Nonstop Mars sample return system using aerocapture technologies

In this study, preliminary assessment of a Martian nonstop sample return system is made as a part of Mars Exploration with Landers and Orbiters (MELOS) mission, which is currently under investigation in Japan Aerospace Exploration Agency. In a mission scenario, an atmospheric entry vehicle of aero-maneuver ability is flown into the Martian atmosphere, collects the Martian dust particles and atmospheric gases during the hypersonic atmospheric flight, exits the Martian atmosphere, and is inserted into a parking orbit from which a return system departs for the earth. In order to accomplish controlled flight and successful orbit insertion, aerocapture technologies are introduced into the vehicle guidance and control system. A conceptual design is obtained as a result of the preliminary system analysis.