Aeroballistic Evaluation and Computer Stability Analysis of the U. S. Navy 20-Millimeter General Purpose Projectile,

摘要

The report presents the results of ballistics range and wind-tunnel measurements of the static force and moment and the pitch-damping,roll-damping and Magnus moments for a General Purpose 20-Millimeter Projectile. Data are presented for a Smooth and Basic configuration. These aerodynamic data are used in a special digital computer program to rapidly assess the stability of the projectiles over various mission profiles. The normal-force and pitching-moment derivatives are evaluated,theoretically,by Wood's method and compared with the measurements. (Author)