Browsing NTNU Open by Title
Now showing items 45000-45019 of 100943
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Ice ridge keel size distributions: Analysis of ice ridge keel thickness from Upward Looking Sonar data from the Fram Strait using extreme value theory.
(Master thesis, 2014)The present thesis explored sea ice ridges in the Fram Strait from data collected at 79 degrees N, 65 degrees W in 2006/2007 by an Upward Looking Sonar instrument, IPS4, and used extreme value analysis to provide an estimate ... -
Ice rose diagrams for probabilistic characterization of the ice drift behavior in the Beaufort Sea
(Journal article; Peer reviewed, 2022) -
Ice thickness estimates for design of structures
(Peer reviewed; Journal article, 2023)The level ice thickness is perhaps the most important ice property in both engineering and geophysics. Ice action from level ice scales almost linearly with ice thickness and the level ice thickness gives the mode in ice ... -
Ice-Ice and Ice-Steel Friction in Field and in Laboratory
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:300, Doctoral thesis, 2013)Friction is one of the key phenomena during the interaction of ice with offshore structures and ships, ice rafting and ridging processes, and the brittle compressive failure of ice. Therefore, knowledge of the ice friction ... -
Ice-Induced Loading on Ship Hull During Ramming
(Master thesis, 2012)As a result of the steadily increasing activities related to marine technology in Arctic regions, Det Norske Veritas has launched an ice load monitoring project to gather knowledge of the ice conditions and prevailing ... -
Ice-Induced Loads on Ship Hulls
(Master thesis, 2012)The calculation of ice-induced loads on ships is still mainly based on empirical models. In order to gain a better physical understanding of the loading on ice-going vessels, Det Norske Veritas launched an ice load monitoring ... -
Ice-induced vibrations of the Norströmsgrund lighthouse
(Journal article; Peer reviewed, 2018)The signature and occurrence of frequency lock-in (FLI) vibrations of full-scale offshore structures are not well understood. Although several structures have experienced FLI, limited amounts of time histories of the ... -
Ice-induced vibrations under continuous brittle crushing for an offshore wind turbine
(Master thesis, 2015)Offshore wind structures located in ice infested waters are subjected to actions from moving ice and forces are generated when a drifting ice crushes against the structure. The main purpose of this Master s thesis is to ... -
Ice-propeller impact analysis using an inverse propulsion machinery simulation approach
(Doctoral theses at NTNU;2019:235, Doctoral thesis, 2019) -
Iceberg ploughmarks illuminated by shallow gas in the central North Sea
(Journal article; Peer reviewed, 2014)Conventional 3D seismic data provides direct evidence for glacial influence during the early Pleistocenesedimentation in the Central North Sea. We identify iceberg ploughmarks as dim linear to curve-linearfeatures in three ... -
Iceberg shape characterization for damage assessment of accidental impacts with ships and offshore structures
(Master thesis, 2013)The northern areas are becoming more and more attractive because off the large oil and gas reservoir that is there. In this area there is a harsh environment and the possibility to collide with an iceberg increases as the ... -
Icebreakers - Visionary men and the visualization of climate change
(Journal article; Peer reviewed, 2017)When summing up the current state of affairs when it comes climate change awareness, author Eugene Linden stated that climate warnings are ‘heard, but not listened to’ (Linden 2015). In this article we discuss how, and to ... -
Iceland
(Chapter, 2017)Teaching children to read and write at home has been a general custom in Iceland from at least as early as the sixteenth century (Thorláksson 2003, pp. 186, 386). However, the development of a primary school system did not ... -
Icing Alert for Drone Pilots with an Airborne IoT Sensor Cluster
(Master thesis, 2022)Atmosfærisk ising er et velkjent fenomen in nordiske land. Ising av fly er en vedvarende trussel for luftfartøy, og har vært forsket på siden andre verdenskrig. Ettersom at etterspørselen for bruk av droner på vinterstid ... -
Icing Detection and Identification for Unmanned Aerial Vehicles using Adaptive Nested Multiple Models
(Journal article; Peer reviewed, 2017)A multiple-model approach for icing diagnosis and identification in small unmanned aerial vehicles is proposed. The accretion of ice layers on wings and control surfaces modifies the shape of the aircraft and, consequently, ... -
Icing Detection for Small Fixed Wing UAVs using Inflight Aerodynamic Coefficient Estimation
(Peer reviewed; Journal article, 2019)In cold and humid environments, airfoil icing is a major hindrance to UAV operations. Airfoil icing increases the aerodynamic drag coefficient, while reducing the maximum lift coefficient and the stall angle. This results ... -
Icing detection for small fixed wing UAVs using inflight aerodynamic coefficient estimation
(Chapter, 2016)We propose a method to detect icing of the airfoil of a fixed-wing Unmanned Aerial Vehicle by using an aerodynamic coefficient estimator and ambient temperature and humidity sensors. The estimator uses the information ... -
Icing Detection on Leading Edge of Aircraft Wings
(Master thesis, 2016)In recent years, the use of UAVs has increased significantly, both for commercial and private use. UAVs are particularly favorable in situations where other alternatives are impractical, or poses a threat to human lives, ... -
Icing diagnosis in unmanned aerial vehicles using an LPV multiple model estimator
(Journal article; Peer reviewed, 2017)The phenomenon of icing, i.e. ice accretion on aircraft surfaces, affects the flight performance of unmanned aerial vehicles (UAVs). Autonomous icing detection schemes are needed in order to assure high efficiency and limit ... -
Icing on overhead power lines
(Master thesis, 2022)Ising på kraftlinjer kan skape problemer og risikoen er økende med tanke på klimaendringene. Å tilby effektive metoder for avising vil være essensielt for å unngå strømbrudd. Dagens metoder er ikke uten risiko for strømbrudd. ...