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Keywords: diameter
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Proceedings Papers

Paper presented at the SNAME Propeller and Shafting Symposium, September 12–13, 2023
Paper Number: SNAME-PSS-2023-005
... When considering the propulsion performance of a ship, one of the most important factors is the propeller design. Generally, it has been known that propulsion efficiency is greater if a propeller has a larger diameter and low propeller shaft speed. However, it is equally important to maintain...
Proceedings Papers

Paper presented at the SNAME 15th Propeller and Shafting Symposium, September 25–26, 2018
Paper Number: SNAME-PSS-2018-09
... there is no standardized nominal stress assessment. Theoretical evaluations are confirmed by prototype testing. This integrated designing procedure allows for an efficient planning and engineering for special beveloid gears. Several examples of application will be shown. transverse section diameter shaft...
Proceedings Papers

Paper presented at the SNAME 15th Propeller and Shafting Symposium, September 25–26, 2018
Paper Number: SNAME-PSS-2018-11
... In the preliminary design of a propulsion unit the selection of propeller diameter is most commonly based on open water tests of systematic propeller series. The optimum diameter obtained from the propeller series data is however not considered to be representative for the operating conditions...
Proceedings Papers

Paper presented at the SNAME 14th Propeller and Shafting Symposium, September 15–16, 2015
Paper Number: SNAME-PSS-2015-009
... process shaft sleeve sleeve fit area navsea thickness diameter shaft replacement welding process end detail us government refurbishment operation welding water intrusion machining Maintenance of Propulsion Shaft Split Sleeves Tina Burke Roy McCausey David Norris Michael Scibelli, P.E...
Proceedings Papers

Paper presented at the SNAME 14th Propeller and Shafting Symposium, September 15–16, 2015
Paper Number: SNAME-PSS-2015-011
... tool for propeller geometries. foundry distortion mold propeller thickness contraction geometry dimensional consistency residual stress design geometry diameter casting solidification shrinkage solid shrinkage metals & mining patternmaker tolerance correction pattern...
Proceedings Papers

Paper presented at the SNAME 13th Propeller and Shafting Symposium, September 11–12, 2012
Paper Number: SNAME-PSS-2012-007
... propeller thrust marine transportation efficiency available power loading rpm boat thickness rudder consideration blade area nozzle open propeller modification diameter manufacturer blade tip Practical Considerations for Optimization of Propulsion Efficiency in Commercial Vessels Cliff...
Proceedings Papers

Paper presented at the SNAME 12th Propeller and Shafting Symposium, September 15–16, 2009
Paper Number: SNAME-PSS-2009-13
... diameter requirement liquid nitrogen fitted bolt clearance classification society coupling time consuming fitted length new class rule preload coupling bolt flange hole friction torque interference fit construction Impact of new class rules on design and construction of bolted shaft...
Proceedings Papers

Paper presented at the SNAME 12th Propeller and Shafting Symposium, September 15–16, 2009
Paper Number: SNAME-PSS-2009-04
... with notable reduction of radiated noise - all without loss of capacity or efficiency. thruster diameter noise propeller ship operation forward-skew-bladed ducted propeller cavitation noise roger revelle application agor-24 impeller upstream oil & gas environmental parameter crp...
Proceedings Papers

Paper presented at the SNAME 12th Propeller and Shafting Symposium, September 15–16, 2009
Paper Number: SNAME-PSS-2009-16
... 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. thruster normal load diameter ep...
Proceedings Papers

Paper presented at the SNAME 12th Propeller and Shafting Symposium, September 15–16, 2009
Paper Number: SNAME-PSS-2009-14
... as compared to standard fitted bolts. Further, results of these tests, installation / removal time comparisons, and calculated costs savings are presented here for consideration. upstream oil & gas torque busalacchi bearing diameter contact plane mjt expansion bolt type expansion bolt...
Proceedings Papers

Paper presented at the SNAME 11th Propeller and Shafting Symposium, September 12–13, 2006
Paper Number: SNAME-PSS-2006-19
... in China. completion installation and operations thickness elastomeric bearing propeller shaft whitemetal bearing nominal pressure 0 pressure 0 shaft liner white metal bearing water lubricated bearing metal bearing diameter shaft bearing marine transportation liner shaft diameter...
Proceedings Papers

Paper presented at the SNAME 11th Propeller and Shafting Symposium, September 12–13, 2006
Paper Number: SNAME-PSS-2006-20
... required for a sterntube lubricant and a suitable base fluid are discussed Environmental properties, viscosity, corrosion prevention, water contamination lubrication and seal compatibility of the new lubricant are described. lubricant diameter biodegradation environmentally compatible lubricant...
Proceedings Papers

Paper presented at the SNAME 10th Propeller and Shafting Symposium, September 17–18, 2003
Paper Number: SNAME-PSS-2003-13
... blade section shape for equal performance in both directions. Using the derived sections the complete thruster was optimised for a given operating condition. NOMENCLATURE ~ JCp Pressure coefficient= 1-( p Q T V D Diameter V J Advance ratio= - nD T KT Thrust coefficient = pn2D4 Q ~ Torque coefficient...
Proceedings Papers

Paper presented at the SNAME 10th Propeller and Shafting Symposium, September 17–18, 2003
Paper Number: SNAME-PSS-2003-18
... where the jet narrows to its minimum diameter (vena contracta). Station Ia is taken as the upstream control position, located at one inlet diameter ahead of the roof tangency point (ITTC (2002 BASELINE HULL AND WATERJET PROPULSION SYSTEM Baseline Hull The U.S. Navy small ship FJV ATHENA was chosen...
Proceedings Papers

Paper presented at the SNAME 10th Propeller and Shafting Symposium, September 17–18, 2003
Paper Number: SNAME-PSS-2003-09
... a shaft diameter of 300mm is the limit from a total cost viewpoint, including the initial and running costs. A water lubricated system costs less to ships in which the shaft diameter is less than 300mm while an oil lubricated system costs less to the vessel with a shaft diameter of more than 300mm. From...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-02
...-carrying staves in place in the new bearings, resulting in simplified (lower cost) housings. us government thickness diameter operation stave elastomer radial load bearing design super demountable bearing axial length demountable bearing lubrication weight loss application bearing...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-06
... viscosity deflection shaft bearing hollow shaft stem bearing unit length leakage stiffness marine transportation clearance diameter coefficient propeller vibration upstream oil & gas ship lubricated bearing consideration solid shaft equation STERN BEARINGS, BACKGROUND...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-08
... and water-lubricated 'A' bracket bearing performance. On behalf of the UK MoD we operate four full scale Test Rigs, including 200mm and 514mm shaft diameter rigs for the assessment of bearing materials. The 5I4mm rig [Plate I] is designated the 'Frigate Rig'. Plate 1 - Frigate Bearing Test Rig BMT also...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-13
... the requirement. The design was completed using lifting line, lifting surface, and panel codes. The design propeller incorporates tip unloading, large diameter, thick blades, and long chord lengths to achieve the required performance. Open water and powering tests were performed at the David Taylor Model Basin...
Proceedings Papers

Paper presented at the SNAME 8th Propeller and Shafting Symposium, September 23–24, 1997
Paper Number: SNAME-PSS-1997-14
... in industry, as well as a new performance model that can be used in propeller calculations. curvature propeller manufacturer dawson propeller deformation small propeller cup effective pitch diameter cavitation geometric pitch proposed geometry standard cupped propeller macpherson...

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