The concept of probing the atmosphere of planet Mars by means of a hypersonic drag balloon, a device known as a “ballute”, is a novel approach to planetary science. In this concept, the probe deploys an inflatable drag body out in space and may then enter the atmosphere either once or several times until it slowly descends towards the ground, taking continuous atmospheric and other readings across a large altitude and ground range.

Hannes Griebel discusses the theory behind such a mission along with experience gained during its practical implementation, such as mission design, manufacturing, packing and deployment techniques as well as ground and flight tests. The author also studies other ballute applications, specifically emergency low Earth orbit recovery and delivering payloads to high altitude landing sites on Mars.

Dr. Hannes Griebel completed his doctoral thesis under the supervision of Prof. Dr. Bernd Häusler at the Department of Aerospace Engineering at the Universität der Bundeswehr, München. He was ARCHIMEDES Chief Engineer and Programme Manager and is currently working as a Senior Spacecraft Operations Engineer for Mars Express.