Results 161 to 170 of about 615 (185)
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Progress in Canadian Mechanical Engineering. Volume 4, 2021
Kyle Graat +2 more
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Kyle Graat +2 more
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Physical and numerical modelling of thunderstorm downbursts
Journal of Wind Engineering and Industrial Aerodynamics, 2001Abstract In this study, a static continuous impinging jet has been used to simulate a thunderstorm downburst. Velocity characteristics have been investigated at various positions in the flow over flat terrain, and over simple topographic features, thereby yielding topographical speed-up factors. A generic empirical equation describing the development
Wood, Graeme S. +3 more
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Leonardo da Vinci and the Downburst
Bulletin of the American Meteorological Society, 1990Abstract Evidence from the drawings, experiments, and writings of Leonardo da Vinci are presented to demonstrate that da Vinci recognized and, possibly, discovered the downburst and understood its associated airflow. Other early references to vortex flows resembling downbursts are mentioned.
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Experimental Investigation of Downbursts in a Crossflow
AIAA Scitech 2021 Forum, 2021Skyler Jacob +3 more
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Feedback control for penetrating a downburst
Guidance, Navigation and Control Conference, 1987Feedback logic is given that produces satisfactory penetration of an aircraft through a severe downburst. The logic has two parts: (1) A switch that calls for full throttle and tight climb-rate-hold feedback logic when the magnitude of headwind-rate exceeds a threshold level; this switch stays on until re-set by the pilot after penetration of the ...
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DOWNBURSTS: Meteorological features and wind field characteristics
Journal of Wind Engineering and Industrial Aerodynamics, 1990Abstract Since the term “downburst” was coined by the author back in 1976, it has been subclassified into “microburst” and “macroburst” according to the horizontal dimension of the wind system. Introduced in this paper is the basic observational evidence of the microburst investigated by three fact-finding projects in 1978, 1982, and 1986, at three ...
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Thunderstorm downbursts: Windstorms and blowdowns
2021Matthew J. Bunkers, Mark R. Hjelmfelt
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Experimental study on the Downburst phenomenon
The Proceedings of Ibaraki District Conference, 2016Kengo NAGATSU, Kunihito MATUMURA
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