A Methodology for Characterizing Barrel Flexure Due to Tank Motion

Abstract

Barrel centerline curvature is known to influence the location of projectile shot impacts. Superimposed on the unique manufactured barrel centerline is the flexed barrel shape that can occur prior to firing while the tank is on the move. In order to understand and quantify the effects of barrel flexure on gun accuracy, it is necessary to determine what combination of fundamental mode shapes is most likely to occur. A method to accomplish this task is described in this report. The method is demonstrated by enumerating the 10 most likely mode shape combinations (flexed barrel shapes) that were found to occur in an M256 barrel mounted in an MlA2 tank while it traversed the RkC-9 bump course at Aberdeen Proving Ground, MD, at 15 mph.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2000
Accession Number
ADA379991

Entities

People

  • Charles Wells
  • James Newill
  • Mark Bundy
  • Michael Ng
  • Vince Marcopoli

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Aerodynamic Forces
  • Ammunition
  • Composite Materials
  • Fire Control Systems
  • Flight Paths
  • Free Flight
  • Geometric Forms
  • Geometry
  • Line Of Fire
  • Lines (Geometry)
  • Materials
  • Military Research
  • Projectiles
  • Target Tracking
  • United States

Readers

  • Structural Dynamics.
  • Systems Analysis and Design
  • ballistics.