Results 1 to 10 of about 3,082,518 (143)

Flow Field Reconstruction of 2D Hypersonic Inlets Based on a Variational Autoencoder

Aerospace, 2023
The inlet is one of the most important components of a hypersonic vehicle. The design and optimization of the hypersonic inlet is of great significance to the research and development of hypersonic vehicles.
Zuwei Tan, Runze Li, Yufei Zhang
doaj   +3 more sources

3D Numerical Simulation and Structural Optimization for a MEMS Skin Friction Sensor in Hypersonic Flow [PDF]

Micromachines, 2022
The skin friction of a hypersonic vehicle surface can account for up to 50% of the total resistance, directly affecting the vehicle’s effective range and load.
Huihui Guo, Xiong Wang, Tingting Liu, Zhijiang Guo, Yang Gao   +4 more
doaj   +2 more sources

Ablation-Immune Thermal Armor Via Microstructural-Compatibility Design for Extreme Thermal Conditions. [PDF]

Adv Sci (Weinh)
This study unveils a microstructural‐compatibility design strategy that integrates reactive melt infiltration with plasma spraying to fabricate carbon fiber‐reinforced ZrC‐SiC composites. The deliberate incorporation of SiC into the ZrC coating releases heat accumulation, suppresses detrimental lamellar ZrO2 formation, and reduces residual stress. This
Ou H, Guo L, Liu B, Yi Z, Zhang Y, Sun J, Fu Q.   +6 more
europepmc   +2 more sources

Viscous equilibrium analysis of heat transfer on blunted cone at hypersonic flow

Case Studies in Thermal Engineering, 2019
High speed flow requires consideration of some complex phenomena such as chemical reactions. In fact, as flow velocity increase, high temperature of hypersonic velocity excites molecules to react and causes dissociation and ionization.
F. Pish, A. Hassanvand, M. Barzegar Gerdroodbary, S. Noori   +3 more
doaj   +3 more sources

Research on Star Sensor Imaging Simulation Under Near-Space Hypersonic Non-Equilibrium Flow Conditions [PDF]

Sensors
In order to address the difficulty in acquiring degraded images for star sensors under hypersonic conditions, this paper proposes a star sensor imaging simulation model which can effectively analyze the influence of thermochemical non-equilibrium flow on
Zhen Liao, Hongyuan Wang, Xi Cheng, Boqi Liu, Yunzhao Zang, Yinxi Lu, Shuai Yao, Zhiqiang Yan   +7 more
doaj   +2 more sources

Chemically Gradient Ordered Nanodomains Enable Large Tensile Ductility in Gigapascal Lightweight Refractory High-Entropy Alloys. [PDF]

Adv Sci (Weinh)
A high‐strength lightweight refractory high‐entropy alloy achieves extraordinary ductility owing to the introduction of coherent chemically gradient ordered nanodomains (CGONs). The CGONs not only serve as effective barriers to dislocation motion (strengthening) but also significantly promote dislocation nucleation and multiplication (ductilizing) upon
Zhang W, Yan D, Zhang Y, Li Z.
europepmc   +2 more sources

Micro-Ramps for Hypersonic Flow Control

Micromachines, 2012
Shock/boundary layer interaction (SBLI) is an undesirable phenomenon, occurring in high-speed propulsion systems. The conventional method to manipulate and control SBLI is using a bleed system that involves the removal of a certain amount of mass of the ...
Konstantinos Kontis, Azam Che-Idris, Hossein Zare-Behtash, Mohd R. Saad   +3 more
doaj   +3 more sources

Research progress on aero-optical effects of hypersonic optical window with film cooling [PDF]

Light: Science & Applications
In recent years, the demand for optical imaging and detection in hypersonic aircraft has been on the rise. The high-temperature and high-pressure compressed flow field near airborne optoelectronic devices creates significant interference with light ...
Shihe Yi, Haolin Ding, Suyiming Luo, Xiaobin Sun, Zihao Xia   +4 more
doaj   +2 more sources

Fundamentals of Thermal Transport and Energy Conversion in Ultra-High Temperature Ceramics: From Microscale Mechanisms to Macroscopic Properties. [PDF]

Adv Sci (Weinh)
This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Pei Z, Li Y, Xing J, Zhu Y, Zhang R, Wu H, Qin Z, Pei G, Li M.   +8 more
europepmc   +2 more sources

Shock Wave Intelligent Prediction Method for Hypersonic Vehicle

气体物理, 2023
Accurate prediction of shock wave position of hypersonic aircrafts can effectively improve the accuracy and efficiency of computational fluid dynamics (CFD) simulation.
Yuan-hao ZHU, Yue-qing WANG, Zhi-gong YANG, Guo-peng SUN, Wen-gang ZONG, Lei ZENG, Jian-qiang CHEN   +6 more
doaj   +1 more source