Marine Link
Monday, December 5, 2016

Efforts continue to improve the Modeling of Thrusters

September 20, 2013

  • Robert Heerkink is project manager at the Ships department of MARIN, the Maritime Research Institute Netherlands.
  • 7 deg. tilted axis,  5 deg. tilted nozzle
  • Model with mounted thrusters
  • Robert Heerkink is project manager at the Ships department of MARIN, the Maritime Research Institute Netherlands. Robert Heerkink is project manager at the Ships department of MARIN, the Maritime Research Institute Netherlands.
  • 7 deg. tilted axis,  5 deg. tilted nozzle 7 deg. tilted axis, 5 deg. tilted nozzle
  • Model with mounted thrusters Model with mounted thrusters

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)
 



 
Maritime Reporter Magazine Cover Nov 2016 - Workboat Edition

Maritime Reporter and Engineering News’ first edition was published in New York City in 1883 and became our flagship publication in 1939. It is the world’s largest audited circulation magazine serving the global maritime industry, delivering more insightful editorial and news to more industry decision makers than any other source.

Subscribe
Maritime Reporter E-News subscription

Maritime Reporter E-News is the subsea industry's largest circulation and most authoritative ENews Service, delivered to your Email three times per week

Subscribe for Maritime Reporter E-News