• analysis
• otv
• orbital transfer vehicle
• space
• rocket
• chemical propulsion
• electric propulsion
• propulsion system
• trade-off

This master’s thesis presents a comprehensive investigation into advanced propulsion systems for the Rocket Factory Augsburg (RFA)’s 2nd Generation (Gen) Orbital Transfer Vehicles (OTVs). The aim of this research is to analyze and compare different propulsion configurations to determine the most suitable option for achieving efficient and cost-effective space missions. The study encompasses a wide range
of factors, including performance criteria, propellant choices, mission profiles, and technological advancements.
The research contains an in-depth review of existing electric propulsion technologies and their advantages in terms of high specific impulse and fuel efficiency. The thrustto-power ratio, propellant density, and ionization energy are analyzed to identify the optimal propellant selection for specific mission requirements.
A thorough investigation of various propulsion systems, such as chemical and electric thrusters, is conducted using rigorous criteria such as transfer time, mass payload expectation, and payload cost. These criteria, derived from market studies and data analysis, provide a comprehensive framework for evaluating and comparing different propulsion configurations.
The study also evaluates the impact of mission profiles on propulsion system selection. Detailed calculations and simulations are performed to estimate the ∆V requirements and transfer times for different missions, considering the limitations ofeach propulsion system.
Based on the analysis of the collected data and simulations, two distinct propulsion configurations are recommended for the future RFA’s 2nd Gen OTV. The first configuration utilizes a chemical propulsion system for the OTV, while the second configuration incorporates an electric propulsion system in addition to the chemical thruster. The choice of configuration depends on mission requirements, with the combined configuration proving advantageous for the missions.