AIRCOAT
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AIRCOAT
  • About us
  • Project
  • Salvinia Effect
  • Antifouling
  • Drag reduction
  • Noise pollution
  • Resources
  • Media

Noise emission
calculation

The underwater noise emission calculation

To investigate the acoustic noise emission of a surface with a permanent air layer, an acoustic noise model was designed and calculations were performed.

The model developed by HSVA was used together with the acoustic material data to calculate the reduction of underwater noise emission.

capacitive sensors
noise monitoring

We observed that acoustic properties of the air layer are changing with increasing draught: the density increases with the static pressure of the water column and with it the acoustic impedance, while the speed of sound stays constant.

A three-layer acoustic model for underwater noise emission showed that a
constant air layer ont the ship hull underwater drastically reduces noise emission, fulfilling the -3 dB KPI target of the project, and even reaching -10 dB and more – a key requirement for environmentally friendly shipping.

noise calcultation 1 cleaned
noise calcultation 2 cleaned
noise calcultation 1 cleaned
noise calcultation 2 cleaned

CONSORTIUM PARTNERS

Coordinated by the Fraunhofer Center for Maritime Logistics and Services CML and scientifically managed by the Karlsruhe Institute of Technology
(which pioneered the air-coating technology and demonstrated initial prototypes),
AIRCOAT brings together a total of ten partners from six European countries.

CONSORTIUM PARTNERS

Coordinated by the Fraunhofer Center for Maritime Logistics and Services CML and scientifically managed by the Karlsruhe Institute of Technology (which pioneered the air-coating technology and demonstrated initial prototypes), AIRCOAT brings together a total of ten partners from six European countries.

cml
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fml_v5
abt
hsva
BIC
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danaos
revolve
AIRCOAT-sescaled_cropped
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The AIRCOAT project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°764553.

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