Surveying dynamic deformation of rotating propellar in water tunnel

Ya Lin Yue; En Rong Qi; Pin Han Hsu; Xiaoping Wu; Yong Sheng Shu

doi:10.1117/12.269786

20 March 1997 Surveying dynamic deformation of rotating propellar in water tunnel

Ya Lin Yue, En Rong Qi, Pin Han Hsu, Xiaoping Wu, Yong Sheng Shu

Proceedings Volume 2921, International Conference on Experimental Mechanics: Advances and Applications; (1997) https://doi.org/10.1117/12.269786
Event: International Conference on Experimental Mechanics: Advances and Applications, 1996, Singapore, Singapore

Abstract

Surveying deformation of propeller blade under hydrodynamical load is a factual engineering problem when propeller has been developed to a certain stage. This paper develops a photoelectronic method based on subpixel high precision object position surveying. A thin laser beam is incident upon a small reflector adhered to the surveying point on blade, the reflected light is focused on a frosted glass and there appears a facula. The angular deformation of the surveying point causes the facula to move and the motion is detected by an image processing system. The relationship between the motion and the angular deformation under the influence of refraction index is given. The flash method and the facula image grab are also discussed. Finally, angular deformation of 48 surveying points of a highly skewed propeller model of a 2800 TEU container ship under mooring status rotating at 500 and 750 rpm are successfully obtained.

Citation Download Citation

Ya Lin Yue, En Rong Qi, Pin Han Hsu, Xiaoping Wu, and Yong Sheng Shu "Surveying dynamic deformation of rotating propellar in water tunnel", Proc. SPIE 2921, International Conference on Experimental Mechanics: Advances and Applications, (20 March 1997); https://doi.org/10.1117/12.269786

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