Results 1 to 10 of about 2,332 (184)

Aerodynamic Uncertainty Quantification for Tiltrotor Aircraft [PDF]

open access: yesAerospace, 2022
The tiltrotor has unique flight dynamics due to the aerodynamic interference characteristics. Multiple aerodynamics calculation approaches, such as the CFD method, are utilised to characterise this feature.
Ye Yuan, Douglas Thomson, David Anderson
doaj   +4 more sources

Mathematical Modeling and Stability Analysis of Tiltrotor Aircraft

open access: yesDrones, 2022
The key problem in the development process of a tiltrotor is its mathematical modeling. Regarding that, this paper proposes a dividing modeling method which divides a tiltrotor into five parts (rotor, wing, fuselage, horizontal tail, and vertical fin ...
Hanlin Sheng, Chen Zhang, Yulong Xiang
doaj   +2 more sources

Aerodynamic Interference on Trim Characteristics of Quad-Tiltrotor Aircraft [PDF]

open access: yesAerospace, 2022
The aerodynamic interference between the different components of quad-tiltrotor (QTR) aircraft were considered to analyze its influence on trim characteristics.
Pan Zhou   +3 more
doaj   +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   +2 more sources

Conversion Flight Control for Tiltrotor Aircraft via Active Disturbance Rejection Control

open access: yesAerospace, 2022
The tiltrotor aircraft consists of three primary flight modes, which are helicopter flight mode in low forward speed flight, airplane flight mode in high forward speed flight and conversion flight mode. This paper presents an active disturbance rejection
Ke Lu   +4 more
doaj   +1 more source

Training Sample Pattern Optimization Based on a Swarm Intelligence Algorithm for Tiltrotor Flight Dynamics Model Approximation

open access: yesAerospace, 2023
Neural networks have been widely used as compensational models for aircraft control designs and as surrogate models for other optimizations. In the case of tiltrotor aircraft, the total number of aircraft states and controls is much greater than that of ...
Jiayu Wen   +4 more
doaj   +1 more source

Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method

open access: yesPhotonics, 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
doaj   +1 more source

Assessment of a Mid-Fidelity Numerical Approach for the Investigation of Tiltrotor Aerodynamics

open access: yesApplied Sciences, 2021
The study of the complex aerodynamics that characterise tiltrotors represents a challenge for computational fluid dynamics tools. URANS numerical solvers are typically used to explore the aerodynamic features that characterise the different flight ...
Alex Zanotti   +4 more
doaj   +1 more source

Development of a multipurpose test rig and validation of an innovative rotorcraft vertical tail - TAILTEST [PDF]

open access: yesMATEC Web of Conferences, 2021
TAILTEST 9th call of the CS2 project started in the 2019 year is aimed at the development of a multipurpose test rig for validation of an innovative rotorcraft vertical tail.
Horak Vaclav
doaj   +1 more source

Hybrid Adaptive Control for Tiltrotor Aircraft Flight Control Law Reconfiguration

open access: yesAerospace, 2023
Tiltrotor aircrafts have both fixed-wing control surfaces and helicopter rotors for attitude control. The redundancy of control surfaces provides the possibility for the control system to reconfigure the control law when actuator faults occur during ...
Jiayu Wen   +4 more
doaj   +1 more source

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