The Delfi-n3Xt mission (pronounced as: Delfi-next) is second in a development line of CubeSats called the 'Delfi Program' and is successor to the successful Delfi-C³ mission.
Delfi-n3Xt shall be a reliable triple-unit CubeSat of TU Delft which implements substantial advances in 1 subsystem with respect to Delfi-C³ and allows technology demonstration of 2 payloads from external partners from 2012 onwards.
The mission is broken down into the three major objectives of the Delfi Space Program; education, technology demonstration (a.k.a. payloads) and nanosatellite bus advancement. The subsystem which is advanced substantially is the Attitude Determination and Control subsystem. While Delfi-C³ had only a passive magnetic stabilization mechanism, Delfi-n3Xt is equipped with a full three-axis determination and control system. All other subsystems are advanced as well on performance and reliability. There are three external partners with "payloads" onboard Delfi-n3Xt: TNO, ISIS and SystematIC. Delfi-n3Xt is ready for launch since early 2013.
Delfi-n3Xt is launched with a Dnepr launch vehicle from the Yasny, Russia on the 21st of November 2013. Delfi-n3Xt has achieved its mission success after having gathered three months of onboard measurment data and having executed all foresseen technology demonstration experiments. After mission succes was achieved, an experiment caused a (temporary) loss of the Delfi-n3Xt downlink which is currently still under investigation.