发布求助
文献互助 智能选刊 最新文献

Day 2 Wed, September 12, 2012最新文献

筛选
英文 中文
Open Water Performance of a Feathering Propeller 桨叶螺旋桨的开放水域性能
Day 2 Wed, September 12, 2012 Pub Date : 2012-09-11 DOI: 10.5957/pss-2012-009
Steven Guglielmoni, J. Hadler
{"title":"Open Water Performance of a Feathering Propeller","authors":"Steven Guglielmoni, J. Hadler","doi":"10.5957/pss-2012-009","DOIUrl":"https://doi.org/10.5957/pss-2012-009","url":null,"abstract":"In recent years, a number of propeller designs have been developed that aim to reduce the resistive characteristics of sailboat propellers when not in use. One of the more common of these designs is the feathering-blade propeller. Feathering propellers accomplish this decrease in resistance by rotating each blade to a pitch of 90 degrees, parallel to the flow of water over the blade. While the changes in blade geometry as a result of this design affect underway performance, there has been extremely limited empirical testing with regard to the power performance characteristics of these propellers. For this paper, performance comparisons were carried out between a two-blade, 12-inch diameter feathering propeller and standard Wageningen B-Series propeller data in an effort to quantify the difference in propulsive efficiency. These tests included a series of open-water propeller tests conducted in Webb Institute’s Robinson Taylor Model Basin and a series of ship standardization trials conducted aboard a Tripp 30 Sail Boat for a number of pitch-to-diameter ratios.","PeriodicalId":120899,"journal":{"name":"Day 2 Wed, September 12, 2012","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115303001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Practical Considerations for Optimization of Propulsion Efficiency in Commercial Vessels 商船推进效率优化的实际考虑
Day 2 Wed, September 12, 2012 Pub Date : 2012-09-11 DOI: 10.5957/pss-2012-007
Cliff Burns, Mike Wiegand
{"title":"Practical Considerations for Optimization of Propulsion Efficiency in Commercial Vessels","authors":"Cliff Burns, Mike Wiegand","doi":"10.5957/pss-2012-007","DOIUrl":"https://doi.org/10.5957/pss-2012-007","url":null,"abstract":"In this paper the focus is not regarding any one particular type of vessel, but is to call attention to the various vessel and propulsor features which affect the propulsive efficiency of most any vessel. There is also some consideration of the various propulsor types and their effectiveness and appropriateness in the various vessel missions. The main focus, because most of the authors’ experience has been in design and manufacture of commercial marine propellers and nozzles, will be on propeller driven vessels. The paper will address, somewhat, various vessel design features and specific details which have an effect on efficient use of the power available. The author’s point of reference comes from decades of working to suggest, design, and provide efficient propellers for particular use in both new and existing vessels. Over the years, it seems common that in any field we learn the most from the most challenging vessel propulsion problems. It seems appropriate to share some of the experience and learning from the author’s work to improve propulsion efficiency and smoothness of operation in commercial vessels.","PeriodicalId":120899,"journal":{"name":"Day 2 Wed, September 12, 2012","volume":"230 1‐4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120840295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Propeller hydrodynamic loads in relation to propulsion shaft alignment and vibration calculations 螺旋桨水动力载荷与推进轴对中及振动计算的关系
Day 2 Wed, September 12, 2012 Pub Date : 2012-09-11 DOI: 10.5957/pss-2012-010
Yuriy A. Batrak, Valentyn P. Shestopal, Roman Y. Batrak
{"title":"Propeller hydrodynamic loads in relation to propulsion shaft alignment and vibration calculations","authors":"Yuriy A. Batrak, Valentyn P. Shestopal, Roman Y. Batrak","doi":"10.5957/pss-2012-010","DOIUrl":"https://doi.org/10.5957/pss-2012-010","url":null,"abstract":"In spite of recent CFD progress, simple methods for the estimation of the propeller hydrodynamic loads through stationary non-uniform wake in relation to cargo ship shafting alignment and vibration calculations are still demanded. The paper concerns with the propeller load calculation results obtained on the base of widely used approaches implemented by the authors in propulsion shaft calculation software. Practical recommendations for setting of propeller hydrodynamic loads in the case of lack of data for full calculation are proposed. The procedure for the propeller load validation in relation to the shaft alignment criteria is discussed.","PeriodicalId":120899,"journal":{"name":"Day 2 Wed, September 12, 2012","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128459703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Full Scale Dynamic Propulsion Shaft Alignment Investigation 全尺寸动力推进轴对中研究
Day 2 Wed, September 12, 2012 Pub Date : 2012-09-11 DOI: 10.5957/pss-2012-001
Arie D. Leeuwenburg, B. Hooghart
{"title":"Full Scale Dynamic Propulsion Shaft Alignment Investigation","authors":"Arie D. Leeuwenburg, B. Hooghart","doi":"10.5957/pss-2012-001","DOIUrl":"https://doi.org/10.5957/pss-2012-001","url":null,"abstract":"SKF Marine ISC was requested by STX Finland Oy, location Rauma to perform full scale dynamic propulsion shaft measurements on board of the RoPax vessel “Pride of France” in order to solve high shaft support bearing operational temperatures.\u0000 After modeling the propulsion line with a state-of-the-art CAE software for shaft alignment and vibration calculations and recording of the actual static bearing load and actual static bending stress of the accessible shaft line, during a sea trial, several dynamic measurements like dynamic bending stress, shaft torque and speed, shaft orbit, bearing temperature, vibration and longitudinal shaft movement were measured and recorded.\u0000 After analysis of the measured and recorded data, following conclusions could be made; Large longitudinal shafts movements were present in operational condition. Measured shaft support bearing temperatures have a linear relationship with measured and calculated bearing load in operational condition, so temperature readings can be used as a condition monitoring tool to calculate bearing load in different operational conditions.","PeriodicalId":120899,"journal":{"name":"Day 2 Wed, September 12, 2012","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128317602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信