EXPERIMENTAL STUDY OF A CAVITY RUNNING BODY
HYDRONAUTICS INC LAUREL MD
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The results of an experimental investigation of a cavity running body are presented. The cavity running body consists of a blunt base nose of a half body of revolution and an afterbody which is completely enclosed by the ventilated cavity. Thus, the afterbody experiences almost no drag and the cavity drag due to the presence of the ventilated cavity becomes a very important component of the drag acting on the cavity running body. Theoretical and experimental results of every component of the drag of the cavity running body are presented and discussed. It is found that the total drag is almost independent of the vapor cavitation number but is highly dependent on the air flow rate to the cavity. The maximum drag reduction is 25 percent.
- Marine Engineering