Effect of Fin Slots on the Static and Dynamic Stability Characteristics of Finned Bodies.
Abstract
Static and dynamic stability characteristics of a cruciform, slotted fin configuration are presented. Aerodynamic coefficients ar extracted from single degree of freedom, free oscillation wind tunnel tests employing nonlinear least squares procedures. The linear and nonlinear variations with angle of attack of the restoring and damping moment coefficients are presented for various fin slot sizes at subsonic speeds. Results indicate that, as slot size increases, the nonlinear contributions decrease in magnitude to a greater extent than the linear terms. Based on the signs of the various moment contributions, it was found that, while stability is reduced at small angles of attack due to increased slot size, greater stability is affected at moderate angles of attack. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1971
- Accession Number
- AD0728016
Entities
People
- Peter Daniels
- Thomas A. Clare
Organizations
- Naval Surface Warfare Center Dahlgren Division