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Highly Repeatable Rope Winch Design with Multiple Windings and Differential Gear Mechanism

Sungkeun Yoo, Taegyun Kim, Myoungjae Seo, Joohyun Oh, Jongwon Kim, Hwa Soo Kim, TaeWon Seo
2020 IEEE Access  
This paper presents a rope winch with high position repeatability using a differential gear mechanism.  ...  INDEX TERMS Rope winch, differential gear mechanism, position repeatability, capstan equation, rope tension modeling.  ...  Therefore, when descending using the winch of a double winding rope with a differential gear mechanism, the tension distribution of the pulleys has the shape shown in Fig. 15 .  ... 
doi:10.1109/access.2020.2992674 fatcat:k33rr6ckhzervollkvqr5hssqu

Review of the state of the art of mooring and anchoring designs, technical challenges and identification of relevant DLCs [article]

Maria Ikhennicheu, Mattias Lynch, Siobhan Doole, Friedemann Borisade, Denis Matha, Jose Luis Domínguez-García, Ruben Durán Vicente, Tim Habekost, Lizet Ramirez, Sabina Potestio, Climent Molins, Pau Trubat
2020 Zenodo  
This deliverable deals with defining current mooring and anchoring state of the art for floating wind projects currently installed or in construction phase.  ...  Aim is to ensure specifications and requirements to be developed within mooring  ...  Polyester rope is not only highly competitive in cost, but also offers longer fatigue life than wire rope.  ... 
doi:10.5281/zenodo.4056095 fatcat:wv3gebz5jfhabfkphouc44wmra

Electric Propulsion of Ships

W. E. Thau
1921 Transactions of the American Institute of Electrical Engineers  
The deck winches largely used in this country, those with series motor and small shunt winding with spur reduction gear and manual control are simple and efficient and have been developed to a high degree  ...  The subject of rope speeds in handling cargo with deck winches is a very important one, on which there is a great divergence of opinion, there being but little reliable data and records available.  ...  In larger ships with deeper holds it may be found desirable to somewhat increase the rope speed and fit a larger motor. The horse power rating of a winch motor is not definite.  ... 
doi:10.1109/t-aiee.1921.5060749 fatcat:vqjdc5dbr5epjbyzqineoikzhu

Discussion on "fields of motor application" (Rushmore), and "electricity in grain elevators" (Stafford), Deer Park, Md., June 29, 1915. (see proceedings, for June, 1915)

1915 Proceedings of the American Institute of Electrical Engineers  
winch with crank throttle, foot brake and re verse mechanism.  ...  Motoroperated machines for the handling of bulk freight are: Various forms of derricks operated by multiple drum and often multiple motor winches.  ...  auxiliary work such as checking, weighing and in specting, that interfere with uniform results.  ... 
doi:10.1109/paiee.1915.6590689 fatcat:cxv7up4t6fglnpbjffp3jxtqui

Electricity in Grain Elevators

H. E. Stafford
1915 Transactions of the American Institute of Electrical Engineers  
With the use of steam power this is impossible.  ...  In addition it gives the details of different plants as regards construction and operation and the method of receiving and shipping grain.  ...  winch with crank throttle, foot brake and reverse mechanism.  ... 
doi:10.1109/t-aiee.1915.4765257 fatcat:yjd77rcqzbh3pjph37nvngy43y

LiftWEC Deliverable D7.1: Operational Design Considerations

Brian Flannery
2020 Zenodo  
The information herein was by and large sourced from telephone interviews of a number of developers, with experience in areas such as offshore wind, wave, tidal and oil & gas.  ...  This report summarises best practice guidelines and design considerations, for offshore operations.  ...  The oil and gas industry insists on redundancy in mooring design whereas offshore wind does not. Consequently in floating wind you have bigger lines with a factor of safety design in.  ... 
doi:10.5281/zenodo.5645436 fatcat:cqyxvri4qjhevoy6wxc6kouauu

Power conversion mechanisms for wave energy

S H Salter, J R M Taylor, N J Caldwell
2002 Journal of Engineering for the Maritime Environment (Part M)  
This leads on to a description of a new type of hydraulic machine with digital control which has been specially designed for high efficiency and flexible control of multiple erratic sources.  ...  wind-tunnel with recirculating energy recovery in which it could be tested.  ...  Rotating inputs, either directly or via rope and winch, will resolve range problems but largediameter winches and multiple cables will be needed to reduce bending fatigue. 10.  ... 
doi:10.1243/147509002320382103 fatcat:vp7d75b7erbedpoqo73c5d2o2i

Power conversion mechanisms for wave energy

S H Salter, J R M Taylor, N J Caldwell
2002 Journal of Engineering for the Maritime Environment (Part M)  
This leads on to a description of a new type of hydraulic machine with digital control which has been specially designed for high efficiency and flexible control of multiple erratic sources.  ...  wind-tunnel with recirculating energy recovery in which it could be tested.  ...  Rotating inputs, either directly or via rope and winch, will resolve range problems but largediameter winches and multiple cables will be needed to reduce bending fatigue. 10.  ... 
doi:10.1243/147509002320382112 fatcat:gsgl7np6kjbfdfj5eerdfhgqqe

Volcanological applications of unoccupied aircraft systems (UAS): Developments, strategies, and future challenges

Mike James, Brett Carr, Fiona D'Arcy, Angela Diefenbach, Hannah Dietterich, Allesandro Fornaciai, Einat Lev, Emma Liu, David Pieri, Mel Rodgers, Benoît Smets, Akihiko Terada (+4 others)
2020 Volcanica  
In the future, UAS will become increasingly capable of flying longer and more complex missions, more autonomously and with more sophisticated sensors, and are likely to become key components of broader  ...  sensor networks for monitoring and research.  ...  The paper was substantially improved following constructive and insightful reviews from Peter Kelly and two anonymous reviewers, to whom we are very grateful.  ... 
doi:10.30909/vol.03.01.67114 fatcat:bnpovf657jaetp4e7v6bejp3y4

Sixth aerospace mechanisms symposium

1971 Journal of Mechanisms  
Distribution Statement Spacecraft Mechanisms Spacecraft components Spacecraft devices Mechanism design Unclassified -Unlimited .  ...  This exception was a potentiometer, which failed for reasons not associated with either design or selection of materials.  ...  Barnes (packaging), and G. Weed (gimbal assembly design). The CMG Assembly was developed under contract to the Martin Marietta Corporation for the National Aeronautics and Space Administration.  ... 
doi:10.1016/0022-2569(71)90025-5 fatcat:iznya3slufeltdcyaertndg6au

The quest for seafloor macrolitter: a critical review of background knowledge, current methods and future prospects

Miquel Canals, Christopher K. Pham, Melanie Bergmann, Lars Gutow, Georg Hanke, Erik van Sebille, Michela Angiolillo, Lene Buhl-Mortensen, Alessando Cau, Christos Ioakeimidis, Ulrike Kammann, Lonny Lundsten (+16 others)
2020 Environmental Research Letters  
It provides background knowledge and conveys the views and thoughts of scientific experts on seafloor marine litter offering a review of monitoring and ocean modelling techniques.  ...  Knowledge gaps that need to be tackled, data needs for modelling, and data comparability and harmonisation are also discussed.  ...  /why-choose-dyneema-rope-vs-s teel-wire-rope-for-heavy-duty-rigging/) used in fishing gear and other marine applications, are suspected to degrade very slowly where oxygen is scarce and light absent, such  ... 
doi:10.1088/1748-9326/abc6d4 fatcat:dhwdzirlwzb67mzm7qexfsq4uu

100 Years of Progress in Ocean Observing Systems

Russ E. Davis, Lynne D. Talley, Dean Roemmich, W. Brechner Owens, Daniel L. Rudnick, John Toole, Robert Weller, Michael J. McPhaden, John A. Barth
2019 Meteorological Monographs  
Understanding was emerging of the specific mechanisms for tropical Pacific surface temperatures to respond to varying trade winds (e.g., Wyrtki 1975b) and how tropical sea surface 3.2  ...  The Mid-Ocean Dynamics Experiment (MODE) addressed mesoscale "eddies" and their interaction with larger-scale currents using new ocean modeling and experiment design techniques and a suite of developing  ...  Russ Davis, Dean Roemmich, Dan Rudnick, Robert Weller, and Michael McPhaden acknowledge the NOAA Climate Program Ocean Observing and Monitoring program for support of this effort.  ... 
doi:10.1175/amsmonographs-d-18-0014.1 fatcat:vo2ewgtwrvhwfgfl3jxdiqyt24

Marine debris survey manual

1993 Marine Pollution Bulletin  
As with net variability, acoustic and mechanical devices are available that detect contact of the footrope with the bottom during the tow.  ...  ., fishing gear, ropes, bottles), or a combination of the two. The major categories have typically been fishing gear, plastic, styrofoam, glass, wood, metal, paper, and miscellaneous.  ... 
doi:10.1016/0025-326x(93)90583-6 fatcat:tacwi6yfwjhfbm2znxyypp2pke

The Multi-Purpose Airborne Sensor Carrier MASC-3 for Wind and Turbulence Measurements in the Atmospheric Boundary Layer

Alexander Rautenberg, Martin Schön, Kjell zum zum Berge, Moritz Mauz, Patrick Manz, Andreas Platis, Bram van van Kesteren, Irene Suomi, Stephan T. Kral, Jens Bange
2019 Sensors  
This study presents the new mark of the Multi-Purpose Airborne Sensor Carrier (MASC-3) for wind and turbulence measurements and describes the subsystems designed to improve the wind measurement, to gain  ...  MASC-3 performs valuable measurements of stable boundary layers with high temporal resolution and supplements the measurements of meteorological towers and sodar systems.  ...  The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.  ... 
doi:10.3390/s19102292 fatcat:kzt7lqhornhztlfwshnwdnbutu

Modern Flour-Mill Machinery

Robert B. Creak
1913 Proceedings of the Institution of Mechanical Engineers  
The line of elevators is seen down the centre with the two plants on either side. No. 1 floor contains the line shafts driving the roller-mills, and the elevator boots.  ...  The modern tendency has been to locate mills on the waterside a t the principal ports and to increase the capacity of the single plant, in each case with a view to economy in cost of production.  ...  This would hardly be permissible with gear-wheel differential.  ... 
doi:10.1243/pime_proc_1913_085_017_02 fatcat:ac6gtih3mjexvequstzd6lkpli
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