Accession Number:

ADA149022

Title:

Projectile Motion in a Flexible Gun Tube

Descriptive Note:

Final rept. 15 Nov 1982-15 Mar 1984

Corporate Author:

S AND D DYNAMICS INC HUNTINGTON NY

Personal Author(s):

Report Date:

1984-10-01

Pagination or Media Count:

84.0

Abstract:

A general, six degree-of-freedom model of a projectile of finite geometry and inertia traveling in a flexible, rifled or smoothbore gun tube has been developed. The model accommodates projectile spin, mass eccentricity, projectilebore interfacial friction, elasticplastic deformation of the projectile rotating band, and balloting--including bourrelet impact and rebound with the bore. The model is unrestricted regarding gun tube motion, and provides the ability to assess the mutual effects of projectilegun-tube interaction when solved simultaneously with the equations of a compatible gun dynamics simulation, such as DYNACODE-G. The basic formulation has been compared with other projectile in-bore motion formulations and descriptions appearing in recent literature, and is considered to be the most general developed to date. In addition, the model has been correlated with experimental in-bore radar doppler data obtained from firings of a specially designed 37mm weapon, and has demonstrated excellent theoreticalexperimental agreement.

Subject Categories:

  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE