Boattail Effects on the Dynamic Stability of the Three-Caliber Army-Navy Basic Spinner Projectile

Abstract

Wind tunnel tests were conducted to study the effects of a boattail on the dynamic stability of the three-caliber Army-Navy basic spinner projectile. Three-degrees-of-freedom angular data was obtained in vertical subsonic wind tunnel tests on one model with no boattail and on one model with a 7.5-degree boattail. Data reduction yielded the restoring, damping, and Magnus moments as functions of time and nonlinear functions of angle of attack for each model. The testing technique employed a low friction jewel bearing model mount and a means for obtaining two-axis data.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1971
Accession Number
AD0891249

Entities

People

  • Charles W. Ingram
  • John D. Nicolaides
  • Thomas H. Noethen

Organizations

  • University of Notre Dame

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Aerodynamic Characteristics
  • Aerodynamic Forces
  • Aerodynamic Stability
  • Air Force
  • Air Force Facilities
  • Cameras
  • Center Of Gravity
  • Data Acquisition
  • Data Reduction
  • Mechanical Engineering
  • Munitions
  • Subsonic Wind Tunnels
  • Test And Evaluation
  • Test Equipment
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Test and Evaluation
  • Control Systems Engineering.