Machine factory
Burgmetal located in the Dutch town called Waterlandkerkje has developed
together with DMS Holland a dynamic stabilizing system for powerboats based on
the Magnus-effect.
The Magnus-effect
describes how the rotation of an object through a media influences its own
movement, i.e. the spinning effect of a ball in flight changes its direction.
The dynamic
stabilizing system consists of two rotating tubes mounted under a powerboat. On the port and starboard sides there are two vertical mounted axles. Perpendicular to
these two axles there are two horizontal axles with fast spinning tubes - these
rotating tubes assist in stabilizing the boat. The horizontal fast spinning
tubes are manufactured by Hall Composites in Breskens, The Netherlands.
When a
powerboat starts to roll by waves from other boats or the wind, the dynamic
system starts its control function. The two vertical axles are rotated so the
horizontal tubes are perpendicular to the direction of transit. A system of
sensors and control equipment causes the two horizontal spinning tubes to rotate
in a controlled fashion, either left or right independent of each other. The
rotating tube on port can spin clockwise, while in the distance to the next wave
it can spin counter clockwise. Meanwhile, the starboard rotating tube can
perform completely different movements. Due to the fast changing rotational
movement, a force from the Magnus-effect is created, counteracting the rolling
movement of the boat. In calm water the vertical axles will rotate the spinning
tubes in their return position in the length of the boat or direction of
travel, minimizing the resistance of drag.
The horizontal fast
spinning tubes are constructed from an inner and outer tube. The inner tube has
a conical part at the center for mounting to the hydraulic powered driving
shaft. The inner tube is bonded to the outer shaft; this has a metal ring for
connecting a cover lid. Learn more here:
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