Accession Number:

AD0611406

Title:

A STUDY OF THE WATER-ENTRY CAVITY

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1963-12-04

Pagination or Media Count:

87.0

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.

Subject Categories:

  • Guided Missile Trajectories, Accuracy and Ballistics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE