Abstract
The effects of oblique impact angle on ejecta fragment size were investigated by striking aluminum alloy 6061-T6 targets with 3.2-mm-diameter aluminum alloy 2017-T4 spheres at velocities 4 km/s. The two-stage lighet-gas gun at the Institute of Space and Aeronautical Science (ISAS)/ Japan Aerospace Exploration Agency (JAXA), was used for the experiments. The cumulative number of ejecta was proportional to the square of the vertical-direction component of the impact velocity. The experimental formula for the cumulative number distribution of ejecta size was created using bilinear exponential distribution.
