Results 121 to 130 of about 27,127 (216)
AtmosphereWind shear-induced aviation turbulence (WSAT) remains a major safety concern during approach and takeoff phases at complex terrain airports. This study develops an interpretable Explainable Boosting Machine (EBM) framework to classify WSAT events at Hong
Afaq Khattak +4 more
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Investigation of mesoscale cloud features viewed by LANDSAT [PDF]
The author has identified the following significant results. Some 50 LANDSAT images displaying mesoscale cloud features were analyzed. This analysis was based on the Rayleigh-Kuettner model describing the formation of that type of mesoscale cloud feature.
Barnes, J. C. +5 more
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Mission-oriented requirements for updating MIL-H-8501. Volume 1: STI proposed structure [PDF]
The structure of a new flying and ground handling qualities specification for military rotorcraft is presented. This preliminary specification structure is intended to evolve into a replacement for specification MIL-H-8501A. The new structure is designed
Ashkenas, I. L. +5 more
core +1 more source
Effects of Terrain-Induced Turbulence on Wind Turbine Blade Fatigue Loads
Effects of Terrain-Induced Turbulence on Wind Turbine Blade Fatigue LoadsRecently, the issue has surfaced that the availability factors for wind farms built on complex terrain are lower than the originally projected values. In other words, problems have occurred such as extreme decreases in generation output, failures of components inside and outside wind turbines including yaw motors and yaw gears, and cracking on wind ...
openaire
Unified results of several analytical and experimental studies of helicopter handling qualities in visual terrain flight [PDF]
The studies were undertaken to investigate the effects of rotor design parameters, interaxis coupling, and various levels of stability and control augmentation on the flying qualities of helicopters performing low-level, terrain-flying tasks in visual ...
Chen, R. T. N.
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High-Resolution LES of Terrain-Induced Turbulence around Wind Turbine Generators, by Using Turbulent Inflow Boundary ConditionsWe have developed an LES (Large-Eddy Simulation) code called RIAM-COMPACT (Research Institute for Applied Mechanics, Kyushu University, Computational Prediction of Airflow over Complex Terrain). The analysis do-main of this numerical model extends from several meters to several kilometers.
openaire
Aeronautical Engineering: A special bibliography with indexes, supplement 48 [PDF]
This special bibliography lists 291 reports, articles, and other documents introduced into the NASA scientific and technical information system in August ...
core +1 more source
CAT-generating mechanisms [PDF]
The development of instability configurations; the transition from unstable growth of these configurations into turbulence; a description of the nature of that turbulence; the question of decay of turbulence; and the existence of what is called fossil ...
Wurtele, Morton G.
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Numerical Investigation of Terrain-induced Turbulence in Complex Terrain by Large-eddy Simulation (LES) TechniqueIn the present study, field observation wind data from the time of the wind turbine blade damage accident on Shiratakiyama Wind Farm were analyzed in detail. In parallel, high-resolution large-eddy simulation (LES) turbulence simulations were performed in order to examine the model’s ability to numerically reproduce terrain-induced turbulence ...
openaire
Characterization of the Surface Energy Balance Residual in Complex Terrain. [PDF]
Boundary Layer MeteorolDestro M, Rotach MW, Lehner M.
europepmc +1 more source