Florian Patzwahl

• Doctor of Engineering
• Systems Engineer at OroraTech GmbH

Model-based systems engineering (MBSE) aims at creating a model of a system under development, covering the complete system with a level of detail that allows to define and understand its behavior and enables to define any interface and work package based on the model. Once the model is established, further benefits can be reaped, such as the analy...

Model-Based Systems Engineering aims at creating a model of a system under development, covering the complete system with a level of detail that allows to define and understand its behavior and enables to define any interface and workpackage based on the model. Once such a model is established, further benefits can be reaped, such as the analysis o...

This paper covers the lessons learned on applying MBSE in the MOVE-II mission, with a focus on Assembly-Integration-Testing and Operations of the spacecraft. It shows the states of implementing MBSE across the various project phases. Furthermore, it shows the implementation of these lessons learned on the MOVE-III mission and what has been learned...

Presentation on the European Space Agency's MBSE2021 Workshop

In-situ measurements of sub-millimetre space debris and meteoroids can be acquired with different means and technologies, including impact detectors, opportunistic returns from space-exposed material, as well as photographic surveys. MOVE-III is a CubeSat project of the Department of Aerospace and Geodesy at the Technical University of Munich, desi...

Standardizing the interface between satellites and rockets lead to a sizeable rise in the number of launched and operational small satellites over the past two decades. By giving nsevere limits for the outer dimensions of satellites, the CubeSat Standard also brought a paradigm change in the development of satellite subsystems. As volume, available...

The main objective of the IRESA-project is the development and production of an actuator for space applications that is based on the shape memory technology. Apparent advantages, like a high force-to-mass-ratio, a compact design as well as a low power consumption predestine it for the usage in small satellites. Both generations of IRESA are designe...

CubeSats have been on the rise during the last decade and have the potential to substitute large, expensive satellites in many commercial and scientific applications. A reasonable commercial application of these standardized small satellites are Earth Observation constellations with medium spatial and high temporal resolution. The company Orbital O...

Due to their manifold application possibilities, shape memory alloys (SMA) become more and more common in all kinds of industrial tasks. For an operation in mass-manufactured products, it is inevitable to investigate the fundamental properties of the respective material and to perfect the fabrication process. A potential use of SMAs in aerospace is...

This article reports the ongoing work on an environment for hardware-in-the-loop (HIL) and software-in-the-loop (SIL) tests of CubeSats and the benefits gained from using such an environment for low-cost satellite development. The satellite tested for these reported efforts was the MOVE-II CubeSat, developed at the Technical University of Munich si...

In recent years, CubeSats proved to be valuable resources both for commercial and scientific purposes, leading to a significant technological development in terms of payloads and on-board instrumentation. The employment of more advanced technology usually implies a higher power consumption, and a consequently increased amount of waste heat. The typ...

The possibilities of a technical application of the shape memory effect are comprehensive and widespread. Besides the usage of arbitrary geometries, e.g. in the medical sector, especially wires are of great interest for unlocking mechanisms or other kinds of actuators. One of the challenges of the application of shape memory alloys (SMA) is the sma...

MOVE-II (Munich Orbital Verification Experiment) is the second satellite of the Technical University of Munich's educational CubeSat program. On December 3, 2018, the satellite was launched on the SSO-A SmallSat Express from the Vandenberg Air Force Base. The following paper shows on-orbit results of the first eight months of operations. It include...

Abstract—Over the past decade, the figures of merit of volume and mass for satellites have increased dramatically while the time to orbit decreased in the same manner. New applications based on small satellites are drivers in this new era where spacecraft development has to be both fast and reliable. Deployment and pointing mechanisms are one keyst...

Since their introduction in 1999, CubeSats emerged from a simple idea of standardizing small satellites to an accepted design baseline. More than 700 CubeSats have been launched so far, and many of them enabled students to work on real space hard-and software. Nowadays CubeSats are used not only for science and education purposes, but also in comme...

An extensive survey conducted recently revealed a gap of more than 23 % between how likely CubeSat developers believe their own mission to fail and how they see the general likelihood of a CubeSat mission to fail [2]. This gap shows that estimating the likelihood of mission success i.e. reliability, should be based on facts, not gut feeling. Still,...

MOVE-II (Munich Orbital Verification Experiment II) is a 1 Unit CubeSat currently under development at the Technical University of Munich (TUM). This paper reports on the technical as well as the organizational advancements of the project. With overall more than 130 students involved so far, the project is currently in Phase D, with the launch of t...

Changes due to design flaws impose major costs, delays and high risks on any spaceflight project. The later the change, the riskier and more expensive it is. System changes due to failures detected during spacecraft assembly are usually one of the last hardware flaws to be found and therefore impose major risks on the overall project. Traditionally...

Since its first description in literature, a variety of different system configurations for distillation over hydrophobic membranes have been invented. General advantages are the applicability at relatively low operation temperatures, low fouling potential, high product quality and the possibility to operate the system at very high feed concentrati...

Since its first description in literature, a variety of different system configurations for distillation over hydrophobic membranes have been invented. General advantages are the applicability at relatively low operation temperatures, low fouling potential, high product quality and the possibility to operate the system at very high feed concentrati...