Product Development

All our dynamometers are fixed in surge and sway and free to pitch and heave. Some specifications are listed below, however dynamometers can be configured to the customer’s requirements with little additional cost.

• Single post design for models up to ~3.5m  
• Multi post designs for models >3.5m or for significant yaw moment models.  

The Wolfson Unit presents a versatile azimuthing thruster base package for use in self-propelled model testing where analysis of the manoeuvring characteristics is required. Key features are:

• Compact leg and gearbox size allows fitting of a number of different thruster cowling designs
• Adjustable vertical immersion to suit cowling design
• Compact size allows propeller diameter sizing over a large range, allowing a choice of model scale which suits the hydrodynamic facility.
• Robust, simple to fit and commission into a model
• Powerful sensored brushless drive motor for accurate control of propeller RPM
• Standard NEMA 23 stepper motor for control of azimuthing angle
• Full 360 degree rotation (single turn in opposed directions)
• Full waterproof sealing at thruster / hull boundary

Wind Tunnel Dynamometers

Model scale sailing yacht wind tunnel testing demands dynamometry that can withstand large roll moments without affecting the accuracy of thrust and sideforce measurements. In response to the lack of suitable off-the-shelf equipment meeting these specifications, the Wolfson Unit took the initiative to develop and manufacture its own sailing yacht aerodynamic testing system, subsequently making it available for commercial use.

• Under floor 6 axis dynamometer 
• Single axis cycling drag dynamometer  

Our expertise with outfitting remote-control models and onboard data acquisition allows us to create effective custom complex electro-mechanical systems. 

• Sensor data logging.  
• Torque and force measurement. 
• Mechatronics. 
• Electric motor drive control.  

Get in touch with our engineers to discuss your project needs.