EXPERIMENTAL DETERMINATION OF PRESSURE DISTRIBUTION ON A SPHERE DURING WATER ENTRY
NAVAL ORDNANCE TEST STATION CHINA LAKE CA
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The pressure distribution on a 12-inch-diameter sphere during vertical water entry at 23.5 fps was determined by direct pressures versus time measurements at several points on the sphere. From these data, pressure versus angle from the stagnation point was plotted for various penetrations the rise of the free surface of the water versus penetration was determined and the drag coefficient versus penetration was ascertained by graphic integration of the pressure-distribution curves and by acceleration measurement. The results are compared with some theoretical curves.
- Fluid Mechanics