Laboratory impact splash experiments to simulate asteroid surfaces

  title={Laboratory impact splash experiments to simulate asteroid surfaces},
  author={Tabea Bogdan and Jonathan E. Kollmer and Jens Teiser and Maximilian Kruss and Gerhard Wurm},
Stick-slip Dynamics in Penetration Experiments on Simulated Regolith
The surfaces of many planetary bodies, including asteroids and small moons, are covered with dust to pebble-sized regolith held weakly to the surface by gravity and contact forces. Understanding the
Experiments on rebounding slow impacts under asteroid conditions
We present a newly developed experiment for the examination of low-speed impacts under asteroid conditions. More specifically, our experimental setup enables us to simulate a very clean milligravity
Effects of reduced gravity on the granular fluid-solid transition: underexplored forces can dominate soft matter behaviors
  • Geology
  • 2021
Granular media are soft matter systems that exhibit some of the extreme behavior of complex fluids. Understanding of the natural formation of planetary bodies, landing on and exploring them, future
Understanding planet formation using microgravity experiments
In 2018, images were released of a planet being formed around the star PDS 70, offering a tantalizing glimpse into how planets come into being. However, many questions remain about how dust evolves
Rigidity Percolation and Frictional Jamming


The grain-bed impact process in aeolian saltation
SummaryWe report the results of impact experiments in which high velocity steel spheres (BBs) were directed against a loose bed of similar particles. The purpose of these experiments is to shed some
Grain scale simulations of loose sedimentary beds: the example of grain-bed impacts in aeolian saltation
Sediment transport by wind is one of many processes of interest to the geomorphologist in which grain to grain contacts play an important role. In order to illustrate the modelling of collections of
Low-Velocity Microgravity Impact Experiments into Simulated Regolith
Abstract We describe the Collisions Into Dust Experiment (COLLIDE), a microgravity experiment to study the outcome of very low velocity (1–100 cm/sec) collisions into a simulated regolith. The
Ray Systems and Craters Generated by the Impact of Nonspherical Projectiles.
By impacting bodies of different geometries, it is shown that the crater size follows the same power-law scaling with the impact energy found for spherical projectiles, and the crater rim becomes circular as the impactEnergy is increased regardless of the projectile shape, which helps to understand why most impact craters in nature are rounded.
Splash detail due to a single grain incident on a granular bed.
Differences are observed between the distributions of grains ejected during the earlier and later splash periods: the form of the vertical ejection-speed distribution varies from a power-law form to a lognormal form with time, which may determine grain trajectory after ejection.
Simulation of Eolian Saltation
The evolution of the saltating population and all its characteristic profiles is calculated from inception by pure aerodynamic entrainment through to steady state, and calculated steady state mass fluxes are within the range ofmass fluxes measured in wind tunnel experiments.
Are Pebble Pile Planetesimals Doomed?
In parabolic flight experiments we studied the wind induced erosion of granular beds composed of spherical glass beads at low gravity and low ambient pressure. Varying g-levels were set by
Regolith behavior under asteroid-level gravity conditions: low-velocity impact experiments
AbstractThe dusty regolith covering the surfaces of asteroids and planetary satellites differs in size, shape, and composition from terrestrial soil particles and is subject to environmental
Particle dynamics method simulations of stochastic collisions of sandy grain bed with mixed size in aeolian sand saltation
[1] This paper presents a statistical approach to predict the behavior of liftoff grains on the basis of simulation of random collisions between incident grains and the mixed sand bed by means of the
The impact process in aeolian saltation: two‐dimensional simulations
A critical event in the trajectory of a sand grain saltating in air is its interaction with the surface. We examine the phenomenon of grain-bed impacts in two dimensions using a combination of