4 papers
Granular clogging across gravities: a unified scaling
Oliver Gaida, Olfa D'Angelo, Jonathan E. Kollmer
Lacking a universal law for granular flows across gravitational environments, fundamental processes such as hopper discharge remain vulnerable to failure in low gravity environment…
The growth of super-large pre-planetary pebbles to an impact erosion limit
J. Teiser, J. Penner, K. Joeris +4
Early dust evolution in protoplanetary disks is dominated by sticking collisions. However, this initial phase of particle growth faces constraints - notably from destructive encoun…
Ultra Low Velocity Ejecta Generated by Slow Impacts on Rubble Pile Asteroids
Kolja Joeris, Laurent Schönau, Matthias Keulen +1
We examine ejecta generated by ultra low velocity impacts under asteroid conditions. In an environment of precisely controlled milligravity and under vacuum, impacts with velocitie…
Controlled Partial Gravity Platform for Milligravity in Drop Tower Experiments
Kolja Joeris, Matthias Keulen, Jonathan E. Kollmer
We detail a platform for partial g environment and an experiment for simulated impacts on asteroid surfaces based on it. The partial g environment is created by a two stage approac…