Results 21 to 30 of about 183,357 (179)
Thrust pulsation of coaxial main rotor, caused by the blades relative position
Научный вестник МГТУ ГА, 2020 The influence of reciprocal position of the upper rotor blades in respect to the lower rotor blades is characteristic for coaxial main rotor. It is established that the initial azimuth of the blade, for example, of the upper rotor’s which does not ...
B. S. Kritsky +3 more
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Dynamics Modeling and Validation of Coaxial Lifting Rotors
Shanghai 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
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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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Modelling the aerodynamics of coaxial helicopters : from an isolated rotor to a complete aircraft [PDF]
, 2008 This paper provides an overview of recent research on the aerodynamics of coaxial rotors at the Rotorcraft Aeromechanics Laboratory of the Glasgow University Rotorcraft Laboratories.
Brown, R.E. +7 more
core +4 more sources
An Analytical Method for Coaxial Helicopter Ground Resonance [PDF]
MATEC Web of Conferences, 2020 A time-frequency analytical method is presented to analyze physical mechanism of coaxial helicopter ground resonance. Eigenvalue calculation and numerical integration of disturbance equations of motions are used to obtain modal characters and time-domain
Liu Xiangyi +4 more
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Geometry Design of Coaxial Rigid Rotor in High-Speed Forward Flight
International Journal of Aerospace Engineering, 2020 The aerodynamic performance analysis and blade planform design of a coaxial rigid rotor in forward flight were carried out utilizing CFD solver CLORNS. Firstly, the forward flow field characteristics of the coaxial rotor were analyzed.
Bo Wang +3 more
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Hover Performance Analyses of Coaxial Co-Rotating Rotors for eVTOL Aircraft
Aerospace, 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
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Aerospace, 2023 This study develops a hybrid solver with reversed overset assembly technology (ROAT), a viscous vortex particle method (VVPM), and a CFD program based on the URNS method, in order to study the aerodynamic and acoustic characteristics of coaxial rigid ...
Yucheng Yang +3 more
doaj +1 more source
Sensors, 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
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Effect of rotor stiffness and lift offset on the aeroacoustics of a coaxial rotor in level flight [PDF]
, 2009 The acoustic characteristics of a twin contra-rotating coaxial rotor configuration with significant flapwise stiffness are investigated in steady forward flight.
Brown, R.E. +5 more
core +4 more sources