DGAP-News

OHB SE: 'Max Valier' nano-satellite successfully launched - Seite 2

Growing complexity

Initially, a simple satellite model capable of mastering the basics was planned. However, this quickly changed when the MPE offered the µROSI x-ray satellite as a payload. The purpose of this mission is to explore the entire heavens to search for at least 100 light sources in the soft x-ray range. The difference is that this time the data will be available not only to scientists but also to hobby astronauts. The satellite with the call sign II3MV will be transmitting its data unencrypted on the amateur radio frequencies 145.860 MHz and 145.960 MHz.

With the inclusion of the telescope, the "Max Valier Sat" grew enormously in complexity, of course, as it requires precise pitch control mechanisms so that it can be aligned accurately and kept stable in space. At the same time, OHB developed an outer casing for the nano-satellite that already integrates the electronic boards. A number of structural components were made from special materials using 3D printing and will be tested and qualified on this mission for future use in larger satellites. The compact solution for the structure ensures substantial weight reductions and saves a large amount of space. As the project team did not want this capacity to go to waste, further experiments were added.

Team spirit and technology

The payloads came from all parts of the OHB Group and testify to a true team spirit. Thus, Swedish company ÅAC Microtec is testing the on-board computer for the MATS research mission that it is developing in conjunction with OHB Sweden for the InnoSat microsatellite. In addition, ÅAC has contributed a newly developed TDRS modem. TDRSS stands for "Tracking and Data Relay Satellite System" and is used only by NASA and the US government to send data from low-orbiting satellites to the ground via geostationary satellites more swiftly and reliably. OHB System provided the "Software Defined Radio" technology experiment which in contrast to conventional transmitters is not rigidly oriented to a narrow frequency range but can be reprogrammed and updated in space. An AIS receiver from Luxspace for picking up and processing global ship data is also included in the high-tech package. Last but not least, "Max Valier Sat" also contains preliminary prototypes of the "Sprites" chips sets from the major Breakthrough Startshot project. With a size of only 3.5 square centimeters and a weight of just four grams, thousands of the nano-spacecraft are to be sent to Alpha Centauri in around 20 years' time.