scholarly journals Vision based autonomous docking for work class ROVs

2020 ◽  
Vol 196 ◽  
pp. 106840 ◽  
Author(s):  
Petar Trslic ◽  
Matija Rossi ◽  
Luke Robinson ◽  
Cathal W. O’Donnel ◽  
Anthony Weir ◽  
...  
Author(s):  
Alexander B. Phillips ◽  
Matthew Kingsland ◽  
Nick Linton ◽  
Will Baker ◽  
Leon Bowring ◽  
...  
Keyword(s):  
New Work ◽  

2021 ◽  
Vol 225 ◽  
pp. 108786
Author(s):  
Michael Binsar Lubis ◽  
Mehrdad Kimiaei ◽  
Mike Efthymiou
Keyword(s):  

2021 ◽  
Author(s):  
Michael Binsar Lubis ◽  
Mehrdad Kimiaei

Abstract Integrity and stability of Remotely Operated Vehicle (ROV) when passing through the splash zone is one of the main concerns in the design of an ROV-umbilical system. Due to the lightweight nature of ROV in water, the umbilical experiences repetitive rapid transitions between slack and taut as the ROV travels through the splash zone. These rapid transitions induce tension spikes in the umbilical, namely snap forces, that can endanger the launch and recovery of an ROV. Therefore, it is important to ensure that the tension spikes do not exceed the safe working load of the umbilical. In this study, launch and recovery of a deep-water work class ROV are experimentally investigated using a 1:10 scaled ROV model through a series of wave flume tests. Different regular and irregular waves are generated in the flume while the ROV model is hung over the flume in four different positions. The tension time-history in the line is measured and recorded using a load cell at the top-end of the line. A simplified numerical model for launch and recovery of the ROV is developed and the numerical results are compared with the experimental ones. It is shown that the presented simplified model can be accurately used for analysis of launch and recovery of the ROV.


Author(s):  
Jimi O. Adesina

This paper re-examines current thinking on worker-consciousness, and criticizes the prevailing reluctance to accommodate non-class identities in class subjectivity. Much of the problem with the discussion of worker-consciousness, the paper argues, is epistemological. Consciousness is both experiential and defined by ‘preconstituted’ knowledge. It is contradictory as much as it is a contested terrain of individual and group engagement with ‘reality1. The experience of work, and class, is mediated by non-work and non-class experiences and identities, otherwise we miss the territoriality of class. Understanding workers as producers of knowledge allows an appreciation of how language, is itself, constitutive of identity and consciousness.


Author(s):  
Szymon Krupinski ◽  
Francesco Maurelli ◽  
Gabriel Grenon ◽  
Yvan Petillot
Keyword(s):  

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