Resistance and Movement Dynamo-meter

 

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The resistance and movement dynamo-meter is able to measure the resistance of a ship model in calm water and in waves. The movement of the model’s pitch, roll and heave can also be measured.

The dynamo-meter consists basically of a vertical cylinder fixed to the test frame of the carriage by means of an aerostatic bearing in a frame. An air compressor located on the carriage supplies the necessary air for this dynamo-meter. The lower part of the cylinder is connected to the model via gimbals in which the transducer is built to measure two reaction forces. Depending on the size of the transducer, resistance and side forces up to 300 N can be measured.