Session: 03-04 Advancements in Turboprop and Turboshaft Engine Technologies

Paper Number: 152438

Study of Hybridization Level for Propulsion System in Multi-Megawatt Turboprop Aircraft 

This paper presents a comprehensive approach to the sizing of parallel hybrid propulsion systems for multi-megawatt aircraft, with a specific focus on baseline turboprop aircraft. By exploring key performance variables such as power distribution, system efficiency, or fuels and aircraft weights, the research also considers possible variations in external conditions, manufacturing technologies, and long-term environmental impacts. The study provides a detailed analysis of how these factors influence overall hybrid aircraft performance. Special attention is given to the impact of these variables on range and fuel consumption, aiming to quantify potential fuel savings and range improvements under different operating conditions. In particular, the study explores how adjustments in power management and fuel distribution can affect the overall mission efficiency. Additionally, the role of alternative fuel sources is examined for further optimization. The paper investigates the level of hybridization at various phases of flight, such as takeoff, climb, cruise, and descent, seeking to optimize the distribution of power between the electric power train (fuel cell sizing) and gas turbine propulsion systems. By evaluating different scenarios and performance sensitivities, the study aims to identify optimal design strategies for enhancing both efficiency and sustainability in future aircraft propulsion systems. The findings contribute to a better understanding of how hybrid-electric technologies can be integrated into next-generation turboprop aircraft, with implications for reducing emissions and quantifying the impact on top-level aircraft requirements.

Presenting Author: Michael Valášek CTU in Prague

Presenting Author Biography: Jan Pařez is an R&D Engineer specializing on aircraft engines, heat transfer, and engine performance modeling. He is currently finishing a Ph.D. in Applied Sciences in Mechanical Engineering at the Czech Technical University in Prague, researching the impact of non-stationary temperature fields on aircraft engine safety. Jan has extensive experience in the practical aspects of aviation, he working on turboprop engines tests and certification missions, digital engine twins and performance modelling. He is also a private pilot and member of the Czech national navigation flying team. He is also a board member of the European federation for Small aviation (Sport Flying Devices) up to 600kg MTOM.

Authors:

Jan Pařez CTU in Prague
Patrik Kovář CTU in Prague
Michael Valášek CTU in Prague