Tbe main purpose of this work was to find a way of placing a meaningful scientific payload within the upper atmosphere of Mars such that certain scientific measurements become possible. So the altitude range covered and the possible dweIl time are relevant design drivers and will be explored in greater detail within this thesis. Either concept of flying on Mars, however, be it heavier or lighter than air (read: heavier or lighter than carbon dioxide) is restricted to altitodes weil below 10 km. Since any sustained light at that altitode or higher in such a thin atmosphere is teehnically...