Jens Rießelmann

• Technische Universität Berlin

To meet the need of high performance thermal management materials in the field of space application, thermal interfaces made out of copper composite materials reinforced with carbon nanotube (CNT) have been prepared via powder metallurgy combined with hot extrusion. The CNT content was controlled between 3 and 25 vol.%. The distribution of CNT in t...

To meet the need of high performance thermal management materials in the field of space application, thermal interfaces made out of copper composite materials reinforced with carbon nanotube (CNT) have been prepared via powder metallurgy combined with hot extrusion. The CNT content was controlled between 3 and 25 vol.%. The distribution of CNT in t...

A novel approach in satellite development is redesigning the known state-of-the-art monolithic bus architecture into an innovative system design based on modular building blocks. A fully operational satellite can be built by combining several modules with a standardized form factor but individual functionality. This design approach can help to redu...

In the last years the popularity and with that performance of COTS single-board computers and systems-on-a-chip (SoC) with partially open designs and software systems like the Raspberry Pi, Arduino, or BeagleBoard raised significantly. Thanks to their wide availability, low price, and open adaptability they are widely used in broad communities amon...

In the last years the popularity and with that performance of COTS single-board computers and systems-on-a-chip (SoC) with partially open designs and software systems like the Raspberry Pi, Arduino, or BeagleBoard raised significantly. Thanks to their wide availability, low price, and open adaptability they are widely used in broad communities amon...

In the last years the popularity and with that the performance of single-board computers and systems on a chip (SoC) with partially open designs and software systems like the Raspberry Pi, Arduino, or BeagleBoard has raised significantly. Thanks to their wide availability, low price, and open adaptability they are widely used in broad communities a...

One focus of programs like DARPA’s Phoenix program and DLR’s iBOSS project is the cost reduction of space-based systems. These projects aim at the re-design of established state-of-the-art monolithic bus architectures into an innovative modular and hence serviceable system design. The modularization of space systems would be a major step towards se...

n this paper we present the prototype for a hybrid testbed for modular satellites. Modular satellites are being investigated as low-cost and sustainable approaches for a new space infrastructure in the near term future. Traditional approaches for the development of spacecraft buses and payloads have been very costly, including large facilities for...

The iBOSS (intelligent Building Blocks for On-Orbit Servicing of Satellites) concept is to decompose a spacecraft into single modules, which can be stuck together to work like a monolithic satellite. This offers the opportunity to develop serviceable and reconfigurable space systems. It can help to reduce space debris and costs, which are two impor...

Space debris and cost reduction are two important challenges for todays space industry. One possible concept to handle these topics is to develop serviceable and reconfigurable space systems. The modularization of space systems would be a major step towards that goal, as it makes replacing or upgrading components in on-orbit servicing missions feas...

On-Orbit Servicing (OOS) offers a highly attractive solution to maintain a space system in orbit, to replace or implement new payloads and components and to remove space debris. This leads to an extension of spacecraft lifetime, an improvement of the satellite performance and the realization of new mission scenarios. The presented concept is develo...

In der Raumfahrt sind derzeit einige Bestrebungen im Gange On-Orbit Satellite Servicing (OSS) zu etablieren um Herausforderungen wie Weltraummüll zu begegnen und Kosten zu senken. Dazu werden unter anderem modulare Systeme mit leicht austauschbaren Komponenten benötigt. Da es in der Raumfahrt und allgemein kaum Erfahrungen mit modularen, rekonfigur...

On-Orbit Servicing enables the ability to maintain a space system. It also offers a highly attractive solution to replace or implement new payloads and components. This contributes to an improvement of the satellite performance, the extension of the spacecraft lifetime and the realization of new mission scenarios. The iBOSS (intelligent Building Bl...

SEPSAT (Spherical EUV- and Plasma Spectrometer-Satellite) is a nanosatellite that will observe several parameters of space weather, especially solar Extreme Ultraviolet Radiation (EUV), the higher atmosphere and effects of solar fluctuation on parameters of the ionosphere. This helps to improve our knowledge of integrity and accuracy of GNSS signal...

Because of their high cost effectiveness and their variability pico-satellites become more attractive for future space missions. These high integrated satellites with a mass up to 1kg gain more importance for several space missions such as security, disaster monitoring, earth observation and communication. With the increasing importance of these...

On the 22nd of October 2008, EuroLaunch launched the REXUS-4 rocket at Esrange in Northern Sweden. EuroLaunch is a joint venture of the DLR Mobile Rocket Base and the SSC Esrange Space Center. REXUS-4 was a two-stage unguided solid propellant sounding rocket. The vehicle consisted of a Nike motor as 1st stage, an Improved Orion motor as 2nd stage,...

On the 22nd of October 2008 EuroLaunch launched the REXUS-4 rocket at Esrange in Northern Sweden. EuroLaunch is a joint venture of the DLR Mobile Rocket Base and the SSC Esrange Space Center. The REXUS-4 payload was comprised of five technological experiments from German and Swedish Universities. The REXUS-4 mission was also the maiden flight of a...