Test and Development of 3-in./70 AA Probert Projectiles. Test of 3-in./ 70 AA Projectiles Fired in Gun with Oily Bore

Abstract

Twelve (12) 3-in./70 AA Projectiles Type Ex 24 Mod 9 were fired for recovery in the 3-in./70 gun Type G Mod 9 No. 24581. The subject gun, although having been fired only 554 equivalent service rounds, was in a badly worn condition due to spiral wear. The worn barrel was oiled with Navy Symbol 5190 oil to determine the effect on the rotating bands and the spin rate of the 3-in. /70 AA Projectiles. The firing was conducted in groups of three rounds each, the bore of the gun being oiled prior to the firing of the first round of each group. It is concluded that the presence of oil in the bore of a 3-in./70 G-9 gun decreases band wear.

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Document Details

Document Type
Technical Report
Publication Date
Mar 25, 1952
Accession Number
AD0499529

Entities

People

  • W. O. Taylor

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Ballistics
  • Gun Barrels
  • Guns
  • Measurement
  • Munitions
  • Photographs
  • Projectiles
  • Recovery
  • Rotating Bands
  • Security
  • Terminal Ballistics
  • Terminals

Readers

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  • Marksmanship and Weaponry.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).