Vertical Water Entry of Spheres

Abstract

An experimental investigation of the vertical water entry deceleration of a sphere and a hemisphere-cylinder is described. A common total drag is determined as a function of penetration distance. This result is compared to the result of previous investigators with good agreement occurring with the theory of M. Shiffman and D. C. Spencer and the experiments of C. R. Nisewanger. Possible errors introduced by extrapolation of this result to higher entry speeds are estimated.

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Document Details

Document Type
Technical Report
Publication Date
May 07, 1975
Accession Number
ADA013219

Entities

People

  • Howard K. Steves
  • John L. Baldwin

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accelerometers
  • Bodies
  • California
  • Cameras
  • Classification
  • Coefficients
  • Deceleration
  • Diameters
  • Electronic Equipment
  • Engineering
  • Geometry
  • Measurement
  • Photography
  • Pressure Distribution
  • Pressure Gages
  • Universities
  • Weapons

Readers

  • Fluid Dynamics.
  • Mathematics or Statistics