Engineering topics

OKeefe, John D.

Publications and source records attributed to OKeefe, John D..

2 records

NASA NTRS2001

Chicxulub Ejecta Dynamics

We modeled in detail the ejecta dynamics associated with the Chicxulub impact. We determined: (1) ejecta trajectories, (2) stratigraphic motions, (3) depth of ejecta stages, (4) thermodynamic histories of the ejecta particles, and (5) the final ejecta distribution. Additional information is contained in the original extended abstract.

OKeefe, John D.↗

NASA NTRS2001

Impact on Comets and Asteroids

We characterized the impact physics in collisions on porous bodies by various density projectiles and defined different penetration modes (compression, spreading, or breakup) based on transitions between instability regimes. Additional information is contained in the original extended abstract.

OKeefe, John D.↗