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ISO 20233-1:2018
Ships and marine technology — Model test method for propeller cavitation noise evaluation in ship design — Part 1: Source level estimation
Translate name
STANDARD published on 23.2.2018
The information about the standard:
Designation standards: ISO 20233-1:2018
Publication date standards: 23.2.2018
SKU: NS-809300
The number of pages: 13
Approximate weight : 39 g (0.09 lbs)
Country: International technical standard
Category: Technical standards ISO
The category - similar standards:
Annotation of standard text ISO 20233-1:2018 :
Description / Abstract: ISO 20233-1:2018 specifies a model test method for propeller cavitation noise evaluation in ship design. The procedure comprises reproduction of noise source, noise measurements, post processing and scaling. The target noise source is propeller cavitation. Thus, this document describes the test set-up and conditions to reproduce the cavitation patterns of the ship based on the similarity laws between the model and the ship. The propeller noise is measured at three stages. The measurement targets for each stage are propeller cavitation noise, background noise, and transmission loss. For the source level evaluations, corrections for the background noise and the transmission loss are applied to the measured propeller cavitation noise. Finally, the full-scale source levels are estimated from the model scale results using a scaling law.
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