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Aerodynamic Analysis of Rotor Spacing and Attitude Transition in Tilt-Powered Coaxial Rotor UAV [PDF]

open access: yesSensors
Complex aerodynamic characteristics and optimal control during the attitude transition of tilt-powered coaxial twin-rotor unmanned aerial vehicles (UAVs) represent key challenges in flight control design.
Wei Wu   +4 more
doaj   +6 more sources

Effect of tip spacing, thrust coefficient and turbine spacing in multi-rotor wind turbines and farms [PDF]

open access: yesWind Energy Science, 2020
Large eddy simulations (LESs) are performed to study the wakes of a multi-rotor wind turbine configuration comprising four identical rotors mounted on a single tower.
N. S. Ghaisas   +5 more
doaj   +7 more sources

Aerodynamic performance of a Hex-rotor unmanned aerial vehicle with different rotor spacing

open access: yesMeasurement + Control, 2020
In this paper, an attempt was made to obtain the aerodynamic performance of a Hex-rotor unmanned aerial vehicle with different rotor spacing. The hover efficiency of the Hex-rotor unmanned aerial vehicle is analyzed by both experimental tests and ...
Yao Lei, Mingxin Cheng
doaj   +2 more sources

Effect of Rotor-Stator Spacing on Compressor Performance at Variable Operating Conditions

open access: yesApplied Sciences, 2022
This paper investigates the effect of rotor-stator spacing and operating conditions on compressor performance and the rotor-stator interaction mechanism.
Han Niu, Jiang Chen, Hang Xiang
doaj   +3 more sources

Aerodynamic Characteristics of a Hex-Rotor MAV With Three Coaxial Rotors in Hover

open access: yesIEEE Access, 2020
In order to study the aerodynamic characteristics of a Hex-rotor micro aerial vehicle (MAV) with different rotor spacing, both experiments and numerical simulations are performed in this paper.
Yao Lei, Yiqiang Ye
doaj   +3 more sources

Aerodynamic Optimization of a Micro Quadrotor Aircraft with Different Rotor Spacings in Hover

open access: yesApplied Sciences, 2020
In order to study the aerodynamic performance of the quadrotor with different rotor spacings in hover, experiments were performed together with numerical simulations. For experimental study, an experimental platform was designed to measure the thrust and
Yao Lei, Hengda Wang
doaj   +3 more sources

Experimental Investigation on Hover Performance of a Ducted Coaxial-Rotor UAV

open access: yesSensors, 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
doaj   +1 more source

Effect of windage heating on a micro high-speed rotor-stator cavity

open access: yesPropulsion and Power Research, 2022
The main objective of this work is to investigate the effect of windage heating on the micro high-speed rotor-stator cavity. The influences of centrifugal force and spacing on the windage heating are analyzed with and without the change of gap ratio ...
Jianyu Liu   +4 more
doaj   +1 more source

Hover Performance Analyses of Coaxial Co-Rotating Rotors for eVTOL Aircraft

open access: yesAerospace, 2022
Hover performance analyses of coaxial co-rotating rotors (or stacked rotors), which can be used as lifting rotors for electric VTOL (eVTOL) aircraft, are conducted here.
Yu-Been Lee, Jae-Sang Park
doaj   +1 more source

Aerodynamic Performance of V8 Octorotor MAV with Different Rotor Configurations in Hover

open access: yesMachines, 2023
A new multirotor aerial vehicle with two rotor arms formed in a V-shape configuration is introduced in this paper. To figure out the aerodynamic interference effects between rotors as an implication of the control method, this paper discusses the ...
Yao Lei, Zhicheng Feng, Chensong Ma
doaj   +1 more source

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