Projectile Lubrication by Melting Rotating Bands

Abstract

Sliding experiments carried out in the laboratory with a pin-on-disk machine produced appreciably higher coefficients of friction than the actual values measured for projectiles sliding down cannon bores. Although the pin surface melted, the coefficient of friction was at least an order of magnitude higher than expected for liquid film lubrication. The sliders in the laboratory experiments were, of course, much smaller than actual rotating bands and the bearing pressure was limited by distortion of the sliding pin.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1976
Accession Number
ADA026403

Entities

People

  • R. S. Montgomery

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Ammunition
  • Classification
  • Films
  • Friction
  • Gun Barrels
  • Guns
  • Heat Energy
  • Latent Heat
  • Leading Edges
  • Liquid Metals
  • Lubrication
  • Materials
  • Projectiles
  • Rifling
  • Rotating Bands
  • Security
  • Weapons

Fields of Study

  • Physics

Readers

  • Thermal Physics or Thermal Science.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).
  • ballistics.