Effect of a Bore Evacuator on Projectile In-Bore Dynamics

Abstract

Projectile base pressure measurements were taken in a 155-mm M284 gun tube using an Armament Research, Development and Engineering Center-designed instrumentation package incorporated into a modified XM982 artillery projectile. These measurements showed that the base pressure was affected as the projectile passed the bore evacuator ports. The perturbation in base pressure generated a high frequency response in the projectile. A simplified finite element model of the projectile was constructed and verified that the projectile dynamics were captured properly by the instrumentation. A dynamic response was also witnessed at abrupt changes in gun tub cross-section. This response has not been explained to date.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2004
Accession Number
ADA428620

Entities

People

  • Donald Carlucci
  • Jennifer Cordes
  • Julio Vega

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

DTIC Thesaurus Topics

  • Artillery
  • Base Pressure
  • Dynamic Response
  • Dynamics
  • Electronic Components
  • Engineering
  • Frequency
  • Instrumentation
  • Measurement
  • Measuring Instruments
  • Pressure Gages
  • Pressure Measurement
  • Pressure Transducers
  • Projectiles
  • Propelling Charges
  • Waves
  • Weapons

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • ballistics.