HYPERVELOCITY KILL MECHANISMS PROGRAM

Abstract

Impact work is reported and includes studies of: the effect of projectile density and angle of impact on ablative hole size, the minimum energy required for the perforation of flat-plate and conical structures, and impact damage to foamfilled enclosures. The projectiles used were nylon, Al, steel and U spheres. Damage effectiveness of dense projectiles fired at low impact angles appear to be much superior to the lighter projectiles. Results indicate that, for Al and steel spheres, the maximum depth of the spall particle penetrations decrease as the velocity increases, for velocities greater than 5 km/sec. The more dense projectiles produced the deepest spall penetrations and the smallest hole sizes in ablatives. Hypervelocity impacts into ablative targets backed by enclosures filled with polyurethane foam gave a measure of the effectiveness of these materials.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1964
Accession Number
AD0355521

Entities

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Ablative Materials
  • Air Force
  • Boundary Layer
  • Composite Materials
  • Computational Fluid Dynamics
  • Energy Transfer
  • Failure Mode And Effect Analysis
  • Geometry
  • Heat Transfer
  • Measurement
  • Munitions
  • Ordnance Laboratories
  • Pressure Distribution
  • Test And Evaluation
  • Test Facilities
  • Turbulent Mixing
  • Wind Tunnels

Readers

  • Explosive Engineering.
  • ballistics.

Technology Areas

  • Hypersonics