Dynamometry

The Wolfson Unit designs, constructs and sells dynamometry tailored to the towing tank and windtunnel environment. We use our own dynamometry in all our projects and have exported this technology to other hydrodynamic facilities around the world.

Towing Tank Dynamometers

  • Single post design for sailing yacht and powercraft models up to 3.5m LOA
  • Mini three post design for powercraft models up to 5m LOA
  • Three post design for large scale sailing yacht models 5m+ LOAsuitable for calm water manoeuvring tests on self propelled models.

Wind Tunnel Dynamometer

  • Underfloor 6 axis dynamometer for floor mounted models


3 post ship and sailing yacht dynamometer


Single post dynamometer for ship and sailing yacht testing

3 post - Ship and Sailing yacht - Light Duty

3 post - Ship and Sailing yacht - Heavy Duty


Wind tunnel floor 6 axis dynamometer


3 Post dynamometer for ship models

Single post/ 3 post - Ship and Sailing yacht

Sailing Yacht Heel Fitting

Bespoke Dynamometers

Dynamometers can easily be configured to the customer’s requirements in terms of load/moment ranges and axes of freedom with very little additional cost. The specifications below present the degrees of freedom and measurement ranges.

Specifications

Dynamometer

Axis Restraints

 

Heave

Surge

Sway

Yaw

Roll

Pitch

Single post - ship and sailing yacht

Free

Fixed

Fixed

Fixed - adjustable

Fixed - adjustable

Free

3 post - ship

Free

Fixed

Fixed

Fixed

Fixed

Free

3 post - ship and sailing yacht

Free

Fixed

Fixed

Fixed - adjustable

Fixed - adjustable

Free

 

Dynamometer

Measurement axes and ranges

 

Drag/ Thrust

Side force

Roll moment

Yaw moment

Heave

Pitch

Single post - ship and sailing yacht

0 - 60N,200N,500N

0 - 60N,200N,500N

20Nm

20Nm

300mm

15 deg

3 post - ship

0 - 500N

NA

NA

NA

300mm

10 deg

3 post - ship and sailing yacht

0 - 500N,1500N

0 - 500N,1500N

100Nm

500Nm

300mm adjustable

10 deg