Measurements of the Dynamical Behavior of Projectiles Over Long Flight Paths.

摘要

The yawing and rolling behavior of projectiles is studied using solar aspect sensors to provide one-dimensional data in the form of solar aspect angle as a function of time of flight. The instrumentation is described and data handling procedures to extract two-dimensional motion from the data are discussed. Several interesting flights of fin and spin-stabilized shell are described in detail. Large amplitude yawing motion and roll reversal with the possibility of resonance have been observed on instrumented flights. The pitch frequencies are well determined and the derived modal amplitudes and phases seem reasonable. Applications and limitations of the technique are discussed. (Author)