Dispersion of Spinning Missiles Due to Lift Nonaveraging.
Abstract
A new source of cross-range dispersion is identified for spinning missiles. The dispersion is caused from wind-fixed moment perturbations that produce a strong coupling between angle of attack and lift vector precession rate, in contrast to body-fixed moment-induced dispersion of a rolling, trimmed missile in which lift and roll variations are generally uncoupled. Dispersion is shown to occur for initially untrimmed motion in which roll rate has little influence on the lift vector precession rate. Small wind-oriented moments can adversely affect the precession rate, and dispersion depends strongly on the initial motion conditions. Roll control is ineffective for limiting this type of dispersion, and effective control must provide some means of maintaining a steady, nonzero precession rate. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 28, 1976
- Accession Number
- ADA027582
Entities
People
- Daniel H. Platus
Organizations
- The Aerospace Corporation