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Multi-Jackbolt Tensioner Type Expansion Bolts for Marine Applications 船用多千斤顶张紧式膨胀螺栓
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-14
Stephen J. Busalacchi
{"title":"Multi-Jackbolt Tensioner Type Expansion Bolts for Marine Applications","authors":"Stephen J. Busalacchi","doi":"10.5957/pss-2009-14","DOIUrl":"https://doi.org/10.5957/pss-2009-14","url":null,"abstract":"This paper introduces and discusses the multi-jackbolt tensioner (MJT) type expansion bolt with split expanding sleeve as a replacement to standard fitted or interference fit bolts that are widely used within industry, including navy and marine environments. For marine uses, applications include shaft and propulsion coupling bolting as well as on anchoring and positioning bolting often required for most line shaft bearings, thrust bearings, and steering gears. Both a Finite Element Method (FEM) study and a shear test were recently performed to confirm superior load carrying ability as compared to standard fitted bolts. Further, results of these tests, installation / removal time comparisons, and calculated costs savings are presented here for consideration.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114902838","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
High-end Software for Propulsion Shaft Calculation 推进轴计算高端软件
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-11
Yuriy A. Batrak, Martin van Leest
{"title":"High-end Software for Propulsion Shaft Calculation","authors":"Yuriy A. Batrak, Martin van Leest","doi":"10.5957/pss-2009-11","DOIUrl":"https://doi.org/10.5957/pss-2009-11","url":null,"abstract":"There are three main problems for engineers specializing in propulsion train calculation. The first problem is a lack of a single shaft model to perform all types of shaft related calculations, the second is the inability to analyze different operation states of propulsion shafting in one click, the third is a substantial disparity between modern knowledge in propulsion train domain and capabilities of software in use. The above-stated reasons provided a starting point for the development of the presented Computer Aided Engineering (CAE) system.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130445302","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
An Environmentally Preferable Lubricant for Tunnel and Azimuth Thrusters 隧道和方位推进器的环保润滑剂
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-16
H. Sada, D. Hawkins, Paul Erikson, Yancey Wisenbaker
{"title":"An Environmentally Preferable Lubricant for Tunnel and Azimuth Thrusters","authors":"H. Sada, D. Hawkins, Paul Erikson, Yancey Wisenbaker","doi":"10.5957/pss-2009-16","DOIUrl":"https://doi.org/10.5957/pss-2009-16","url":null,"abstract":"Ocean-going vessels use oil lubrication in the tunnel thrusters. Offshore vessels also use oil lubrication in the azimuth thrusters. Oil leakage from the thrusters is a serious environmental issue in these vessels. In this paper, a water-soluble, environmentally preferable lubricant newly developed for such thrusters is outlined. Properties required for a thruster lubricant and a suitable base fluid are discussed. Environmental compatibility (biodegradability, low toxicity and no sheen or sludge formation), viscosity, lubricity, oxidation stability, rust prevention and seal compatibility of the new lubricant are described. These properties show that for tunnel and azimuth thrusters the new lubricant can improve not only their environmental compatibility but also their seawater tolerance. Field experience of the thruster lubricant is also presented.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115068924","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
A Method for the Prediction of Rotor/Stator Interaction Applications to 2-D Hydrofoils and Propeller 一种用于二维水翼和螺旋桨的转子/定子相互作用预测方法
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-07
Lei He, S. Kinnas
{"title":"A Method for the Prediction of Rotor/Stator Interaction Applications to 2-D Hydrofoils and Propeller","authors":"Lei He, S. Kinnas","doi":"10.5957/pss-2009-07","DOIUrl":"https://doi.org/10.5957/pss-2009-07","url":null,"abstract":"This paper presents computational techniques to predict the fully unsteady interaction of two hydrofoils (rotor and stator) and to calculate the unsteady trailing wake geometry in the case of a propeller. A boundary element method is developed to simulate the unsteady performance of moving and stationary hydrofoils interaction in 2-D. The wakes of the two hydrofoils are determined in time by applying a force-free condition on each wake surface. The results of the present method are compared with those from viscous flow calculations in 2-D, by using a commercial RANS solver (FLUENT) on the same 2-D hydrofoil set-up and conditions. The effect of the unsteady rotor/stator interaction is studied. The method then is extended in 3-D to calculate the unsteady trailing wake of propeller flow, and validated with experimental data.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127085413","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
Alternative Three-Dimensional Measurement Systems 可选的三维测量系统
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-15
R. Teichman
{"title":"Alternative Three-Dimensional Measurement Systems","authors":"R. Teichman","doi":"10.5957/pss-2009-15","DOIUrl":"https://doi.org/10.5957/pss-2009-15","url":null,"abstract":"NAVSEA is currently looking at alternative three-dimensional measurement systems for submarine and aircraft carrier main propulsion shaft and inboard coupling taper inspections. The current system, which consists of ring and plug gages, is unwieldy and is expensive in terms of manpower, time, procurement, and refurbishment costs. NAVSEA has tested two systems so far, a laser system and a photogrammetry system. Based on the evaluation of the data thus far, the laser system is incapable of capturing small surface irregularities as the gages of the current system. The photogrammetry system is still being evaluated.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134474381","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
Experience with carbon fiber tubes in ship propulsion 有在船舶推进系统中使用碳纤维管的经验
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-10
G. Kirschey
{"title":"Experience with carbon fiber tubes in ship propulsion","authors":"G. Kirschey","doi":"10.5957/pss-2009-10","DOIUrl":"https://doi.org/10.5957/pss-2009-10","url":null,"abstract":"Carbon Fiber Tubes have been used as propulsion shafts for about 20 years and they are finding more and more acceptance. The theory about the design and specification of such tubes has been known for a long time. It has partly been described in the SNAME paper, Propellers/Shafting 97 Symposium in chapter 4 from the same author.\u0000 This time the broad experience and design philosophy of such complete shaft lines shall be described and explained by using various samples of several successful applications.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134563649","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
A Discussion of Pod Drives and Their Application In the Pleasure Boat Market 论吊舱驱动及其在游艇市场上的应用
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-17
Christopher Swanhart
{"title":"A Discussion of Pod Drives and Their Application In the Pleasure Boat Market","authors":"Christopher Swanhart","doi":"10.5957/pss-2009-17","DOIUrl":"https://doi.org/10.5957/pss-2009-17","url":null,"abstract":"Since being introduced to North America at the Miami Boat Show in 2005, Volvo Penta Inboard Performance System, or IPS has established itself as a leading propulsion choice among pleasure boat owners and builders. Other suppliers are following suit including the Cummins Mercruiser Zeus system. Pod propulsion offers benefits like increased efficiency, better performance, nimble handling, and low noise levels while allowing more people to successfully operate their vessel due to a friendly operator interface. Features of these commercial pod systems that also benefit builders include ease of installation and the integral underwater exhaust which helps to meet CE requirements, for both exhaust and noise levels.\u0000 Both IPS and Zeus are fully integrated pod propulsion systems. Existing vessels can be retro-fitted with these systems while many new vessels are being designed specifically for IPS or Zeus. Donald L. Blount and Associates provides consulting in regards to IPS integration with existing and new designs and has also been involved with designs employing the Zeus system.\u0000 The first portion of this paper discusses pod drives, particularly IPS itself. (Because the author has substantially more experience and background with IPS, much of the information herein is IPS specific). General information on IPS and Zeus is offered as well as some operational specifics. The paper then focuses on the application of pod drives in existing and new vessel designs. The discussion includes how hull forms can be evaluated for use with pod drives. A look at the integration of pod systems into various types of pleasure boats (cruiser, day boat, fishing yacht, etc) is also covered including the challenges which exist for each specific vessel type.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114613920","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
Effect of Waterjet Propulsion on Sway and Yaw Static Maneuvering Coefficients 水射流推进对横摆和偏航静机动系数的影响
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-08
M. Wilson
{"title":"Effect of Waterjet Propulsion on Sway and Yaw Static Maneuvering Coefficients","authors":"M. Wilson","doi":"10.5957/pss-2009-08","DOIUrl":"https://doi.org/10.5957/pss-2009-08","url":null,"abstract":"Results are presented from captive model tests on the effect of waterjet propulsion flows on the static maneuvering coefficients for sway force and yaw moment for a model of a large waterjet-propelled sealift ship configuration. Towing basin tests were conducted for the measurement of hull surge force and side forces at static (fixed) hull yaw angles of 0, 1, and 3 degrees at four ship speeds, ranging from 20 to 36 knots. Side force and yaw moment data were analyzed in terms of the standard linear sway force and yaw moment derivative coefficients Y'v and N'v. These play a role in ship controls-fixed maneuvering factors. It is shown that the maneuvering factors for the waterjet-propelled case differ by as much as 20% and 25% from the bare hull values for the sway- and yaw- derivative coefficients, respectively.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128516298","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
Impact of new class rules on design and construction of bolted shaftconnections 新等级规则对螺栓连接设计和施工的影响
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-13
Stefan Norberg, Staffan Sundberg
{"title":"Impact of new class rules on design and construction of bolted shaft\u0000connections","authors":"Stefan Norberg, Staffan Sundberg","doi":"10.5957/pss-2009-13","DOIUrl":"https://doi.org/10.5957/pss-2009-13","url":null,"abstract":"Recently several classification societies have redefined and made more stringent their requirements for coupling bolts. Different bolting methods and their requirements have been further defined. This includes fitted bolts, non-fitted bolts and combinations thereof. For fitted bolts, the term fitted has now been defined as “The accuracy of fit is to be zero or negative clearance” or similar, requiring a verified zero to interference fit. The theoretical requirements and submittals for non-fitted bolt have been further defined as well. These new requirements will result in either larger connections or require coupling bolts that can achieve the required interference fit in a verifiable way. Traditionally, fitted bolts that require an interference fit have been installed after being cooled down with CO2 or liquid nitrogen. There are concerns about this practice due to the rapid temperature change and its effect on the bolt material. There is also the problem of how to remove a bolt fitted with an interference fit without damaging flange holes and bolts, especially after being in operation for some time. Fortunately there are established and new solutions to these updated requirements such as expandable bolts that both create the required fit and are easily removed .The alternatives also include solutions where the flanges are removed and removable couplings are used.\u0000 The paper will discuss the design, maintenance and operational aspects of these rules and the different solutions.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124806854","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
Performance of Stern Tube Bearings under Different Lubrication andOperating Conditions 不同润滑和工况下尾轴管轴承的性能
Day 2 Wed, September 16, 2009 Pub Date : 2009-09-15 DOI: 10.5957/pss-2009-12
J. H. Andersen, H. Sada, S. Yamajo
{"title":"Performance of Stern Tube Bearings under Different Lubrication and\u0000Operating Conditions","authors":"J. H. Andersen, H. Sada, S. Yamajo","doi":"10.5957/pss-2009-12","DOIUrl":"https://doi.org/10.5957/pss-2009-12","url":null,"abstract":"This paper presents the results of an investigation into the theoretical and experimental performance of oil lubricated journal bearings. DNV has developed a new calculation tool for the analysis of journal bearing performance as part of shaft alignment analysis. The results of the calculation tool have been compared to other research and analysis methods under static and dynamic conditions. In addition, white metal bearings were tested with decreasing Sommerfeld number until loss of hydrodynamic lubrication. The experiments were carried out in a bearing test rig and with three different lubricants, normal mineral oil, emulsifying oil, and water-soluble oil. The tests were done with increasing water content in the lubricant. Results from the test were compared with calculation using the DNV analysis tool.","PeriodicalId":108275,"journal":{"name":"Day 2 Wed, September 16, 2009","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132225760","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
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