Accession Number:

ADA416885

Title:

Linear Theory of a Projectile With a Rotating Internal Part in Atmospheric Flight

Descriptive Note:

Final rept. May 2002-May 2003

Corporate Author:

OREGON STATE UNIV CORVALLIS DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

2003-07-01

Pagination or Media Count:

53.0

Abstract:

Dynamic modeling of the atmospheric flight mechanics of a projectile equipped with an internal rotating disk is investigated and a modified projectile linear theory is established for this configuration. To model this type of projectile requires alteration of several of the coefficients of the epicyclic dynamics leading to changes in the fast and slow epicyclic modes. A study of the frequency and damping properties of the epicyclic modes is conducted by systematically varying disk mass, rotational speed, and location. It is shown that the presence of an internal rotating disk can cause substantial changes in the epicyclic dynamics, including instability, in some configurations.

Subject Categories:

  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE