The QB50 mission aims at establishing an international network of 50 nano-satellites for multi-point, in-situ measurements in the lower thermosphere and re-entry research. As integral part of QB50, the Delft University of Technology intends to contribute to QB50 the DelFFi mission comprising two out of the 50 nano-satellites. Both satellites will be identical triple-unit CubeSats, each being equipped with a highly miniaturized propulsion system in addition to the science payload. This configuration will allow to demonstrate formation flying between these two nano-satellites which will enhance the QB50 mission in terms of technology demonstration and science return. Here, a staggered approach of increasingly complex operational scenarios for formation flying is developed, analyzed and discussed. Implementation options for critical enabling formation flying technology, resulting from a recently conducted Phase A study, are presented.
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