Results 1 to 10 of about 10,092 (210)

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   +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

Thrust Vectoring Control of a Novel Tilt-Rotor UAV Based on Backstepping Sliding Model Method [PDF]

open access: yesSensors, 2023
In this paper, a control method of a novel tilt-rotor UAV with a blended wing body layout is studied. The novel UAV is capable of vertical take-off and landing and has strong stealth capabilities that can be applied to carrier-borne reconnaissance ...
Zelong Yu, Jingjuan Zhang, Xueyun Wang
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

Adaptive Neural Network Sliding Mode Control for Quad Tilt Rotor Aircraft [PDF]

open access: yesComplexity, 2017
A novel neural network sliding mode control based on multicommunity bidirectional drive collaborative search algorithm (M-CBDCS) is proposed to design a flight controller for performing the attitude tracking control of a quad tilt rotors aircraft (QTRA).
Yanchao Yin, Hongwei Niu, Xiaobao Liu
doaj   +2 more sources

Sensitivity Analysis for Design Parameters of Electric Tilt-Rotor Aircraft

open access: yesAerospace
In recent years, there has been rapid development in electric aircraft, particularly electric vertical takeoff and landing (eVTOL) aircraft, as part of efforts to promote green aviation.
Yu Wang, Wenyuan Ma, Zhaolin Chen
doaj   +2 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

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

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

Effect of Rotor Tilt on the Gust Rejection Properties of Multirotor Aircraft

open access: yesDrones, 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
doaj   +1 more source

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