Results 51 to 60 of about 81,739 (264)

Investigation of Flow Field in a Typical Hypersonic Wind Tunnel over a Standard Mode

Journal of Applied Fluid Mechanics, 2013
In order to start designing a new hypersonic wind tunnel, it is important to have a pre-view about physical phenomena in a typical Hypersonic Wind Tunnel (HWT).
fata mohammadifard, mahdi karami, M.R Heidari   +2 more
doaj  

Correlation Analysis of Separation Shock Oscillation and Wall Pressure Fluctuation in Unstarted Hypersonic Inlet Flow

Aerospace, 2019
The flow field in a hypersonic inlet model at a design point of M = 6 has been studied experimentally. The focus of the current study is to present the time-resolved flow characteristics of separation shock around the cowl and the correlation between the
Chengpeng Wang, Xin Yang, Longsheng Xue, Konstantinos Kontis, Yun Jiao   +4 more
doaj   +1 more source

A Review on High‐Speed Electromagnetic Flow Control and Applications Considering Numerical Methods, Simulations, and Experimental Research Data

International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
Background: Electromagnetic flow control is crucial in hypersonic gas dynamics, with key aspects of boundary layer electromagnetic flow control reviewed, focusing on numerical methods, simulations, and experimental research. Numerical Methods: Challenges such as numerical stiffness and instability arise from the coupling of electromagnetic fields with ...
Yang Du, Jun Liu, Hao Chen
wiley   +1 more source

Minimizing Aero‐Optic Effects on UAV Camera Systems: A Numerical and Design Approach

Modelling and Simulation in Engineering, Volume 2025, Issue 1, 2025.
This article delves into the challenges of aero‐optics, specifically focusing on how thermal and density variations in fluid flow around UAV‐mounted cameras can disrupt imaging accuracy. Turbulent eddies created by the camera enclosure cause light refraction, affecting camera positioning, trajectory, and image quality.
Ali Esmaeili, Mohammad Hossein Moghimi Esfandabadi, Kamyab Karbasishargh, Mahyar Najafian, Franco Ramírez   +4 more
wiley   +1 more source

A numerical oxidation model for SiC‐coated thermal protection systems in hypersonic applications

Journal of the American Ceramic Society, Volume 107, Issue 11, Page 7237-7252, November 2024.
Abstract Silicon carbide (SiC) is a widely used component for thermal protection system (TPS) design. This material is often used either as a coating layer to protect beneath carbon‐based material against oxidation or as a ceramic matrix for composite materials used in the hypersonic leading edges.
Vincent Le Maout, Yosheph Yang, Hojun You, Jae Gang Kim   +3 more
wiley   +1 more source

Machine Learning‐Based Backpressure Unstart Prediction and Warning Method for Combined Cycle Engine Hypersonic Inlet‐Oriented Wide Speed Range

International Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.
Inlet unstart prediction and warning are strictly crucial to the operation of hypersonic engines, especially for combined cycle engines where implementation across a wide speed range poses significant challenges. This paper proposes a realization method that involves constructing the conditions of critical backpressure ratios for the inlet unstart and ...
Ke Min, Tanbao Hong, Zejun Cai, Lianchen Yu, Chengxiang Zhu, Jianping Zeng, Gautam Choubey   +6 more
wiley   +1 more source

Experiment and simulation of electron density distribution in discharge plasma at hypersonic speed

AIP Advances, 2023
Pulsed discharge can generate high density and high dynamic plasma, which has promising application prospects in the field of stealth technology for high-speed aircraft.
Xin Liu, Jia Zhang, Cheng Luo, Mengjia Dang, Mengjiao Lin, Pengfei Zhang   +5 more
doaj   +1 more source

Online Identification of Aerodynamic Parameters of Experimental Rockets Based on Unscented Kalman Filtering

International Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.
Online identification of aerodynamic parameters of experimental rockets was completed based on unscented Kalman filtering (UKF). Numerical simulation, hardware‐in‐the‐loop (HIL) simulation, and flight tests were conducted. The identification error of aerodynamic force in numerical simulation and HIL simulation is within 2%.
Xiaobin Tang, Zhenyu Jiang, Hao Chen
wiley   +1 more source

Inversion of electron densities in plasma wakes of hypersonic targets

Results in Physics
Focusing on the plasma wakes of hypersonic targets (PWHT), this work provides a method for the inversion of electron densities in the PWHT by integrating electromagnetic radiation theory and three-wave coupling theory (TWCT).
Jiachen Tong, Haiying Li, Bin Xu, Lu Bai, Songyang Wu, Yu Shi   +5 more
doaj   +1 more source

Numerical Investigation of Model Support, Closed Engine Nacelle and Scale Effect on a Wind Tunnel Test Model

Aerospace
In the frame of the H2020 MORE&LESS project co-funded by European Commission, a test campaign for a hypersonic vehicle demonstrator took place at the INCAS Trisonic Facility. CFD analysis was used to quantify the effects of the wind tunnel model support,
Ioan-Laurentiu Padureanu, Dumitru Pepelea, Gilbert Stoican, Marco Marini, Nicole Viola, Matthew Clay   +5 more
doaj   +1 more source