Multibody Aerothermodynamics of Space Debris Fragments

Abstract

Due to the increasing space transportation activities and possible entry of Near-Earth-Objects at very high velocities, space debris became an issue of safety for our Earth. The evolution of the demise process and formation of fragments has a big influence on the prediction of the ground impact. The available numerical tools have still significant shortcomings in correct physical modelling of the demise and multibody interaction. While small pieces usually burn up during atmospheric re-entry, larger pieces reach the earth’s surface regularly. Typical examples are rocket upper stages and satellites in low orbits that have reached their end of live or are out of control.