The reduction of emission is a key goals for the aviation industry. One enabling technology to achieve this goal, could be the transition from conventional gas turbines to hybrid-electric drive trains. However, the requirements concerning weight and efficiency that come from applications like short range aircraft are significantly higher than what state-of-the-art technology can offer. A key technology that potentially allows to achieve the necessary power and volume densities for rotating electric machines is superconductivity. In this paper we present the concept of a high power density generator that matches the speed of typical airborne turbines in its power class. The design is based on studies that cover topology selection and further electromagnetic, HTS, thermal, structural and cryogenics aspects. All domains were analyzed by means of analytical sizing and 2D/3D FEA modeling. With the help of our digital twin that is a synthesis of these models, we can demonstrate for the first time that under realistic assumptions on material properties gravimetric power densities beyond 20 kW kg⁻¹ can be achieved.

减少排放是航空业的主要目标。实现这一目标的一项可行技术可能是从传统的燃气轮机过渡到混合动力传动系统。但是，诸如短程飞机之类的应用对重量和效率的要求大大高于最先进的技术所能提供的。超导电性是潜在地实现旋转电机所需功率和体积密度的一项关键技术。在本文中，我们提出了一种高功率密度发生器的概念，该功率发生器在其功率等级上与典型机载涡轮的速度相匹配。该设计基于涵盖拓扑选择以及电磁，高温超导，热，结构和低温方面的研究。通过分析大小和2D / 3D FEA建模来分析所有领域。借助我们的数字孪生模型（这些模型的综合），我们可以首次证明在现实的材料性能假设下，重量功率密度超过20 kW kg^-1可以实现。