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Keywords: rudder
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Proceedings Papers

Paper presented at the SNAME Maritime Convention, September 27–29, 2022
Paper Number: SNAME-SMC-2022-085
... acquisition system (DAQ) design and testing, as well as environmental monitoring methods. monitoring elevation rudder data acquisition houston journal holthuijsen 2010 artificial intelligence environment smc 2022 hull accuracy frequency high-speed craft model design spectrum battery...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 27–29, 2021
Paper Number: SNAME-SMC-2021-098
..., asymmetrical mass distribution on low deadrise hulls affects heel and induces yaw moments that turn the vessel without the use of traditional aft steering mechanisms. On high deadrise hulls, maneuvering by use of a combined rudder and asymmetrical mass results in ~10% drag savings and improved stability...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-004
... The effects of hull roughness on ship maneuvering characteristics are investigated. The hydrodynamic derivatives in the equations of motion for surface vessel maneuvering are modified to incorporate roughness of the hull and rudder. Vessel lifetime roughness profiles are postulated based...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-034
... of the hull, propeller, and rudder. The time-scale disparity becomes extreme when the rotation of the propeller is resolved in a time-accurate manner, requiring small time-step increments relative to the seakeeping and, in particular, the maneuvering time scales. Our novel approach to the maneuvering-in-waves...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-054
... formulation is used, which has been found to be numerically stable, robust and computationally efficient. These are all critical aspects when performing long time maneuvering simulations. The hull maneuvering, rudder and propeller forces are carefully modelled from a systems-based approach, typically used...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-069
... Hull and strake geometries on a craft typically influence effective rudder angle during turning maneuvers. In this paper, we propose a simple yet accurate model for effective rudder angle that can be used in lumped-parameter maneuvering simulations. The model defines the effective angle...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-093
.... modeling & simulation rudder coefficient fredyn wave drift force october 2019 tacoma wa marine transportation wave elevation quadvlieg manwav prediction autopilot maneuvering artificial intelligence model test ship sname maritime convention smc Quadvlieg & Rapuc A pragmatic way...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 22–24, 2014
Paper Number: SNAME-SMC-2014-P28
... The free vibration of a rudder is studied here by theoretical, numerical, and experimental means. The rudder is modeled as a Kirchhoff’s plate, with chord-wise sections as symmetrical aerofoils of NACA0018 section. The free vibration is also studied numerically. The results have been compared...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 22–24, 2014
Paper Number: SNAME-SMC-2014-T22
... This paper presents the results and analyses of a combined numerical-experimental study into the performance of three types of rudder to quantify the interactions between propeller, nozzle and rudder at extreme rudder angles. Conventional, flapped and triple rudders are studied numerically...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 22–24, 2014
Paper Number: SNAME-SMC-2014-T28
... rudder, propeller and stern ramp, which was extensively documented by commercial divers and a Remotely Operated Vehicle. U.S. Navy divers recovered the vessel’s rudder, GPS units and computer. The evidence obtained from the sunken vessel was systematically evaluated in conjunction with other information...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 17–18, 2008
Paper Number: SNAME-SMC-2008-077
... to thrust allocation are treated. A generalized algorithm is developed. allocation solution rudder thrust level allocation algorithm optimization problem thruster vector requirement artificial intelligence constraint thrust vector inequality allocation problem formulation thrust limit...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 17–18, 2008
Paper Number: SNAME-SMC-2008-050
... air transportation side force modeling & simulation safety board us government ship passenger transportation marine transportation sideslip variation heel angle body axis turn rate equation rudder load factor local time extraction sideslip angle crown princess heeling...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 19–21, 2005
Paper Number: SNAME-SMC-2005-D17
... Rudder manufacturing tolerances can have an effect on rudder lift, drag, torque, cavitation, and surface erosion. An unstructured, incompressible Reynolds-averaged Navier-Stokes Computational Fluid Dynamics code, U2NCLE, is used in this study to evaluate the effects of manufacturing variations...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 19–21, 2005
Paper Number: SNAME-SMC-2005-D05
... to describe the tankers, and to highlight the ability of the tankers to maneuver under single failure (rudder or propeller), and multiple failure (rudder and propeller) conditions. Data will also be provided as to the likelihood of a failure instance. electrical industrial apparatus marine...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 19–21, 2005
Paper Number: SNAME-SMC-2005-D42
... liquefied natural gas lng vessel freight & logistics services gas monetization ship modeling & simulation midstream oil & gas propeller diameter lng twin skeg concept resistance route analysis screw concept single screw ship efficiency conventional rudder cargo capacity lng...

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