Research on Overall Conceptual Design and Multiphysics Coupling Characteristics of All-Electric Turbofan Engines

To address the aviation industry's carbon neutrality challenges, this study proposes an innovative architecture for an all-electric turbofan engine, replacing traditional thermodynamic cycles with an electric propulsion system to achieve zero carbon emissions. Through multidisciplinary optimization, the design integrates high-power-density superconducting motors, distributed fan modules, and intelligent thermal management systems, overcoming energy conversion efficiency bottlenecks. Numerical simulations and experimental validations demonstrate that the engine achieves 85% thrust efficiency under cruising conditions, with noise reduction exceeding 20 dB. Furthermore, an adaptive control strategy enables dynamic thrust vector adjustment. Key breakthroughs include: Lightweight composite fan blades with optimized bypass ratios up to 18; Silicon carbide-based power electronics reducing power consumption by 15%; Phase-change cooling systems maintaining superconducting motor temperatures at 20 K. Under a 30 kN thrust class, the system achieves 42% thermal efficiency, reducing fuel consumption by 35% compared to conventional turbofans. This research provides a viable technical pathway for electrifying Urban Air Mobility (UAM) and regional aviation.