@article{GrzesikBaumannWalteretal.2021,
  author    = {Grzesik, Benjamin and Baumann, Tom and Walter, Thomas and Flederer, Frank and Sittner, Felix and Dilger, Erik and Gl{\"a}sner, Simon and Kirchler, Jan-Luca and Tedsen, Marvyn and Montenegro, Sergio and Stoll, Enrico},
  title     = {InnoCube — a wireless satellite platform to demonstrate innovative technologies},
  series = {Aerospace},
  volume    = {8},
  journal   = {Aerospace},
  number    = {5},
  issn      = {2226-4310},
  doi       = {10.3390/aerospace8050127},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-239564},
  year      = {2021},
  abstract  = {A new innovative satellite mission, the Innovative CubeSat for Education (InnoCube), is addressed. The goal of the mission is to demonstrate "the wireless satellite", which replaces the data harness by robust, high-speed, real-time, very short-range radio communications using the SKITH (SKIpTheHarness) technology. This will make InnoCube the first wireless satellite in history. Another technology demonstration is an experimental energy-storing satellite structure that was developed in the previous Wall\#E project and might replace conventional battery technology in the future. As a further payload, the hardware for the concept of a software-based solution for receiving signals from Global Navigation Satellite Systems (GNSS) will be developed to enable precise position determination of the CubeSat. Aside from technical goals this work aims to be of use in the teaching of engineering skills and practical sustainable education of students, important technical and scientific publications, and the increase of university skills. This article gives an overview of the overall design of the InnoCube.},
  language  = {en}
}
@article{KramerBangertSchilling2020,
  author    = {Kramer, Alexander and Bangert, Philip and Schilling, Klaus},
  title     = {UWE-4: First Electric Propulsion on a 1U CubeSat — In-Orbit Experiments and Characterization},
  series = {Aerospace},
  volume    = {7},
  journal   = {Aerospace},
  number    = {7},
  doi       = {10.3390/aerospace7070098},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-236124},
  year      = {2020},
  abstract  = {The electric propulsion system NanoFEEP was integrated and tested in orbit on the UWE-4 satellite, which marks the first successful demonstration of an electric propulsion system on board a 1U CubeSat. In-orbit characterization measurements of the heating process of the propellant and the power consumption of the propulsion system at different thrust levels are presented. Furthermore, an analysis of the thrust vector direction based on its effect on the attitude of the spacecraft is described. The employed heater liquefies the propellant for a duration of 30 min per orbit and consumes 103 ± 4 mW. During this time, the respective thruster can be activated. The propulsion system including one thruster head, its corresponding heater, the neutralizer and the digital components of the power processing unit consume 8.5 ± 0.1 mW ⋅μ A\(^{-1}\) + 184 ± 8.5 mW and scales with the emitter current. The estimated thrust directions of two thruster heads are at angles of 15.7 ± 7.6∘ and 13.2 ± 5.5∘ relative to their mounting direction in the CubeSat structure. In light of the very limited power on a 1U CubeSat, the NanoFEEP propulsion system renders a very viable option. The heater of subsequent NanoFEEP thrusters was already improved, such that the system can be activated during the whole orbit period.},
  language  = {en}
}