항공용 하이브리드엔진 개발을 위한 프로펠러 구동원 차이에 따른 소음 및 추력 특성 비교 연구 = The Comparative Study of Noise and Thrust Characteristics According to Propeller Drive Sources for the Development of Hybrid Engines in Aviation

다국어 초록 (Multilingual Abstract)

This study investigates hybrid propulsion for UAM & AAM as demand shifts toward short-range urban and suburban mobility enabled by advances in lightweight aircraft technologies. Urban low-altitude operations with frequent takeoffs and landings under stricter noise regulations require both high propulsion efficiency and low acoustic emissions. While electric propulsion provides precise controllability and low vibration, limitations in battery energy density and charging infrastructure constrain range, endurance, and turnaround. Hybrid propulsion can mitigate these constraints by combining the high energy density of fuel with the motor’s low-noise, fast-response operation. Accordingly, this study quantitatively compares thrust performance and noise spectra of an identical propeller when driven by an electric motor versus an internal combustion engine, providing baseline evidence to support hybrid propulsion system design.