Results 31 to 40 of about 45,044 (305)

Modern Airfoil ice accretions [PDF]

open access: yes35th Aerospace Sciences Meeting and Exhibit, 1997
This report presents results from the first icing tests performed in the Modem Airfoils program. Two airfoils have been subjected to icing tests in the NASA Lewis Icing Research Tunnel (IRT). Both airfoils were two dimensional airfoils; one was representative of a commercial transport airfoil while the other was representative of a business jet airfoil.
Harold Addy   +5 more
openaire   +1 more source

Quantifying the Importance of Ice-Rafted Debris to Salt Marsh Sedimentation Using High Resolution UAS Imagery

open access: yesRemote Sensing, 2022
Salt marshes are vulnerable to sea-level rise, sediment deficits, and storm impacts. To remain vertically resilient, salt marshes must accrete sediment at rates greater or equal to sea-level rise. Ice-rafted debris (IRD), sediment that has been moved and
Sarah Stopak   +2 more
doaj   +1 more source

Fast Prediction of Multiple Parameters Related to Iced Airfoil Based on POD and Kriging Methods [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Ice accretion threatens aircraft safety. With the wide application of unmanned aerial vehicles (UAVs), the design of ice-tolerant UAVs has become a problem that must be solved.
J. Niu   +5 more
doaj   +1 more source

Analysis of the Characteristics of Ice Accretion on the Surface of Wind Turbine Blades Under Different Environmental Conditions

open access: yesAtmosphere
The problem of ice accretion on wind turbine blades seriously affects the safe operation and efficiency of wind farms. In this paper, FENSAP-ICE software is adopted to conduct research on this issue.
Tingzhu Qian   +6 more
doaj   +1 more source

Investigation of surface water behavior during glaze ice accretion [PDF]

open access: yes, 1989
A series of experimental investigations that focused on isolating the primary factors that control the behavior of unfrozen surface water during glaze ice accretion were conducted.
Hansman, R. John, Jr.   +1 more
core   +2 more sources

Greenland Ice Sheet Ice Slab Expansion and Thickening

open access: yesGeophysical Research Letters, 2023
We use airborne accumulation radar data acquired over the Greenland Ice Sheet between 2002 and 2018 to identify changes in ice slab extent and thickness. We show that ice slabs several meters thick were already present at least as early as 2002.
N. Jullien   +4 more
doaj   +1 more source

Chemical Evolution in VeLLOs [PDF]

open access: yes, 2007
A new type of object called "Very Low Luminosity Objects (VeLLOs)" has been discovered by the Spitzer Space Telescope. VeLLOs might be substellar objects forming by accretion.
Lee, Jeong-Eun
core   +2 more sources

Study of Wind Flow Angle and Velocity on Ice Accretion of Transmission Line Composite Insulators

open access: yesIEEE Access, 2020
Ice accretion on insulators in cold regions is a serious and inevitable problem for power transmission lines, which may cause over-load and icing flashover accidents and can lead to wide power outage.
Yafei Huang   +2 more
doaj   +1 more source

Altitude Scaling of Ice Crystal Accretion

open access: yes5th AIAA Atmospheric and Space Environments Conference, 2013
This paper describes experiments performed in an altitude chamber at the National Research Council of Canada (NRC) as the first step towards developing altitude scaling laws and procedures that will possibly allow aero-engines to be certified for operation in ice crystal clouds at high altitude by testing in sea level facilities.
Currie, T.C.   +3 more
openaire   +2 more sources

Porosity formation during atmospheric ice accretion: measurements using micro-computed tomography

open access: yesJournal of Glaciology, 2021
Atmospheric ice accretion results from the exposure of technical equipment or facilities to cold and humid environments. Supercooled droplets in a cloud can impact an airplane's surface and quickly form an ice layer. The presence of air pockets in such a
Juan S. Velandia   +2 more
doaj   +1 more source

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