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Keywords: ship
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Proceedings Papers

Paper presented at the SNAME Propeller and Shafting Symposium, September 12–13, 2023
Paper Number: SNAME-PSS-2023-010
... influential due to supra-regional laws.The primary structure-borne sound path is transmitted from the engine over the engine mounts into the ship's hull. This obvious path is currently already well attenuated and for the most part does not present noise vibration problems. Therefore, the secondary path from...
Proceedings Papers

Paper presented at the SNAME Propeller and Shafting Symposium, September 12–13, 2023
Paper Number: SNAME-PSS-2023-012
... In the design process of a new vessel, ship speed-power predictions provide designers valuable insight regarding the expected performance of the vessel with respect to the contractual speed requirements. In this study, two different methods for acquiring this speed-power prediction, being model...
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-2018-06
...Shock-Qualified Stern Tube Seal with Improved Capabilities and Reduced Total Ownership Cost Authors: C. Ludlow (V), S. Klepper (V), M. Spadafora (V) Stern tube seals are a critical component in a ships propulsion system, sealing the shafts penetration through the hull. Stern tube seals can result...
Proceedings Papers

Paper presented at the SNAME 14th Propeller and Shafting Symposium, September 15–16, 2015
Paper Number: SNAME-PSS-2015-003
... flowline corrosion oilfield chemistry passenger transportation production chemistry corrosion inhibition materials and corrosion riser corrosion marine transportation ship upstream oil & gas well integrity bearing system thickness corrosion management shaft bearing bearing...
Proceedings Papers

Paper presented at the SNAME 14th Propeller and Shafting Symposium, September 15–16, 2015
Paper Number: SNAME-PSS-2015-012
... Stern tube lubricants; used to lubricate the bearings that support the vessel propeller shaft in the stern tube, are continuously lost to the marine environment while the ship is moving under power. Although the specific amount of lubricant lost in a stern tube application is dependent...
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 10th Propeller and Shafting Symposium, September 17–18, 2003
Paper Number: SNAME-PSS-2003-17
...U.S. Navy Waterborne Bearing Problems AUTHOR: Frederick Vath Naval Surface Warfare Center, Carderock Division- Ship Systems Engineering Station Phone: (215) 897-8506 Fax: (215) 897-7319 E-mail: [email protected] ABSTRACT: The U.S. Navy currently uses a rubber stave and bearing shell...
Proceedings Papers

Paper presented at the SNAME 10th Propeller and Shafting Symposium, September 17–18, 2003
Paper Number: SNAME-PSS-2003-09
...-distance cruising ferries are introduced. marine transportation shaft sleeve diameter test condition ship rubber bearing characteristic test equipment clearance lubricated bearing bearing pressure ptfe bearing ptfe compound bearing shaft diameter lubricated system water lubricated...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-06
... Because existing ships cover a range of stern bearing designs, the paper starts with a brief history of the development of stern bearings and an evaluation of existing designs. It then discusses the relative energy losses in different types of bearings and some interesting experiences. Next...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-04
... carrier oil lubricated bearing thickness tube bearing stern tube bearing bearing ship recess pressure shaft hydrostatic bearing marine transportation freshwater lubricated hydrostatic stern tube coefficient aft bearing strut bearing design 1 strut bearing Freshwater Lubricated...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-08
... Submarine fleet and was used to validate the seal design prior to the submarine being brought into service. ship liner bearing material rubber stave wear rate shaft bearing rope guard shaft bearing configuration resin clearance gunmetal type 23 configuration marine transportation...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-01
... In modern ship design problems related to cavitation can be solved successfully by properly designing the surfaces of propeller blades, rudders, shaft struts, etc. When the cavitation is of a limited nature, optimization of the geometry with respect to the inception of cavitation can lead...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-19
... The U.S. Coast Guard has traditionally used the methodology and criteria in MIL-STD-167-2A and its predecessors for acceptance testing of new ship propulsion systems. The original standard was written in 1954, with geared turbine drives in mind. It has been changed somewhat over the years...
Proceedings Papers

Paper presented at the SNAME 8th Propeller and Shafting Symposium, September 23–24, 1997
Paper Number: SNAME-PSS-1997-12
...U.S. Navy Ship-Model Powering Correlation and Propeller RPM Prediction Gabor Karafiath, Member, Carderock Division, Naval Surface Warfare Center ABSTRACT The US. Navy is in the process ofreexamining the ship model powering correlation policy to reflect the ship-model correlation allowance...
Proceedings Papers

Paper presented at the SNAME 8th Propeller and Shafting Symposium, September 23–24, 1997
Paper Number: SNAME-PSS-1997-10
... bearing load probability ship deviation brg hull deflection shaft alignment reservoir simulation shaft bearing deflection bearing alignment solution optimized solution influence number Optimization and Stochastic Modeling Applied to Propulsion Shafting Alignment Steven Eugene Owen...
Proceedings Papers

Paper presented at the SNAME 8th Propeller and Shafting Symposium, September 23–24, 1997
Paper Number: SNAME-PSS-1997-19
...Hull and Shaft Wake Interaction S. Cordier (Assoc. Member), F. Legrand (Visitor), J.C. Pinard (Visitor) ABSTRACT The presence of appendages upstream of a propeller on a ship modifies its hydrodynamic performances: rotation speed, power, efficiency, cavitation and noise. Hence, it is ·necessary...
Proceedings Papers

Paper presented at the SNAME 7th Propeller and Shafting Symposium, September 20–21, 1994
Paper Number: SNAME-PSS-1994-009
... distribution ship efficiency characteristic pl system sustainability cavitation tunnel propeller reynolds number tank stator-propeller system open-water characteristic pitch angle THE SOCIETY OF NAVAL ARCHITECTS AND MARINE ENGINEERS 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 Paper to be prasenled...
Proceedings Papers

Paper presented at the SNAME 7th Propeller and Shafting Symposium, September 20–21, 1994
Paper Number: SNAME-PSS-1994-014
... of blade; viscosity effect corrections. ship formula quadrature correction circulation distribution mishkevich propeller efficiency viscosity requirement singular integral artificial intelligence accuracy efficiency procedure marine propeller thickness calculation coefficient...
Proceedings Papers

Paper presented at the SNAME 7th Propeller and Shafting Symposium, September 20–21, 1994
Paper Number: SNAME-PSS-1994-005
... This paper is presented as a precursor of a SNAME, M20 Ship Machinery Vibration Guideline for predicting the lateral shaft vibration amplitudes and forces on single and multiple screw ships. Comments from the attendees of the Symposium are sought to take this as useful as possible...

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