# InnCube--A Wireless Satellite Platform to Demonstrate Innovative Technologies
## 4 Conclusions Outlook  
Aboard the InnoCube mission of TU Braunschweig and the University of Wuerzburg, the next level of innovative technologies will be flown. The first wireless satellite data bus using SKITH technology should provide numerous advantages that are utilized in the 3U CubeSat design. An easily accessible modular structure enables the switching of satellite modules within minimum time and, theoretically, in any phase of the project. Hardware and software are structured in a modular way, having different modules for different tasks and following an app-centred approach based on two frameworks: Rodos and Corfu. In addition, a novel experimental structural energy storage WallE-2-Space payload is to be tested and the performance analysed in a relevant operational environment. The development of a software-defined GNSS receiver that allows a flexible selection of GNSS signals should enable precise orbit knowledge for small satellites. This makes conjunction assessments more accurate, can prevent collisions, may help to stabilize the space debris environment and stimulates future research in this field. To verify the GNSS accuracy, a laser retro reflector is designed and scaled down to fit to a CubeSat system.  
The upcoming steps are the manufacturing, integration, and test in the given timeline until the envisioned launch in early 2023 and verification of the technologies within the minimum one year in orbit operation. The upcoming challenges of this project are the detailed electronic board design and experimental charge regulation of the WallE-2-Space payload and finding the best integration scenario that minimizes the effect on battery performance. Furthermore, the SKITH modules need to be integrated into the circuit board design of the payload PCB and modules with COTS components. Finally, the software must be completed, especially the payload software and payload configuration app. All those tasks within this CubeSat project will create an attractive, practice oriented and practice relevant form of education for the involved students who will acquire specific technical knowledge and learn at an early stage to work in a team and result-oriented manner according to deadlines.  
Conceptualization, S.M., E.S. and B.G.; software F.S. and F.F.; formal analysis, J.-L.K. and M.T.; investigation E.D. and S.G.; writing--original draft preparation, B.G.; writing--review and editing, S.G., B.G., T.B., T.W., F.F., F.S., E.D. and E.S.; visualization, M.T. and J.-L.K.; project administration, T.W. and B.G.; funding acquisition, S.M. and E.S. All authors have read and agreed to the published version of the manuscript.  
This work is supported (support code 50 RU2001/50 RU2000) by the Federal Ministry for Economic Affairs and Energy on the basis of a decision by the German Bundestag. We acknowledge support by the German Research Foundation and the Open Access Publication Funds of Technische Universitat Braunschweig.  
The authors like to acknowledge the great cooperation and work of the Avionics Systems department of Institute of Space Systems of DLR Bremen. Thanks to the Institute for ParticleTechnology (iPAT) of Technische Universitat Braunschweig for previous and continuous cooperation and support with [PERSON]#E. Further, the authors thank [PERSON] who provided the testbed and his expert knowledge for testing the prisms for the laser ranging payload at the GFZ Potsdam. Also, thanks to our sponsors Valispace and ITP Engines UK Ltd. for ESATAN-TMS. We further acknowledge the motivated students, who started to form the CubeSat group and are going to work and accompany us during this project until the launch and beyond.  
The authors declare no conflict of interest.