Results 31 to 40 of about 3,121 (160)
Flight Characteristics of Quad Rotor Helicopter with Tilting Rotor
The Journal of Instrumentation, Automation and Systems, 2014 A quad rotor helicopter (QRH), a type of unmanned aerial vehicle (UAV), uses a tilted attitude to generate a horizontal thrust component in the flying direction. In the case of autonomous control, the attitude control system is used to tilt the airframe against disturbances such as crosswinds.
Akitaka Imamura +3 more
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Design and Implementation of a Novel Tilt-Rotor Tri-Copter UAV Configuration
Engineering ProceedingsHover-capable unmanned aerial vehicles (UAVs), including rotary-wing UAVs such as unmanned helicopters, multi-rotor drones, and tilt-rotor UAVs, are widely employed due to their hovering capabilities.
Zishi Shen, Fan Liu
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Hurdle-Hop Simulation of Tilt-Rotor Aircraft Based on Optimal Control Theory
Xibei Gongye Daxue Xuebao, 2020 Aiming at simulating the hurdle-hop of tilt-rotor aircraft in forward flight near the ground, two models of numerical simulation and analysis based on optimal control theory were proposed.
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Photonics, 2021 To study the radar characteristics of the tiltrotor aircraft when considering rotor rotation and tilting actions, a dynamic calculation method (DCM) based on physical optics and physical theory of diffraction is presented. The results show that the radar
Zeyang Zhou +3 more
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Aerodynamic Configuration and Stability Analysis of a Split-Type Tilt-Rotor Cargo Flying Vehicle
AerospaceThe flying car, academically known as electric vertical takeoff and landing (eVTOL) aircraft, is one of the core vehicles for low-altitude transportation. The split-type tilt-rotor cargo flying vehicle that is composed of tilt rotors, a fixed wing, and a
Songyang Li +6 more
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Wind farm modelling of tilted rotors
Journal of Physics: Conference SeriesAbstract This study explores the benefits of tilted rotors in wind farms, focusing on a 3x3 grid of 10MW turbines and a 153-turbine farm modelled after the Hollandse-Kust West site with 15MW turbines. Computational Fluid Dynamics models ranging from mid to higher order, including FarmFlow (Parabolic RANS), TNO-VBM (RANS), and NREL-SOWFA (
Vimalakanthan, K. +2 more
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Effect of Rotor Tilt on the Gust Rejection Properties of Multirotor Aircraft
Drones, 2022 In order to operate safely in windy and gusty conditions, multirotor VTOL aircraft require gust resilience. This paper shows that their gust rejection properties can be improved by applying a small amount of fixed outward rotor tilt. Standard aerodynamic
James F. Whidborne +2 more
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Horizontal Fixed Attitude Flight of Quad Rotor Helicopter with Tilting Rotor
Journal of Robotics and Mechatronics, 2023 A quad rotor helicopter (QRH), a type of unmanned aerial vehicle (UAV), uses a tilted attitude to generate a horizontal thrust component in the flying direction. In the case of autonomous control, the attitude control system is used to tilt the airframe against disturbances such as crosswinds.
openaire +1 more source
Journal of Applied Science and Engineering, 2023 The tilt rotor aircraft is capable of both low-speed hovering and high-speed flight, which has a larger flight envelope. However, during its transition phase, due to the change of the mechanical structure, the dynamic characteristics of the rotor and the
Liben Yang +3 more
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Wind Field Disturbance Analysis and Flight Control System Design for a Novel Tilt-Rotor UAV
IEEE Access, 2020 The wind field has a great influence on the control stability of Tilt-rotor unmanned aerial vehicle (UAV), especially during the take-off and landing phase.
Qian Zhang +4 more
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