Tokyo University of Marine Science and Technology

Masahiro Osakabe

Hayato Kondo

An underwater propulsion apparatusaccording to an embodiment includes a main bodyhaving a conical tail portion, a channelhaving an inletin the outer circumferential surface of the main bodyand a nozzleon the side downstream of the inletand in the tail portion, at least one pumphaving an impellerprovided in the channel, a diffuserattached to the main bodyso as to surround the outer circumference of the nozzle, and a plurality of direction control wingsattached to the outer surface of the main bodyand located in positions downstream of the nozzleand close thereto, each of the plurality of direction control wingshaving an upstream end pivotally supported by the main body

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Tokyo, Japan

Masahiro Osakabe