Results 51 to 60 of about 247,344 (269)
Experimental phase equilibria at 1500 °C and microhardness in the Cr–Ta–W system
Chimica Techno ActaPhase equilibria in the Cr–Ta and Cr–Ta–W systems were investigated using a combination of SEM, EPMA, and XRD techniques. The Cr–Ta system was refined, including the eutectic coordinates and the solubility range of the TaCr2 phase. The isothermal section
Semen Kuzovchikov +4 more
doaj +1 more source
Advanced Materials, EarlyView.Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley +1 more source
Indoor Radar Cross Section Measurements of Simple Targets
Journal of Aerospace Technology and Management, 2012 This paper has described the radar absorbing materials characterization and radar cross section measurements, in the frequency range of 8 to 12 GHz, using a very simple setup.
Marcelo Alexandre Souza Miacci +4 more
doaj +1 more source
Development of GaN Technology-Based DC/DC Converter for Hybrid UAV
IEEE Access, 2020 Wide band-gap (WBG) semiconductors technology represents a potential candidate to displace conventional silicon (Si) technology used in power electronics.
Juana M. Martinez-Heredia +5 more
doaj +1 more source
Low-energy particle radiation environment at synchronous altitude [PDF]
, 1972 The degradation of thermal control coatings of satellites due to the effects of low energy charged particles in the space environment is discussed. Data obtained from ATS-5 satellite measurement of proton and electron fluxes are presented. The variations
Lens, S. K., Shelley, E. G.
core +1 more source
Large scale optimization of transonic axial compressor rotor blades [PDF]
, 2008 [First Paragraphs] In the present work the Multipoint Approximation Method (MAM) by Toropov et al. (1993) has been applied to the shape optimization of an existing transonic compressor rotor (NASA rotor 37) as a benchmark case.
Polynkin, A., Shahpar, S., Toropov, V.
core +1 more source
Advanced Materials, EarlyView.A machine learning‐guided bio‐interfacial design strategy resolves the long‐standing strength–toughness–functionality trade‐off in nanocomposites. By efficiently mapping high‐performance regions in the composition–processing space, the approach delivers hierarchically entangled, nanosheet‐pinned architectures that combine mechanical robustness ...
Hao Wang +10 more
wiley +1 more source
Coupled flight dynamics and CFD - demonstration for helicopters in shipborne environment [PDF]
, 2017 The development of high-performance computing and computational fluid dynamics methods have evolved to the point where it is possible to simulate complete helicopter configurations with good accuracy.
Barakos, G.N., Crozon, C., Steijl, R.
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Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization
Advanced Materials Interfaces, EarlyView.Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan +6 more
wiley +1 more source
Adaptive and Online Health Monitoring System for Autonomous Aircraft [PDF]
, 2012 Good situation awareness is one of the key attributes required to maintain safe flight, especially for an Unmanned Aerial System (UAS). Good situation awareness can be achieved by incorporating an Adaptive Health Monitoring System (AHMS) to the aircraft.
Howe, Joe M. +3 more
core +1 more source