Results 61 to 70 of about 3,082,518 (143)

Aerothermodynamics issues of the DLR hypersonic flight experiment SHEFEX-I [PDF]

open access: yes, 2008
Here is presented an overview of the hypersonic experiment on sharp edge concepts, SHEFEX-I. The project, being performed under responsibility of the German Aerospace Center (DLR), is aimed to investigate the behavior and the possibilities of an improved
Eggers, Thino   +2 more
core  

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

open access: yesAdvanced Engineering Materials, Volume 28, Issue 16, 19 August 2026.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari   +4 more
wiley   +1 more source

Microstructure Tailoring of Laser Powder Bed Fused Nb521 Alloy Toward Strength‐Ductility Synergy

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Niobium‐based refractory alloys are promising candidates for high‐temperature aerospace structures, yet their limited ambient‐temperature ductility and poor processability remain major barriers to broader implementation. Here, Nb521 alloy was fabricated by laser powder bed fusion (LPBF), and the effects of processing conditions and subsequent ...
Lele Qin   +7 more
wiley   +1 more source

A “Tech First” Approach to Foreign Policy? The Three Meanings of Tech Diplomacy

open access: yesGlobal Policy, Volume 17, Issue S4, Page S45-S55, August 2026.
ABSTRACT Scholars have recently argued that international politics is plagued by instability as the world rapidly transitions from one crisis to another. This state of “Permacrisis,” or permanent crises between states, is driven by technological innovations which create new kinds of crises and drive competitions between adversarial states.
Ilan Manor
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

open access: yesAerospace
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   +3 more
doaj   +1 more source

Optimizing Cf/ZrB2–SiC Composites for Aerospace TPS via Density‐Normalized Performance

open access: yesInternational Journal of Applied Ceramic Technology, Volume 23, Issue 4, August 2026.
ABSTRACT In this study, the mechanical performance of ZrB2–SiC‐based carbon fiber‐reinforced composites was evaluated using a design‐oriented framework, focusing on the effects of fiber architecture (long/short fibers) and rheology modifier (RM) addition.
Asli Asiye Agil, Erhan Ayas
wiley   +1 more source

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

open access: yesAdvances 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   +3 more
doaj   +1 more source

Physics‐Aware AI‐Driven 4D Temperature Reconstruction With Enhanced Non‐Uniform Vertical Resolution in Near Space (20–80 km)

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Near‐space temperature is crucial for atmospheric dynamics and aerospace applications, yet data sets with refined vertical resolution remain scarce. We present the Atmospheric Spatio‐Temporal Reconstruction Network (AtmoST‐Net), which integrates high‐resolution SABER observations with dual‐source reanalysis, combining non‐uniform vertical ...
Huanwei Zhang, Yang He, Zheng Sheng
wiley   +1 more source

Delayed Detached Eddy Simulation of a Transverse Supersonic Jet into Hypersonic Crossflow

open access: yesSpace: Science & Technology
In both military and civil industries, the complex flow field induced by a jet exhausting has widespread applications, such as supersonic/hypersonic vehicle reaction control systems, thrust vector control systems on rocket motors, and supersonic ...
Jikui Ma, Yaofeng Liu, Yuwei Liu
doaj   +1 more source

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