Experimental Research on Horizontal Rotation of Remotely Operated Vehicles Induced by External Forces Near the Surface of the Ocean
When a remotely operated vehicle (ROV) is lowered from its support vessel by a cable, it rotates horizontally because of external forces as it nears the surface of the ocean. This causes the cable to twist. This paper describes experiments using a model of the ROV ABISMO in a water tank to improve safety by examining the waves and the wake flow of propellers as possible causes of the external twisting forces. These experiments on wave effects evaluated the effect of wave height, wavelength, and submerged depth of the model. In addition, the model was varied to include different configurations of fins and outer covers. The experiments on the effect of propeller wake flow evaluated the effect of the horizontal propeller offset and the submerged model depth. The horizontal rotation of the ROV induced by the waves and the wake flow was observed in some cases. The results showed that the wave characteristics, offset, and submerged depth all influenced the generation of horizontal rotation. It was also found that the addition of a horizontal fin and extended vertical fins reduced the horizontal rotation.
Document Type: Research Article
Publication date: 2009-06-01
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- The Marine Technology Society Journal is the flagship publication of the Marine Technology Society. It publishes the highest caliber, peer-reviewed papers on subjects of interest to the society: marine technology, ocean science, marine policy and education. The Journal is dedicated to publishing timely special issues on emerging ocean community concerns while also showcasing general interest and student-authored works.
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