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 Reporter August 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

MN 100: Twin Disc, Inc.

1328 Racine Street Racine, WI 53403 Telephone: 262 638 4000 Web: www.twindisc.com President and CEO: John H. Batten Number of employees: 990 The Company: Twin Disc designs,

China Orders More MAN Dual-Fuel Units

51/60DF engines to power LNGCs MAN Diesel & Turbo has announced a further order for its MAN 51/60DF engine. After a longer period of evaluation, an international consortium,

TORM Contracts Albwardy for Diving Services

Danish product tanker carrier TORM A/S and UAE-based Albwardy Marine Engineering (AME), an Albwardy-Damen JV, have signed a Service Level Agreement for diving services in the UAE region.

Offshore

Technip Further Optimizes its Subsea Assets

Technip signed today an agreement to sell 100% of its North American diving assets to Ranger Offshore Inc.(1). Technip’s strategy focuses on high technology

InterMoor UK Completes 2,300 Accident-free Projects

InterMoor UK Operations, part of Acteon’s foundations and moorings business, says it has completed seven years and more than 2,300 projects without a single lost-time incident (LTI).

Navy Ocean Services Contracts Awarded to Five Firms

The US Department of Defense inform that five firms are to share in a broad range of ocean engineering services contracts with a combined maximum dollar value of US$99-million.

Navigation

Majority of Global Tanker Fleet Yet to Adopt ECDIS

UKHO calls on tanker owners and operators to ensure compliance with SOLAS rules on ECDIS carriage from July 1, 2015 The majority of ships in the global tanker fleet have yet to adopt ECDIS,

Haze and Reduced Visibility at Singapore Ports

Due to the presence of haze, the Maritime & Port Authority of Singapore Port Marine in their Notice No.113 of 2014 dated 15 September 2014 have informed the

L-3 MSI to Equip Third Quantum Class Ship

L-3 Marine Systems International (L-3 MSI) announced today that it has been awarded a contract to provide a range of navigation, lighting and communication systems

Marine Power

The Switch to Deliver Full-Power Converter for Floating Power Plant

Vancouver-based Water Wall Turbine Inc. (WWT) has selected The Switch to provide a 500 kW full-power converter for its self-floating power plant. This new system

MN 100: Twin Disc, Inc.

1328 Racine Street Racine, WI 53403 Telephone: 262 638 4000 Web: www.twindisc.com President and CEO: John H. Batten Number of employees: 990 The Company: Twin Disc designs,

China Orders More MAN Dual-Fuel Units

51/60DF engines to power LNGCs MAN Diesel & Turbo has announced a further order for its MAN 51/60DF engine. After a longer period of evaluation, an international consortium,

Naval Architecture

MN 100: Resolve Marine Group

1510 SE 17th Street, Suite 400 Fort Lauderdale, Fl 33316 Tel: (954) 764-8700  Email: info@resolvemarine.com Website: www.resolvemarine.com President & CEO: Joseph Farrell, Jr.

Green Passenger Ferries from Faaborg Vaerft

The first full-electrical passenger ferry in composite is delivered to Ballerina AB in Stockholm, Sweden. Faaborg Vaerft A/S has delivered the first full-electrical passenger vessel,

MN 100: Robert Allan Ltd.

230-1639 West 2nd Avenue Vancouver, BC V6J 1H3, Canada Tel: (604) 736-9566    Email: info@ral.ca Website: www.ral.ca President: Ken Harford Executive Chairman of the Board: Robert G.

Dynamic Positioning

Oceaneering Exercise Charter Options on DP2 CSV

Oceanteam Shipping ASA says that Oceaneering International, Inc. has exercised both one year options on the CSV 'Bourbon Oceanteam 101' up to February 2017. The

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Pipelines Pod Propulsion Port Authority Salvage Ship Electronics Ship Repair Winch
rss | archive | history | articles | privacy | terms and conditions | 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: 0.1522 sec (7 req/sec)