Results 31 to 40 of about 1,176 (168)

Unsteady Aerodynamic Characteristics of Antenna Rotating in Different Elevation Angles

open access: yesInternational Journal of Antennas and Propagation, 2021
The aerodynamic characteristics of radar antennas should be considered in computing their wind resistance and designing pedestal servo systems. In this paper, the aerodynamic characteristics of a flat plate antenna with azimuthal rotation are explored ...
Yanqi Zhang, Zhaoming Zhang
doaj   +1 more source

An Aerodynamic Correction Technique for the Unsteady Subsonic Wing–Body Interference Model

open access: yesAerospace, 2023
This paper investigates a novel correction technique for the unsteady subsonic wing–body interference model. The correction technique considers the unsteady forces on the lifting boxes and the body elements of an idealized aircraft model.
Kun Mao   +3 more
doaj   +1 more source

Numerical Analysis of the Three-Dimensional Interaction Between Nanosecond-Pulsed Actuation and Pulsed H2 Jets in Supersonic Crossflow

open access: yesAerospace
A combined flow control method, integrating nanosecond pulsed surface dielectric barrier discharge (NS-SDBD) with pulsed jets, is proposed to address the challenge of low mixing efficiency in supersonic combustion.
Keyu Li, Jiangfeng Wang, Yuxuan Gu
doaj   +1 more source

Numerical Investigation on the Effect of Blockage on the Icing of Airfoils

open access: yesAerospace, 2022
The blockage is one of the important factors affecting the icing of airfoils in wind tunnel tests. In this paper, numerical simulations are conducted to study the effect of blockage on the icing of different airfoils.
Daixiao Lu   +4 more
doaj   +1 more source

Unsteady transonic aerodynamics and aeroelasticity.

open access: yesJournal of the Japan Society for Aeronautical and Space Sciences, 1985
In recent years substantial progress has been made in the development of an improved understanding of unsteady aerodynamics and aeroelasticity in the transonic flow regime. This flow regime is often the most critical for aeroelastic phenomena; yet it has proven the most difficult to master in terms of basic understanding of physical phenomena and the ...
openaire   +2 more sources

Numerical Method for Aeroelastic Simulation of Flexible Aircraft in High Maneuver Flight Based on Rigid–Flexible Model

open access: yesApplied Sciences
Traditional elastic correction methods fail to address the significant aeroelastic interactions arising from unsteady flow fields and structural deformations during aggressive maneuvers.
Shuang Chen, Pengzhen He, Shuling Tian
doaj   +1 more source

Numerical Analysis of Unsteady Characteristics of the Second Throat of a Transonic Wind Tunnel

open access: yesAerospace, 2023
The unsteady characteristics of the second throat of a transonic wind tunnel have an important influence on the design and test of the wind tunnel. Therefore, the forced oscillation characteristics were studied by a numerical simulation method.
Chenghua Cong, Honggang Qin, Xingyou Yi
doaj   +1 more source

On Aerodynamic Models for Flutter Analysis: A Systematic Overview and Comparative Assessment

open access: yesApplied Mechanics, 2021
This work reviews different analytical formulations for the time-dependent aerodynamic load of a thin aerofoil and clarifies numerical flutter results available in the literature for the typical section of a flexible wing; inviscid, two-dimensional ...
Marco Berci
doaj   +1 more source

Investigation of the Unsteady External and Underhood Airflow of the DrivAer model by Dynamic Mode Decomposition Methods

open access: yesInternational Journal of Automotive Engineering, 2017
In this research, we conduct unsteady CFD to investigate the effect of engine bay flow on the steady and unsteady aerodynamics of the extended DrivAer model reproducing engine bay flow.
Daiki Matsumoto   +2 more
doaj   +1 more source

Numerical study of the switching mechanism of a jet valve using the meshless method

open access: yesAdvances in Mechanical Engineering, 2021
This study numerically investigates fluid dynamics of a jet flow at supersonic speed. The meshless method and the overlapping point cloud method are used to handle the moving boundary problems.
Jun Zhang   +4 more
doaj   +1 more source

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