Saumya Shekhar

TU Darmstadt, Germany

Abstract Title:Bio-Based Ethanol Propellants for Upper-Stage Rockets

Biography:

Saumya Shekhar is a Master's student in Aerospace Engineering at Technische Universität Darmstadt, focusing on propulsion systems and mission planning. He has handled technological initiatives and presented research at international conferences, having previously designed high-performance rockets and autonomous space debris solutions. Saumya is passionate about space exploration and innovation, and she combines technical competence with project management abilities to help progress the aerospace sector.

Research Interest:

This study investigates the potential of bio-based propellants, particularly ethanol, for use in upper stage rocket systems, where optimized performance and reduced emissions are essential. As the space industry pivots toward greener technologies, replacing toxic propellants with sustainable alternatives is crucial to address environmental concerns and meet new legislative requirements. Ethanol emerges as a promising candidate due to its versatility and benign properties. Utilizing NASA CEA software alongside Julia/python for advanced modeling, we conducted a comprehensive analysis of ethanol with various oxidizers, including nitrous oxide and liquid oxygen, across different upper-stage engine configurations. This analysis encompasses key performance parameters such as thrust and specific impulse, as well as detailed emission profiles to assess environmental impact. Our approach involves optimizing propellant combinations, adjusting area ratios, and manipulating chamber pressures to meet the specific demands of upper-stage applications. Emphasis is placed on minimizing the need for cryogenic propellants while promoting bio-based emissions. This combined performance and emissions analysis not only aims to improve propulsion efficiency but also seeks to reduce costs associated with hazardous gas generation, storage, and venting. By advancing bio-based upper-stage rocket systems, we support a more sustainable and economically viable path for future space exploration.