WATER-EXIT BEHAVIOR OF MISSILES. PART 1. PRELIMINARY STUDIES

Abstract

Water-exit launchings were made with a 2-in. diameter hemisphere-head missile at 60-fps nominal water-exit velocity, launching angles of 15, 30, and 90 degrees with respect to the horizontal, and different degrees of cavitation ranging from nearly fully wetted flow to completely enveloping cavitation. Perturbations in missile pitch at water exit increased with decreases in trajectory angle and the max perturbations occurred under conditions of fully developed cavitation. From the results it is inferred that water-exit perturbations will pose problems in service missile water-exit technology. The addition of a nose probe to measure cavitating missile attitudes altered the water-exit perturbations and sometimes caused erratic cavities to form. An annular groove in the missile nose at the zone of cavity separation stabilized the cavity and allowed more consistent results to be obtained.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 11, 1961
Accession Number
AD0273717

Entities

People

  • G. W. Stubstad
  • J. G. Waugh

Organizations

  • Naval Air Weapons Station China Lake

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Pressure
  • Barometric Pressure
  • Boundary Layer
  • Fluid Flow
  • Model Basins
  • Model Tests
  • Munitions
  • Ordnance Laboratories
  • Physics Laboratories
  • Pressure Measurement
  • Standards
  • Surface Properties
  • Surface Tension
  • Test Facilities
  • Trajectories
  • Underwater Ordnance
  • Weapons

Readers

  • Aerodynamics/Aeronautics.
  • Fluid Mechanics and Fluid Dynamics.
  • Marine Propulsion Engineering and Naval Architecture

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference