Martin Seider
I live in Mexico where I work as a group leader for an automotive supplier. The last 2 years in Mexico have taught me how important a network is for the professional path, how important the team is and what role tolerance plays in each other. I learned that from mentors, from failures and setbacks, but above all because life in Mexico is much shorter lived, more chaotic and extreme. I am eternally grateful for what I have learned, but I must always encourage myself and overcome the difficult path.
Meanwhile, the birth of my second child is imminent and I was faced with the decision to go back to Germany or stay in Mexico. I decided to stay in Mexico without knowing exactly what the future holds but with the prospect of an exciting, successful and fulfilling future.
I am indebted to many people for being able to follow the path I have taken, but above all to the Reissner Foundation. The scholarship gave me the opportunity to study in France and get excited about foreign countries. My enthusiasm for foreign countries has now taken me to France, Mexico and Italy, Switzerland and the USA.
Finally, I call all young people to gain experience abroad and not always the easy way to go.
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Tilman Binder – Scramspace
In a nutshell, it’s about new drives for space transport: In a later version of the quite advanced “SCRAMSPACE 1” upper stage, the air-breathing supersonic drive is to be combined synergistically with a conventional rocket drive for the final ascent phase. My work consists of preparatory groundwork and first computer simulations on the flow path of incoming air and combustion gases within the missile.
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Ramin Geshnizjani
The diploma thesis deals with precision attitude control systems for future science satellites such as Euclid, which in addition to high agility requirements have to have an unprecedented alignment accuracy. Robust stability and robust performance are important, meaning that the satellite must be able to be aligned with high precision even if certain characteristics of the satellite are subject to uncertainties. For example, the moment of inertia of a satellite, which is a decisive variable for the rotational movement, varies due to fuel sloshing.
A satellite control system typically consists of several control loops, which are specially designed for the requirements of the respective mission phases. A sudden switch between the different controllers will cause alignment errors that exceed preset limits. Therefore, the switching should be realized in the form of a cross-fade, ie while one controller is slowly “shut down”, the next controller is “started up”.
My job is to investigate this time-varying switch to robust stability to make sure that the satellite does not get out of hand during this switchover.
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