Data Processing for Ship Screw Propellers Measurements

Tom Savu

doi:10.4028/www.scientific.net/MSF.957.239

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HomeMaterials Science ForumMaterials Science Forum Vol. 957Data Processing for Ship Screw Propellers...

Data Processing for Ship Screw Propellers Measurements

Abstract:

A data acquisition system was developed for measuring standardised ship propeller’s parameters. The hardware consists of two linear and one rotary encoder, all sending the data to a counter/timer data acquisition board. The software is first aligning the different coordinates systems of the propeller and of the three encoders . Data processing is initially performed for compensating the effects of different encoders’ resolutions. There are then computed the blade profile’s length and the coordinates of the points belonging to the blades’ reference lines, together with the local pitch variations on each radius and blade, the mean pitch per blade and the mean pitch of the propeller. A discussion is made about choosing the most appropriate number of points where the local pitch is computed, thus providing useful data for estimating the best way for propeller’s overhauling.

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Periodical:

Materials Science Forum (Volume 957)

Pages:

239-246

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.957.239

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Online since:

June 2019

Authors:

Tom Savu*

Keywords:

Blade Parameters, Data Acquisition, Local Pitch, Profile Scanning, Ship Propeller

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References

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