Results 51 to 60 of about 8,165 (229)

High‐Entropy Materials for Electromagnetic Wave Absorption and EMI Shielding

MetalMat, Volume 2, Issue 4, December 2025.
This review unravels how compositional design, microstructure, and synthesis of high‐entropy materials converge to govern electromagnetic performance. It outlines critical knowledge gaps and future directions for EM absorption and shielding technologies.
Erdem Tevfik Özdemir, Mustafa Erol, Murat Alkan   +2 more
wiley   +1 more source

A Data‐Driven Approach to Integrated Adaptive Morphing and Guidance for Cruise Missiles

International Journal of Mechanical System Dynamics, Volume 5, Issue 4, Page 670-693, December 2025.
ABSTRACT To address the complex coupling between aerodynamic characteristics and guidance control for morphing flight missiles, this study proposes a data‐driven approach to integrated adaptive morphing and guidance. Firstly, an aerodynamic surrogate model is constructed using a fully connected neural network (FCNN), mapping the configuration ...
Ming‐Yu Wu, Jiang‐Liu Huang, Xiao‐Wei Cai, Xian‐Jun He, Zhi‐Hua Chen, Chun Zheng, Yi‐Xin Liu   +6 more
wiley   +1 more source

A Comprehensive Review of Additive Manufacturing for Space Applications: Materials, Advances, Challenges, and Future Directions

Advanced Engineering Materials, Volume 27, Issue 22, November 2025.
Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos, Eleni Papadopoulou, Grigorios Kostopoulos, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria Gkara, Chara C. Mitropoulou, Nikos D. Lagaros   +8 more
wiley   +1 more source

Study on Oil-Film Interferometry Measurement Technique of Hypersonic Boundary Layer Transition [PDF]

Xibei Gongye Daxue Xuebao, 2018
Prediction of boundary layer transition is important for the design of hypersonic aircrafts. The study of boundary layer transition of hypersonic flow around a flat plate using oil-film interferometry was investigated at Φ500mm traditional hypersonic ...

doaj   +1 more source

Semi‐Analytical Guidance for Velocity Maximization of Gliding Vehicles Using Proportional Navigation and Sparse Waypoints

Optimal Control Applications and Methods, Volume 46, Issue 6, Page 2829-2842, November/December 2025.
ABSTRACT This study proposes a semi‐analytical guidance strategy for gliding vehicles by integrating proportional navigation (PN) with sparse waypoint optimization to maximize terminal velocity. Utilizing the analytical solution of PN with a navigation constant of three, the original optimal control problem is transformed into a low‐dimensional ...
Cheol‐Goo Jung, Chang‐Hun Lee
wiley   +1 more source

Third or “Second and a Half”? Continuity, Path Dependence, and the Third Nuclear Age

Global Policy, Volume 16, Issue 5, Page 934-944, November 2025.
ABSTRACT The world has entered a new nuclear age. Scholars have characterized this “third nuclear age” as one of renewed competition among nuclear‐armed great powers and the coming maturation of new technologies. I trace the origins of the new nuclear age. Focusing primarily on US strategies with two case studies on conventional strike capabilities and
Jan Ludvik
wiley   +1 more source

Slip casting porous silicon nitride for high‐temperature radar frequency radomes

International Journal of Applied Ceramic Technology, Volume 22, Issue 6, November/December 2025.
Abstract Silicon nitride (Si3N4) is a promising candidate for ceramic radar frequency (RF) radomes. In this study, suspensions have been developed to slip cast Si3N4 for RF windows utilizing 6 wt.% yttrium oxide (Y2O3)‐2 wt.% aluminum oxide (Al2O3) and 5–15 wt.% ytterbium oxide sintering aids.
Averyonna R Kimery, Matthew A Thompson, Carlos J Martinez, Rodney W Trice   +3 more
wiley   +1 more source

Effect of WC addition on the mechanical properties and oxidation resistance of ZrB2/SiC‐based UHTCMCs

International Journal of Applied Ceramic Technology, Volume 22, Issue 6, November/December 2025.
Abstract The sintering behavior, mechanical properties, and oxidation resistance of carbon fiber reinforced ZrB2/SiC/WC composites were investigated. Sintering was carried out between 1800 and 2000°C via hot pressing at 40 MPa. WC was completely consumed in the process, and the resulting microstructure was characterized by the formation of Zr1−xWxC ...
Antonio Vinci, Matteo Mor, Luca Zoli, Diletta Sciti   +3 more
wiley   +1 more source

Research on the Zooming Method for Determining the Flow, Heat Transfer, and Infrared Radiation of an Air-Breathing Hypersonic Vehicle Powered by a Scramjet

Aerospace
In order to study the infrared radiation characteristics of an air-breathing hypersonic vehicle powered by a scramjet, it is necessary to solve the internal and external flow field of the air-breathing hypersonic vehicle.
Xin Wei, Xiaojuan Shi, Honghu Ji, Jinlong Hu   +3 more
doaj   +1 more source

Numerical Analysis of Supersonic Film Cooling in Supersonic Flow in Hypersonic Inlet with Isolator

Advances in Mechanical Engineering, 2014
Supersonic film cooling is an efficient method to cool the engine with extremely high heat load. In order to study supersonic film cooling in a real advanced engine, a two-dimensional model of the hypersonic inlet in a scramjet engine with supersonic ...
Silong Zhang, Jiang Qin, Wen Bao, Long Zhang   +3 more
doaj   +1 more source