Accession Number:

AD0891249

Title:

Boattail Effects on the Dynamic Stability of the Three-Caliber Army-Navy Basic Spinner Projectile

Descriptive Note:

Final rept. 15 Jan 1970-14 Jan 1971

Corporate Author:

NOTRE DAME UNIV IN DEPT OF AEROSPACE AND MECHANICAL ENGINEERING

Report Date:

1971-02-01

Pagination or Media Count:

90.0

Abstract:

Wind tunnel tests were conducted to study the effects of a boattail on the dynamic stability of the three-caliber Army-Navy basic spinner projectile. Three-degrees-of-freedom angular data was obtained in vertical subsonic wind tunnel tests on one model with no boattail and on one model with a 7.5-degree boattail. Data reduction yielded the restoring, damping, and Magnus moments as functions of time and nonlinear functions of angle of attack for each model. The testing technique employed a low friction jewel bearing model mount and a means for obtaining two-axis data.

Subject Categories:

  • Ammunition and Explosives
  • Armor
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE