INVESTIGATION OF STRUCTURAL IMPLICATIONS OF METEOROID IMPACT.
Rept. for Apr 62-Jun 64,
NORTH AMERICAN AVIATION INC DOWNEY CALIF
Pagination or Media Count:
Cratering and penetration data were obtained experimen tally with intact, spherical, 50-micron-diameter borosilicateglass projectiles at velocities ranging from 8,000 to 60,000 feet per second in the Mark IV hypervelocity projectile accelerator facility at S and ID. Empirical constants for Charters and Summers equation, and for the logarithmic law proposed by Herrmann and Jones were determined from experimental results on quasi-infinite targets for aluminum, magnesium, beryllium, steel, and glass target materials. In the case of aluminum and steel, a relatively close correspondence exists at high velocities between Bjorks theoretical penetration results and the empirical logarithmic law proposed by Herrmann and Jones. The correlations of quasiinfinite target data with the equations of Charters and Summers, and Herrmann and Jones give comparable results in the experimental velocity range. Author