computational fluid dynamics (CFD) simulations. The power and lift efficiency of the lift fan system in hover mode, the lift and drag in transition mode,
Yun Jiang, Bo Zhang, Tao Huang
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Applied Sciences, 2015 The aerodynamic parameters of ducted fan micro aerial vehicles (MAVs) are difficult and expensive to precisely measure and are, therefore, not available in most cases. Furthermore, the actuator dynamics with risks of potentially destabilizing the overall
Shouzhao Sheng, Chenwu Sun
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