EXPERIMENTAL DETERMINATION OF PRESSURE DISTRIBUTION ON A SPHERE DURING WATER ENTRY

Abstract

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.

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Document Details

Document Type
Technical Report
Publication Date
Oct 27, 1961
Accession Number
AD0272577

Entities

People

  • C. R. Nisewanger

Organizations

  • Naval Air Weapons Station China Lake

Tags

DTIC Thesaurus Topics

  • Accelerometers
  • Accuracy
  • Capacitance
  • Frequency Response
  • Gages
  • Geometry
  • Measurement
  • Measuring Instruments
  • Munitions
  • Ordnance Laboratories
  • Oscilloscopes
  • Physics Laboratories
  • Pressure Distribution
  • Pressure Gages
  • Pressure Measurement
  • Pressure Transducers
  • Resonant Frequency

Readers

  • Aerodynamics/Aeronautics.
  • Fluid Dynamics.
  • Regression Analysis.