Results 1 to 10 of about 6,732 (195)

Study of Modeling and Optimal Take-Off Scheme for a Novel Tilt-Rotor UAV [PDF]

open access: yesSensors, 2022
The optimal trajectory planning for a novel tilt-rotor unmanned aerial vehicle (UAV) in different take-off schemes was studied. A novel tilt-rotor UAV that possesses characteristics of both tilt-rotors and a blended wing body is introduced.
Zelong Yu, Jingjuan Zhang, Xueyun Wang
doaj   +2 more sources

Dynamic Electromagnetic Scattering Simulation of Tilt-Rotor Aircraft in Multiple Modes [PDF]

open access: yesSensors, 2023
To study the electromagnetic scattering of tilt-rotor aircraft during multi-mode continuous flight, a dynamic simulation approach is presented. A time-varying mesh method is established to characterize the dynamic rotation and tilting of tilt-rotor ...
Zhongyang Fei   +4 more
doaj   +2 more sources

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   +2 more sources

Numerical simulation of the transition flight aerodynamics of cross-shaped quad-tiltrotor UAV [PDF]

open access: yesScientific Reports
In order to enhance the stability of the tilt transition process, a new configuration of Quad-Tiltrotor UAV was presented in this paper. Firstly, numerical simulation was used to calculate and analyze the aerodynamic interaction between the front rotor ...
Siliang Du, Yi Zha
doaj   +2 more sources

Riemann’s theorem for quantum tilted rotors [PDF]

open access: yesPhysical Review C, 1992
8 pages, Phys.
Rosensteel, G., Goodman, A. L.
openaire   +3 more sources

Dynamic Performance Investigation for Tilt-rotor Aircraft [PDF]

open access: yesProceedings of the Vertical Flight Society 76th Annual Forum, 2020
The tiltrotor aircraft has the capability to extend its performance characteristics compared to the conventional helicopter. However, the performance features, namely the maximum flight duration and flight range, are determined by a series of factors, such as the nacelle angle, the aerodynamic interference, and the effect of the fuel ...
Yuan, Ye   +2 more
openaire   +3 more sources

The Investigation on L1 Adaptive Control of the Tilt-Rotor Aircraft

open access: yesInternational Journal of Aerospace Engineering, 2021
Considering the uncertainty of the flight dynamics model of the tilt-rotor aircraft in different flight modes, an L1 adaptive controller for full flight modes control system of tilt-rotor aircraft is designed.
Quanlong Chen   +5 more
doaj   +1 more source

Numerical Simulation of Continuous Tilting Transition of Tiltrotor Aircraft

open access: yesHangkong gongcheng jinzhan, 2021
The aerodynamic configuration of the tiltrotor aircraft is constantly changed during the tilting transition process, and the aerodynamic characteristics is of strongly nonlinear characteristics.Aiming at the complex states of continuous tilting ...
WU Weiwei   +3 more
doaj   +1 more source

Dynamic modeling and control system design of tilt-rotor UAV

open access: yesDianzi Jishu Yingyong, 2021
Tilt-rotor UAV(unmanned aerial vehicle), integrating the VTOL(vertical take-off and landing) and hovering of the four-rotor UAV and long-distance and high-speed navigation capabilities of the fixed-wing UAV, is a new model of UAV.
Liu Jianlong, Dou Yinke, Zuo Guangyu
doaj   +1 more source

Study on modular design method of tiltable rotor system for quad tilt-rotor unmanned aircraft

open access: yesHangkong gongcheng jinzhan, 2023
The tilt-rotor unmanned aerial vehicle has the obvious trend of multi-rotor development, and modular design of tiltable rotor system is helpful to integrate assembly and can reduce design duplication.
SUN Xiaobin, XU Jinfa
doaj   +1 more source

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