Results 161 to 170 of about 2,911 (199)

Electric hybridization of a bow thruster for river boat application

2015 IEEE Transportation Electrification Conference and Expo (ITEC), 2015
The paper deals with the electric hybridization of a bow thruster for a river tugboat application. The knowledge gap leads to the full electrical retrofit of a previously high power hydraulic bow thruster system, in the objective of having more electrified subsystems in the boat, leading to an eco-friendly solution.
Jeff Moussodji, Alexandre De Bernardinis
openaire   +1 more source

An experimental and numerical investigation on hydrodynamic characteristics of the bow thruster

Ocean Engineering, 2020
Abstract While maneuvering or positioning in different situations, the hull, the angle of the inlet current, and the tunnel opening fairing onto the hull have serious impacts on the performance of the bow thruster. The co-operation of multiple bow thrusters affects each other in the hydrodynamic performance.
Feng Yukun, Chen Zuogang, Dai Yi, Zhang Zheng, Wang Ping   +4 more
openaire   +1 more source

Noise Reduction of Bow Thrusters

1986
On many types of ships the operation of a bow thruster can be most annoying for the crew. The reason is that a thruster is a very strong acoustical source which induces intermittent noise in the adjoining accommodation spaces. Further, a bow thruster is located in an area of the ship where there generaly are no other major noise sources.
openaire   +1 more source

Thruster-Interaction Effects on a DP Shuttle Tanker - Wake Flow Measurements of the Main Propeller and Bow Tunnel Thrusters

Volume 1B: Offshore Technology, 2014
This paper discusses thruster interaction effects for a DP shuttle tanker, equipped with two main propellers and rudders, as well as two bow tunnel thrusters. Thruster-interaction model tests were carried out in MARIN’s Deepwater Towing Tank. Detailed PIV measurements were taken of the wake flow behind the main propellers and rudders.
J. L. Cozijn, R. Hallmann
openaire   +1 more source

Optimization of Bow Thruster Openings for Improved Hydrodynamic Performance

Volume 6: Polar and Arctic Sciences and Technology; CFD, FSI, and AI
Abstract Bow thrusters are a common feature of ships nowadays and come with the undesired effect of creating relatively large openings at the bow of the ship, increasing the resistance of the hull. The most common solution for mitigating the increase in hull resistance, and at the same time protecting the thruster from ingestion of large
Cosmin Ciortan, Antonio Caizzi
openaire   +1 more source

A 250 kW Three Phase Induction Motor Design for Electric Bow Thruster

2018 International Conference on Electrical Engineering and Computer Science (ICECOS), 2018
Induction motors are used in various applications because it has the simplest construction and design than other motor types. The applications are not only in industrial applications but also in maritime applications. This paper presents a design process for a 250 kW three-phase asynchronous motor with high torque and low rpm for electric bow thruster ...
Asep Andi Suryandi, Cuk Supriyadi Ali Nandar, Dewi Rianti Mandasari, Katri Yulianto   +3 more
openaire   +1 more source

Observations on the Effect of Vessel Speed on Bow Thruster Performance

Marine Technology and SNAME News, 1971
The paper explores the effect of vessel speed on thruster performance by comparing fullscale data to model test data. The steering effect of the thruster alone, and in combination with the rudder, is considered. A limited amount of full-scale data on the steering effect of a bow thruster, with the vessel proceeding astern, is presented.
openaire   +1 more source

The effectiveness of a bow thruster at low and medium ship speeds

International Shipbuilding Progress, 1967
The manoeuvreability of a ship is poor at low speed, but it can be improved considerably by installing a bow thruster. The model tests which KMW have carried out at HyA show that the thrust from the bow thruster jet does not change with speed. However, the pressure distribution on the hull is changed by the jet so that the resulting side force and ...
openaire   +1 more source

Performance of azimuth and bow thrusters during ship maneuvers

Active maneuvering devices improve the maneuverability of a vessel during departure and arrival, reducing the need for tug assistance. However, their operation in significant oblique flow conditions leads to complex flow behaviors, posing challenges in predicting the ship's response within the port environment.
openaire   +1 more source

The Performance of a Tunnel Bow Thruster with Slow Speed Ahead: A Revisited Issue

Journal of Navigation, 2009
This paper studies the effectiveness of a ship's tunnel bow thruster with slow speed ahead. After describing the general reasons for the decrease of performance with slow speed ahead, the Anti Suction Tunnel (AST) is analyzed as an advisable state-of-the art design option that aims to improve performance.
openaire   +1 more source