Results 71 to 80 of about 14,718 (261)
IEEE AccessOne of the key technologies for achieving day and night flight, tracking solar peak, and reducing flight energy consumption for a near-space solar-powered unmanned aerial vehicle (UAV) is trajectory planning.
Tichao Xu +4 more
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Engineering Applications of Computational Fluid Mechanics, 2017 This article presents a numerical investigation of the effects of leading-edge protuberances on airfoil stall and post-stall performance. An improved delayed detached eddy simulation (IDDES) method was adopted.
Ming Zhao, Mingming Zhang, Jianzhong Xu
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Radiometric temperature analysis of the Hayabusa spacecraft re-entry [PDF]
, 2011 Hayabusa, an unmanned Japanese spacecraft, was launched to study and collect samples from the surface of the asteroid 25143 Itokawa. In June 2010, the Hayabusa spacecraft completed it’s seven year voyage. The spacecraft and the sample return capsule (SRC)
Buttsworth, D +6 more
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Evaporation‐Driven Solutal Marangoni Control of Rayleigh–Taylor Instability in Inverted Films
Advanced Science, EarlyView.Inverted liquid films, like paint on a ceiling, are inherently unstable under gravity. This work shows that selective evaporation in volatile binary mixtures generates solutal Marangoni stresses that either suppress or amplify the Rayleigh Taylor instability.
Minwoo Choi, Hyejoon Jun, Hyoungsoo Kim
wiley +1 more source
Design and analysis of centrifugal compressor in carbon dioxide heat pump system
Scientific ReportsBased on the advantages of energy saving, environmental protection and high efficiency, carbon dioxide heat pump system has great application prospects. However, there are still many technical problems to be solved, especially the design and optimization
Peng Jiang +3 more
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Netsu Bussei, 2007 AbstractThe thermal conductivity of the surface layer of engineering materials changes in the early stages of material degradation due to the appearance of micro‐cracks. A new method for evaluating and assessing the degree of degradation of a material using this change is proposed herein.
Kazunori Kato, Ichiro Takahashi
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Journal of Physics: Conference Series, 2020 Abstract Data on thermodynamic and transport properties of gases and liquids are necessary for many branches of science and technology. Such data are required in different systems of independent variables and in a wide range of values of these variables for design and study of various plants.
A A Vasserman, V P Malchevsky
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Unveiling a Bulk WTaV Multicomponent Alloy With Superior Thermal Properties and Manufacturability
Advanced Science, EarlyView.ABSTRACT Many tungsten (W)‐based medium and high entropy alloys (HEA) demonstrate superior microstructural stability and enhanced mechanical properties as compared to pure W, effectively rendering them as viable candidate materials for extreme environments such as nuclear fusion, aerospace applications, and so on.
Ishtiaque K. Robin +11 more
wiley +1 more source
Advanced Science, EarlyView.This study elucidates how steric hindrance in amines creates a dual effect in CO2 capture: it thermodynamically favors the reaction by shifting the pathway from carbamate to alkyl carbonate formation, increasing capacity and lowering regeneration heat, while simultaneously slightly slowing the kinetics.
Xiaoyi Gao +8 more
wiley +1 more source
ITEGAM- Journal of Engineering and Technology for Industrial Applications (ITEGAM-JETIA), 2020 Researches focusing on the development of biofuel production processes have increased significantly in recent years, mainly for environmental and economic issues. The identification of low-cost raw materials and the development of simulation models able to predict the conditions of production and the properties of the components may be the way to ...
Gisele Cristina Rabelo Silva +1 more
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