Results 21 to 30 of about 4,154,170 (239)
Xibei Gongye Daxue Xuebao, 2021 Focusing on the aerodynamic characteristics of the blended wing body (BWB) aircraft with boundary layer ingestion(BLI) distributed propulsion system; the influences of propulsion system parameters under the condition of cruise and takeoff are studied ...
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Aerodynamic Design Optimization and Analysis of Ducted Fan Blades in DEP UAVs
Aerospace, 2023 In order to reduce the dependence on fossil fuels, the concept of distributed electric propulsion (DEP) has been introduced. At present, there are a few studies on the small electric propulsion engines of DEP vertical take-off and landing (VTOL) UAVs ...
Huiling Li, Kun Liu
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Numerical analysis of wind effects on aerodynamic characteristics of a ducted fan
Chinese Journal of AeronauticsYiwei Luo +5 more
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Noise-Source Identification for Ducted Fan Systems [PDF]
AIAA Journal, 2007 Coherence-based source analysis techniques can be used to identify the contribution of combustion noise in the exhaust of a jet engine and to hence enable the design of noise-reduction devices. However, when the combustion noise propagates in a nonlinear fashion, the identified contribution using ordinary coherence methods will be inaccurate.
BENNETT, GARETH, FITZPATRICK, JOHN AIDAN
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Proceedings of the Institution of mechanical engineers. Part A, journal of power and energy, 2022 Urban air mobility is a relatively new concept that has been proposed in recent years as a means of transporting passengers and goods in urban areas. It encompasses a diverse range of Vertical TakeOff and Landing (VTOL) vehicles that function more like ...
Hanjie Jiang, Ye Zhou, H. W. Ho
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Effect of inlet distortion with crosswind on aircraft-engine intake aerodynamic performance
Nihon Kikai Gakkai ronbunshu, 2022 This paper describes an experimental study on inlet distortion in the flow ingested to an intake of a ducted fan. Recent high bypass ratio engines tend to shorten the nacelle length for better fuel consumption.
Hiroki NARUSE +7 more
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Hangkong gongcheng jinzhan, 2018 With the development of aviation aircraft, the research on new aerodynamic configuration design has become the focus of power country in aviation. The actuator disk model applied in ducted fan based on self-developed “TRIsonic Platform”(TRIP 3.0) is ...
Yang Xiaochuan +4 more
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Strength Analysis of a Ducted Axial Fan Blade [PDF]
Problemy Mechatroniki, 2018 This paper presents a numerical strength analysis of a ducted axial fan blade. Ducted axial fans are a large group of fluid-flow machines. The analysis was designed to determine the causes of cyclic failures of a ventilation unit.
Marek ROŚKOWICZ +5 more
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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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Actuators, 2021 This article proposes a novel adaptive super-twisting sliding mode control scheme with a time-delay estimation technique (ASTSMC-TDE) to control the yaw angle of a single ducted-fan unmanned aerial vehicle system. Such systems are highly nonlinear; hence,
M. Tran +3 more
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