Results 121 to 130 of about 417,955 (336)
A Passive Low‐Frequency, High‐Sensitivity Diamagnetic Levitation Accelerometer
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Despite the great potential of diamagnetic levitation accelerometers in detecting low‐frequency and weak motion, there is still a demand to further enhance their sensitivity for geophysical and microgravity applications. In this study, a straightforward structural modulating approach is presented to enhance the sensitivity of diamagnetic ...
Yuanping Xu +5 more
wiley +1 more source
Engineering ProceedingsThe BulTrans International Scientific Conference on Aeronautics, Automotive, and Railway Engineering and Technologies is organized by the Faculty of Transport, Technical University of Sofia [...]
Krasin Georgiev, Svetla Stoilova
doaj +1 more source
Towards a renewal of the propeller in aeronautics [PDF]
The reasons for reconsidering the propeller for aircraft propulsion, the areas of application, and necessary developments are considered. Rising fuel costs and an increasing theoretical and experimental data base for turboprop engines have demonstrated ...
Berger, D., Jacquet, P.
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Culture Indicators in Global Aeronautical Communication
, 2020 Anna P. Borowska
openalex +2 more sources
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Digitalization and emerging technologies are increasing the demand for wireless sensing and the Internet of Things (IoT), which provide opportunities for autonomous sources of electricity in the form of energy harvesting systems. This paper focuses on the challenges in hybrid piezoelectric‐electromagnetic kinetic energy harvesting systems that
Petr Sosna, Damian Gaska, Zdeněk Hadaš
wiley +1 more source
Aeronautics and space report of the President, 1980 activities [PDF]
The year's achievements in the areas of communication, Earth resources, environment, space sciences, transportation, and space energy are summarized and current and planned activities in these areas at the various departments and agencies of the Federal ...
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A Comparative Study of the Heat Input During Laser Welding of Aeronautical Aluminum Alloy AA6013-T4
, 2018 Bruno N. Coelho +3 more
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People and Nature, EarlyView.Abstract Different aspects of ecological systems, biotic or abiotic, often fluctuate in coordinated patterns over space and time. Such high concordance between ecological processes is often referred to as ecological synchrony. Human activities, including and beyond climate change, have the potential to alter ecological synchrony by disrupting or ...
Yiluan Song +9 more
wiley +1 more source
Mechanical Behaviors and Damage Mechanisms of Metallic Materials
MetalsMetallic materials continue to be widely used across both traditional and advanced engineering sectors, including civil, marine, automotive, aeronautics, and aerospace, to name just a few [...]
Denis Benasciutti +2 more
doaj +1 more source
From Wallops Island to Project Mercury, 1945 - 1958: A memoir [PDF]
Research is described which was conducted at the Wallops Island Missile Range (operated by the old National Advisory Committee for Aeronautics).
Gilruth, R. R.
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