Results 51 to 60 of about 80,594 (224)

Nonlinear Conductive Graphene Composites for Pressure Sensing with a Linear Response and Voltage‐Driven Thermal Correction

Advanced Materials, Volume 37, Issue 32, August 14, 2025.
A nonlinear conductive graphene composite (NcGc) layer, incorporating a conductive laser‐reduced graphene oxide layer, is assembled into flexible pressure sensors without microstructural designs, achieving high sensitivity (742.3 kPa−1) and a wide linear sensing range (>800 kPa).
Feng Luo, Artur Ciesielski, Paolo Samorì   +2 more
wiley   +1 more source

Transition in hypersonic boundary layers

AIP Advances, 2015
Transition and turbulence production in a hypersonic boundary layer is investigated in a Mach 6 wind tunnel using Rayleigh-scattering visualization, fast-response pressure measurements, and particle image velocimetry.
Chuanhong Zhang, Yiding Zhu, Xi Chen, Huijing Yuan, Jiezhi Wu, Shiyi Chen, Cunbiao Lee, Mohamed Gad-el-Hak   +7 more
doaj   +1 more source

Graphene‐Based Pressure Sensor Application in Non‐Invasive Pulse Wave Velocity Continuous Estimation

Advanced Materials Technologies, Volume 10, Issue 5, March 4, 2025.
A non‐invasive device prototype for pulse wave velocity (PWV) measurement is presented, based on a piezoelectric graphene pressure sensor incorporating advanced electronic components and data analysis tools. Tests performed within clinical environment, showed statistical similarity to results obtained using the established standard for PWV estimation ...
Irene Buraioli, Stefania Vitale, Andrea Valerio, Alessandro Sanginario, Dario Leone, Sabrina Conoci, Artur Ciesielski, Alberto Milan, Danilo Demarchi, Paolo Samorì   +9 more
wiley   +1 more source

A Review of Research on the Thermo‐Force Characteristics of Scramjet Engine Wall Based on Neural Networks

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
With the development of high‐performance computing and advanced experimental methods, data‐driven machine learning, especially neural network technology, has shown great potential in fluid mechanics research and has become a fourth paradigm research tool.
Chen Qi, Wang Chenglong, Li Binhao, Lin Yuan, Zhou Zibo, Jin Wenzhong, Geng Chen   +6 more
wiley   +1 more source

Design and Applications of Preliminary Evaluation Platform of Aerodynamic Forces for Supersonic/Hypersonic Vehicles [PDF]

Xibei Gongye Daxue Xuebao, 2018
Rapid evaluation of aerodynamic forces is a key technology in conceptual and preliminary performance assessment and design optimization for supersonic/hypersonic vehicles, which is expected to achieve a balance between accuracy and time.

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

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

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

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