... 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...

..., 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...

... 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...

... 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...

... 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 In recent years...

... vessel maneuvering are modified to incorporate roughness of the hull and rudder. Vessel lifetime roughness profiles are postulated based on construction, coatings, operation and maintenance for a vessel life of 25 years. These are then applied to the turning maneuver for single screw cargo ships...

... 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...

... 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...

... 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...

... 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...

... 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...

... be extracted with this simulation technique. 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...

... 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...

... 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...

... 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...