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Aerodynamic Investigation on a Coaxial-Rotors Unmanned Aerial Vehicle of Bionic Chinese Parasol Seed [PDF]

open access: yesBiomimetics
Aerodynamic investigation of a bionic coaxial-rotors unmanned aerial vehicle (UAV) is performed. According to Chinese parasol seed features and flight requirements, the bionic conceptual design of a coaxial-rotors UAV is described.
Wenbiao Gan
exaly   +4 more sources

A Dynamic RCS and Noise Prediction and Reduction Method of Coaxial Tilt-Rotor Aircraft Based on Phase Modulation [PDF]

open access: yesSensors, 2022
For tilt-rotor aircraft with coaxial rotors (coaxial rotor aircraft), reduction of radar cross section as well as acoustic noise can be essential for stealth design, and the rotation of the coaxial rotors can have an influence on noise and dynamic radar ...
Zeyang Wang   +3 more
doaj   +2 more sources

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

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   +2 more sources

Computational Investigation of Blade–Vortex Interaction of Coaxial Rotors for eVTOL Vehicles

open access: yesEnergies, 2022
In the design of electric vertical takeoff and landing (eVTOL) vehicles, coaxial rotors have garnered significant attention due to their superior space usage and aerodynamic efficiency compared to standard rotors.
Min Chang
exaly   +3 more sources

Effect of wind disturbance on the aerodynamic performance of coaxial rotors during hovering

open access: yesMeasurement and Control, 2019
The ability to resist the effect of wind disturbance is vital for micro air vehicles. As the most compact rotor configuration for micro air vehicles, coaxial rotors will be the preferred choice for this type of devices.
Yao Lei
exaly   +2 more sources

Thrust and Noise Experimental Assessment on Counter-Rotating Coaxial Rotors

open access: yesAerospace, 2023
Multirotors are gaining great importance in the layout of innovative and more agile mobility. In this framework, a possible solution to developing an aircraft complying with the stringent size requirements characterizing this type of application may be a
Aniello Daniele Marano   +2 more
exaly   +3 more sources

Rotor Performance Predictions for Urban Air Mobility: Single vs. Coaxial Rigid Rotors

open access: yesAerospace
This work details the development and validation of a methodology for high-resolution rotor models used in hybrid Blade Element Momentum Theory Unsteady Reynolds Averaged Navier–Stokes (BEMT-URANS) CFD.
Jason Cornelius, Sven Schmitz
exaly   +3 more sources

Dynamics Modeling and Validation of Coaxial Lifting Rotors

open access: yesShanghai Jiaotong Daxue xuebao, 2022
The dynamics model for coaxial lifting rotors can be used to study the controller design and flight simulation for coaxial-rotor aerial vehicles. However, both the computational efficiency and the accuracy should be considered.
HU Jinshuo, HUANG Jianzhe
doaj   +1 more source

Experimental Study into Optimal Configuration and Operation of Two-Four Rotor Coaxial Systems for eVTOL Vehicles

open access: yesAerospace, 2022
Coaxial rotors are utilized in multirotor aerial vehicles for the added thrust compared to independent rotors while keeping similar area footprints; however, performance losses should be considered. This experimental study analyzes the effects of varying
Jubilee Prasad Rao   +3 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

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