The QB50 mission aims at establishing an international network of 50 nano-satellites for multi-point, in-situmeasurements in the lower thermosphere and re-entry research. As integral part of QB50, the Delft University ofTechnology intends to contribute to QB50 the DelFFi mission comprising two out of the 50 nano-satellites. Bothsatellites will be identical triple-unit CubeSats, each being equipped with a highly miniaturized propulsion system inaddition to the science payload. This configuration will allow to demonstrate formation flying between these twonano-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 anddiscussed. Implementation options for critical enabling formation flying technology, resulting from a recentlyconducted Phase A study, are presented.
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