PressurePores technology is the distribution of pressure relief holes strategically located in the tip region of marine propeller blades that can be incorporated during the propeller design or as a retrofit to mitigate tip vortex cavitation and reduce noise for a quieter propeller.
When Oscar’s PressurePores are precisely placed on marine propellers, cavitation – a major source of URN – is reduced significantly. In fact, in full scale sea trials, we’ve seen a 10dB URN reduction in the range most damaging to marine fauna.
And as cavitation also causes serious damage to propellers, rudders and hulls, our technology will extend their life and performance.
Shipping noise originates from various sources on board a vessel, amongst which the propeller cavitation is considered to dominate the overall radiated noise spectrum above the inception threshold.
By strategically introducing pressure-relieving holes to modify the presence of cavitation, a reduction in the overall cavitation volume can be achieved.
Vessels fitted with our technology will be able to gain entry to environmentally sensitive areas and achieve vital regulatory compliance and sustainability credentials. Ultimately, our PressurePores™ technology will increase their value.
URN is caused by cavitation, the formation and explosive collapsing of gas bubbles on the blade surfaces of marine propellers.
When Oscar’s PressurePores™ are precisely placed on marine propellers, cavitation will reduce significantly. Full scale sea trials on a high cavitating propeller have shown a 10dB URN reduction in the range most damaging to marine fauna.
Cavitation also causes serious damage to propellers, rudders and hulls. Our technology will extend their life and performance, and improve onboard comfort too.
PressurePores™ Benefits
— Reduced URN
— Increased efficiency for new propellers
— Reduced pressure pulse vibration
— Improved crew comfort
— Low operating cost
— Reduced maintenance
— Compliance with regulations
— Enhanced ESG score
Collaboration or License?
Learn how you can collaborate with us, use our URN prediction model or licence our technology to incorporate in your designs.
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