Investigation of Rotor Efficiency with Varying Rotor Pitch Angle for a Coaxial Drone
Drones, 2022 Coaxial rotor systems are appealing for multirotor drones, as they increase thrust without increasing the vehicle’s footprint. However, the thrust of a coaxial rotor system is reduced compared to having the rotors in line.
Knut Erik Teigen Giljarhus +2 more
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Effect of Blade Tip Configurations on the Performance and Vibration of a Lift-Offset Coaxial Rotor
Aerospace, 2023 This present study investigates the effect of blade tip configurations, such as the sweepback angle and anhedral angle, on the performance and hub vibratory loads for the lift-offset coaxial rotor of a 30,000-pound-class high-speed long-range utility ...
Yu-Been Lee, Jae-Sang Park
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A comparison of coaxial and conventional rotor performance [PDF]
Journal of the American Helicopter Society, 2009 The performance of a coaxial rotor in hover, in steady forward flight, and in level, coordinated turns is contrasted with that of an equivalent, conventional rotor with the same overall solidity, number of blades, and blade aerodynamic properties.
Brown, Brown, Kim, Landgrebe, Newman
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Vibration loads analysis of coaxial rigid rotor in rotor interaction
Xibei Gongye Daxue Xuebao, 2021 A vibration load computing method for a coaxial rigid rotor was developed and applied to analyzing its vibration load in rotor interference. The structural dynamics model based on the medium-size deformation beam theory and the double-rotor aerodynamics ...
Yu Zhihao +3 more
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Investigation on Aerodynamic Noise Characteristics of Coaxial Rotor in Hover
Applied Sciences, 2022 A numerical method based on Reynolds Averaged Navier–Stokes (RANS) equations and a high-efficiency trim model is developed to simulate the aerodynamics of a coaxial rotor.
Haotian Qi +3 more
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Experimental Investigation on Hover Performance of a Ducted Coaxial-Rotor UAV
Sensors, 2023 This paper presents experimental investigations on aerodynamic performance of a ducted coaxial-rotor system to evaluate its potential application as a small unmanned aerial vehicle (SUAV).
Hai Li, Zaibin Chen, Hongguang Jia
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Horizontal Wind Effect on the Aerodynamic Performance of Coaxial Tri-Rotor MAV
Applied Sciences, 2020 The coaxial Tri-rotor micro air vehicle (MAV) is composed of three coaxial rotors where the aerodynamic characteristics of is complicated in flight especially when the wind effect is introduced.
Yao Lei, Yiqiang Ye, Zhiyong Chen
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Wind Tunnel Studies on Hover and Forward Flight Performances of a Coaxial Rigid Rotor
Aerospace, 2021 The aerodynamic performance of a reduced-scale coaxial rigid rotor system in hover and steady forward flights was experimentally investigated to gain insights into the effect of interference between upper and lower rotors and the influences of the ...
Chang Wang +5 more
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Aeroacoustics of a coaxial rotor in level flight [PDF]
, 2008 The aeroacoustic characteristics of a coaxial system with teetering rotors in level forward °ight are com- pared to those of an equivalent articulated single rotor with the same solidity.
Brown, R.E., Duraisamy, K., Kim, H.W.
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A Fault Diagnosis Model for Coaxial-Rotor Unit Using Bidirectional Gate Recurrent Unit and Highway Network [PDF]
Machines, 2022 A turbojet engine is the most significant part of an Internal Combustion Engine (ICE) for Hybrid Electric Vehicles. Specifically, the coaxial-rotor unit is the key component, whose performance largely affects the working efficiency.
Zhaoqin Peng +3 more
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