A STUDY OF THE WATER-ENTRY CAVITY

Abstract

For missiles producing clean cavities after water entry the cavity development is shown by theory to depend significantly only on: entry angle, an effective mass, and a Froude number based on the nose-flat diameter. A method is outlined for estimating pressures in closed, almost-steady cavities, from cavity geometry. Data from application of these methods to water-entry records of models are given. Influence of effective mass was small. The pressures in steady cavities were estimated as 0.5 to 1.3 atmospheres.

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Document Details

Document Type
Technical Report
Publication Date
Dec 04, 1963
Accession Number
AD0611406

Entities

People

  • Albert May
  • William R. Hoover

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Cameras
  • Contours
  • Correlation Techniques
  • Fluid Dynamics
  • Fluid Mechanics
  • Froude Number
  • Gun Mounts
  • Mechanical Phenomena
  • Mechanics
  • Munitions
  • Ordnance Laboratories
  • Photographs
  • Physics Laboratories
  • Shape
  • Trajectories
  • United States

Readers

  • Fluid Dynamics.
  • Marine Propulsion Engineering and Naval Architecture
  • Mathematics or Statistics