THE CAVITY AFTER VERTICAL WATER ENTRY

Abstract

At vertical water entry of a missile the splash varies greatly with nose shape and thus modifies the cavity development. Accordingly, the relations reported earlier between cavities formed by different noses at oblique entry, cannot be applied to vertical entry. An 'Ideal Cavity' is defined as that portion of the cavity near the generating nose, which has not been appreciably affected by such influences as gravity or the difference between ambient pressure and the pressure in the cavity. It is shown that all such cavity portions are geometrically similar, with a size proportional to the square root of the drag force at a given speed.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 12, 1968
Accession Number
AD0679905

Entities

People

  • Albert May

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Agreements
  • Air Pressure
  • Barometric Pressure
  • Demographic Cohorts
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Froude Number
  • Geometric Forms
  • Geometry
  • Munitions
  • Ordnance Laboratories
  • Reynolds Number
  • Square Roots
  • Two Dimensional
  • United States

Readers

  • Approximation Theory.
  • Fluid Mechanics and Fluid Dynamics.
  • Space Exploration and Orbital Mechanics.