Results 1 to 10 of about 2,211,858 (267)

Exploring the Performance Boundaries of a Small Reconfigurable Multi-Mission UAV through Multidisciplinary Analysis

open access: yesAerospace, 2023
The performance of a small reconfigurable unmanned aerial vehicle (UAV) is evaluated, combining a multidisciplinary approach in the computational analysis of additive manufactured structures, fluid dynamics, and experiments.
Dioser Santos   +3 more
doaj   +1 more source

Suppressing Uncommanded Roll-Yaw Motion by Jet Flow Control Based on Reinforcement Learning

open access: yesInternational Journal of Aerospace Engineering, 2023
The suppression of uncommanded motion of aircraft at high angles of attack (α) is a research topic of continuous concern in the aviation field. Aiming at the suppression of uncommanded roll-yaw motion of a canard aircraft at high angles of attack, an ...
Yizhang Dong   +3 more
doaj   +1 more source

Investigation of Aeroelasticity Effect on Missile Separation from the Internal Bay

open access: yesInternational Journal of Aerospace Engineering, 2023
There is a strong aerodynamic interference when launching the missile in the embedded mode. During the separation process, the carrier aircraft safety may be threatened due to large slenderness ratio, low structural stiffness, and aeroelasticity effects ...
Shuling Tian, Rongjie Li, Ke Xu
doaj   +1 more source

Triggering Shock Wave Positions by Patterned Energy Deposition

open access: yesEnergies, 2022
The problem considered in this work is shock wave (SW) positioning control in shock-dominated flows. Experiments are conducted to investigate the triggering effect of patterned near-surface electrical discharges on SW reflection from plane walls.
Philip Andrews   +2 more
doaj   +1 more source

Aerodynamic Characteristics of Radar Antenna in Stationary and Azimuthal Rotational Motion

open access: yesInternational Journal of Antennas and Propagation, 2021
To study the effects of aerodynamic loads on the aerodynamic characteristics of stationary and azimuthally rotating antennas, wind tunnel force tests are conducted using solid and porous plate antennas.
Yanqi Zhang, Zhaoming Zhang
doaj   +1 more source

A Numerical Investigation of Supersonic Combustion Flow Control by Nanosecond-Pulsed Actuations

open access: yesEnergies, 2023
The efficiency of supersonic combustion is largely dependent on inlet and injection parameters. Additional energy input is required in some off-design conditions, and nanosecond discharge actuation can be a solution.
Yilun Yan   +3 more
doaj   +1 more source

Flow Characterization at Heated Air Supersonic Facility SBR-50

open access: yesFluids, 2022
The supersonic wind tunnel facility SBR-50 at the University of Notre Dame was built in 2015 for experimental research related to shock wave (SW) interactions with obstacles and boundary layers (BL) as well as supersonic combustion and a plasma-based ...
Philip Andrews   +4 more
doaj   +1 more source

Experimental Study on Dynamic Aerodynamic Characteristics of Different Antenna Aspect Ratios with Reduced Frequency

open access: yesInternational Journal of Antennas and Propagation, 2022
Radar antennas in the open air are affected by dynamic wind loading during azimuthal scanning. In this state, the acquisition and prediction of the aerodynamic load is the focus of the structure design for the antenna.
Yanqi Zhang, Zhaoming Zhang
doaj   +1 more source

Application of a Gas-Kinetic BGK Scheme in Thermal Protection System Analysis for Hypersonic Vehicles

open access: yesEntropy, 2022
One major problem in the development of hypersonic vehicles is severe aerodynamic heating; thus, the implementation of a thermal protection system is required.
Di Zhou   +4 more
doaj   +1 more source

Numerical Simulation of Heat Reduction With Use of Spike in Hypersonic Flow Based on Gas Kinetic Scheme

open access: yes气体物理, 2023
Based on the gas kinetic scheme (GKS), numerical simulation research on the thermal protection system with the spike was carried out from the independent flow field and the fluid-structure interaction. The reliability of the algorithm in independent flow
Chang-ya LIU   +3 more
doaj   +1 more source

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