Feasibility Study of a Slow Entry and Sustained Atmospheric Flight Concept for an Uncrewed Mars Airplane

Abstract

This Master thesis investigates whether a slow entry into Mars’s atmosphere is technically and physically feasible and possible. To achieve this, first the basics of atmospheric reentry are examined, by reviewing past missions conducting the conventional and established ways of reentry. To understand how to avoid using a heat shield it is important to know how those work and why the trajectory of the spacecraft plays a major role, when talking about loads. Based on these insights, the principles of the slow entry concept are defined and a simulation is setup, to compute the trajectory and corresponding thermal loads. By analysing the simulation results, a preliminary concept for spacecraft and trajectory can be developed, showing how a slow entry can be achieved. Finally, by taking a first look at a possible mission design, this thesis presents a phase zero mission study, showcasing the concept for a slow entry approach supported by initial thermal loads calculations, mission design considerations and a preliminary risk assessment.