Efforts continue to improve the Modeling of Thrusters

Thursday, September 19, 2013
Robert Heerkink is project manager at the Ships department of MARIN, the Maritime Research Institute Netherlands.

MARIN uses thrusters in many projects. For a typical model scale, around 1:50 to 1:60, relatively small thrusters are required. Thrusters for these models are available ranging from 50 mm to 80 mm nozzle diameters.  In the past these thrusters were always modelled with a horizontal shaft.
By tilting the nozzle, the closest possible match was achieved between the client specifications and the modelled thruster for the basin tests.
Due to the ever-evolving process in improving the models, new thrusters were built witha 7-degree tilted thruster shaft.
Special gears were made for a reliable and durable thruster model and with these new thrusters it is still possible to mount nozzles with a slightly different angle. See figures for examples.
The newly built thrusters give clients the ability to choose a more accurate representation of the thrusters used during model testing.

Robert Heerkink is project manager at the Ships department of MARIN, the Maritime Research Institute Netherlands. MARIN offers simulation, model testing, full-scale measurements and training programs, to the shipbuilding and offshore industry and governments.

 

(As published in the September edition of Maritime Reporter & Engineering News - www.marinelink.com)
 

  • 7 deg. tilted axis,  5 deg. tilted nozzle

    7 deg. tilted axis, 5 deg. tilted nozzle

  • Model with mounted thrusters

    Model with mounted thrusters

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter July 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

Horizon Delivers Towboat Marty Cullinan for FMT

In June 2016 Horizon Shipbuilding, Inc. of Bayou La Batre, Ala. delivered the M/V Marty Cullinan, a 120’ towboat with a retractable pilot house, to its home port of New Orleans, La.

Insights: Kunkel Weighs in on Propulsion Technology

LNG? Methanol as fuel? Hybrid systems? Tier 4? Reducing noise? Cutting emissions without crushing fuel economy? Marine News readers have questions and Bob Kunkel has answers.

A Sea Change in Waterjet Technology

Longtime waterjet propulsion equipment provider NAMJet introduces key advancements for the workboat sector. Back in 2011, when boat builder Birdon went looking

Offshore

Swiber Applies for Judicial Management Instead of Liquidation

Singapore oilfield services company Swiber Holdings Ltd said on Friday it has applied to place itself under judicial management instead of liquidation.   Swiber

US Oil Drillers Add Rigs for 5th Week in a Row

U.S. drillers this week added oil rigs for a fifth consecutive week, Baker Hughes Inc said on Friday, but the oilfield services provider and some analysts cast

Det Norske to Restore Production at Alvheim after Leak

Norwegian oil firm Det norske said it expected to reach full production at its Alvheim FPSO (floating storage, offloading and producing unit) overnight after a leak,

Navigation

Protecting Sensitive Sea Areas in South-East Asia

Further progress towards identifying and designating Particularly Sensitive Sea Areas (PSSAs) in south-east Asia has been made during a regional meeting in Lombok, Indonesia (27-28 July).

CMA CGM Rolls out Bengal Bay Express

CMA CGM has introduced its new Bengal Bay Express service, operated with 11 vessels of 6,500 TEU on a weekly basis, in a continuous effort to provide its customers with the best quality service.

The ‘Paperless’ Ship

The cloud is for “device-agnostic young slashers,” said Trond Bjorseth, marketing manager, of Oslo-based cloud consultancy, Tieto. His company offers an information

Marine Power

Horizon Delivers Towboat Marty Cullinan for FMT

In June 2016 Horizon Shipbuilding, Inc. of Bayou La Batre, Ala. delivered the M/V Marty Cullinan, a 120’ towboat with a retractable pilot house, to its home port of New Orleans, La.

Insights: Kunkel Weighs in on Propulsion Technology

LNG? Methanol as fuel? Hybrid systems? Tier 4? Reducing noise? Cutting emissions without crushing fuel economy? Marine News readers have questions and Bob Kunkel has answers.

A Sea Change in Waterjet Technology

Longtime waterjet propulsion equipment provider NAMJet introduces key advancements for the workboat sector. Back in 2011, when boat builder Birdon went looking

Naval Architecture

New 'Mega Passenger Ship' for Star Cruises

Elomatic Ltd and Deltamarin Ltd have signed a tri-party engineering contract with shipbuilder MV Werften for the design of Star Cruises’ new Global Class “mega passenger ship,

A Sea Change in Waterjet Technology

Longtime waterjet propulsion equipment provider NAMJet introduces key advancements for the workboat sector. Back in 2011, when boat builder Birdon went looking

ATB Design Comes of Age

The emerging trend of marrying the design of an articulated tug and barge (ATB) to a particular propulsion system to maximize efficiencies of that system has, of late,

Dynamic Positioning

Global Maritime Introduces New DP Policies & Procedures

Global Maritime Consultancy & Engineering has introduced a new set of policies and procedures to support its Dynamic Positioning (DP) activities. The new procedures

 
 
Maritime Contracts Maritime Security Maritime Standards Naval Architecture Pod Propulsion Port Authority Salvage Ship Repair Ship Simulators Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0841 sec (12 req/sec)