Accession Number:

ADA248292

Title:

Modified Point Mass Trajectory Simulation for Base-Burn Projectiles

Descriptive Note:

Final technical rept. Sep 1990-Dec 1991

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1992-03-01

Pagination or Media Count:

51.0

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 motors 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.

Subject Categories:

  • Guided Missile Trajectories, Accuracy and Ballistics
  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE