Results 81 to 90 of about 92,623 (181)
Modeling and Robust Tracking Decoupling Control of a Coaxial Unmanned Helicopter Based on the Improved Alternating Direction Method of Multipliers. [PDF]
Comput Intell Neurosci, 2022 Xu A, Wang F, Chen M.
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Научный вестник МГТУ ГАThe vortex ring states are observed when the rotor is flowed at positive angles of attack. For the main rotor, these conditions are realized during a steep descent of the helicopter at low speeds.
P. V. Makeev +3 more
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AerospaceThis paper proposes an advanced model predictive control (MPC) scheme for the attitude tracking of coaxial drones under wind disturbances. Unlike most existing MPC setups, this scheme embeds steady-input, steady-output, and steady-state conditions into ...
Zhi Chen, Xiangyu Lin, Wanyue Jiang
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Vibration and Performance Analyses Using Individual Blade Pitch Controls for Lift-Offset Rotors
International Journal of Aerospace Engineering, 2019 This work attempts to reduce the hub vibratory loads of a lift-offset rotor using IBC (individual blade pitch control) in high-speed forward flight. As a lift-offset rotor for the present study, the rigid coaxial rotor of a XH-59A compound helicopter is ...
Jae-Sang Park +4 more
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Co-design Optimization of a Novel Multi-identity Drone Helicopter (MICOPTER). [PDF]
J Intell Robot Syst, 2022 Abedini A, Bataleblu AA, Roshanian J.
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Research on Attitude Detection and Flight Experiment of Coaxial Twin-Rotor UAV. [PDF]
Sensors (Basel), 2022 You D, Hao Y, Xu J, Yang L.
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Dynamic Electromagnetic Scattering Simulation of Tilt-Rotor Aircraft in Multiple Modes. [PDF]
Sensors (Basel), 2023 Fei Z, Yang Y, Jiang X, Zhao Q, Chen X.
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Modeling and Simulation of Coaxial Helicopter Rotor Aerodynamics
, 2009 A framework is developed for the computational fluid dynamics (CFD) analyses of a series of helicopter rotor flowfields in hover and in forward flight. The methodology is based on the unsteady solutions of the three-dimensional, compressible Navier-Stokes equations recast in a rotating frame of reference.
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Jixie chuandongObjectiveAiming at the struts, the key components for the installation and support of helicopter main reducers, the research progress of conventional struts and intelligent struts is analyzed in combination with the development trend of strut structures.
LI Miaomiao +3 more
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Experimental Investigation on Hover Performance of a Ducted Coaxial-Rotor UAV. [PDF]
Sensors (Basel), 2023 Li H, Chen Z, Jia H.
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