Modified Point Mass Trajectory Simulation for Base-Burn Projectiles

Abstract

An addition to the Modified Point Mass Trajectory Model for Rocket- Assisted Projectiles is presented for the exterior ballistic simulation of base- bum projectiles. The addition models the change in aerodynamic base-drag based on the change in base pressure due to the base-bum motor's ejection of hot gas into the wake of the projectile. The mass flow rate of the remaining fuel of the base-bum motor is modeled as a function of the Instantaneous projectile spin rate and atmospheric air pressure. HAWK Doppler radar data collected at Yuma Proving Ground, Arizona, for the 155mm, MI 864 base-bum projectile have been used to verify the modeling approach for a variety of test conditions. Base-Bum Projectile, Trajectory Modeling, Doppler Radar, Aerodynamic Drag.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1992
Accession Number
ADA248292

Entities

People

  • J. E. Danberg
  • R. F. Lieske

Organizations

  • Ballistic Research Laboratory

Tags

DTIC Thesaurus Topics

  • Aerodynamic Drag
  • Air Pressure
  • Base Pressure
  • Burning Rate
  • Computational Fluid Dynamics
  • Doppler Radar
  • Equations Of Motion
  • Flow Rate
  • Fluid Dynamics
  • Hot Gases
  • Mass Flow
  • Mechanical Engineering
  • Munitions
  • National Security
  • Projectiles
  • Propelling Charges
  • Rocket Assisted Projectiles

Fields of Study

  • Engineering

Readers

  • Computational Modeling and Simulation
  • Rocket Propulsion.
  • ballistics.