Flight Data on Liquid-Filled Shell for Spin-up Instabilities
Abstract
The stability of a spinning projectile can be adversely affected when a liquid payload is present. Due to the impulsive launch of a spin-stabilized projectile, the liquid payload is subjected to unsteady and time-dependent processes. For example, the liquid must adjust to the rapid spin of the projectile casing. This process is normally called liquid spin-up. For many projectiles, the liquid spin-up process encompasses a large portion of the trajectory, and in fact many flight instabilities have occurred during this spin-up time frame. Flight data for spin-up instabilities of 155mm projectiles are presented and qualitatively discussed with respect to a recently developed model for yaw moments during spin-up.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1984
- Accession Number
- ADA139136
Entities
People
- William P. D'amico Jr.
Organizations
- Ballistic Research Laboratory