Development of a 32 Inch Diameter Levitated Ducted Fan Conceptual Design
Development of a 32 Inch Diameter Levitated Ducted Fan Conceptual Design
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开发 32 英寸直径悬浮涵道风扇概念设计
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Daniel R. Vrnak
中科院分区：
文献类型：
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作者：
D. Eichenberg;C. Gallo;Paul A. Solano;W. K. Thompson;Daniel R. Vrnak
美国宇航局的约翰·H.格伦研究中心开发了一种革命性的32英寸。直径悬浮涵道风扇（LDF）概念设计。这项工作的目的是开发一种可行的非接触式推进系统，利用海尔贝克阵列的全电动飞行，和许多其他应用。这一概念将有助于减少有害排放，减少国家对化石燃料的依赖，并减轻传统飞机推进器遇到的许多问题和限制。物理布局包括一个涵道风扇鼓转子，叶片连接在外径处，并由内径处的应力调谐器环支撑。转子包含在定子内。该概念利用独特的物理尺寸和大的可用表面积来优化定制的集成电磁系统，该系统提供悬浮和推进功能。转子由转子和定子之间的调制电磁场驱动。当设置为运动时，时变磁场与定子组件中的无源线圈相互作用，以在定子和转子之间产生排斥力，从而提供磁悬浮。LDF可以显著提高航空效率，可靠性和安全性，并在超高效电机，计算机和空间电源系统中具有潜在的应用。
The NASA John H. Glenn Research Center has developed a revolutionary 32 in. diameter Levitated Ducted Fan (LDF) conceptual design. The objective of this work is to develop a viable non-contact propulsion system utilizing Halbach arrays for all-electric flight, and many other applications. This concept will help to reduce harmful emissions, reduce the Nation s dependence on fossil fuels, and mitigate many of the concerns and limitations encountered in conventional aircraft propulsors. The physical layout consists of a ducted fan drum rotor with blades attached at the outer diameter and supported by a stress tuner ring at the inner diameter. The rotor is contained within a stator. This concept exploits the unique physical dimensions and large available surface area to optimize a custom, integrated, electromagnetic system that provides both the levitation and propulsion functions. The rotor is driven by modulated electromagnetic fields between the rotor and the stator. When set in motion, the time varying magnetic fields interact with passive coils in the stator assembly to produce repulsive forces between the stator and the rotor providing magnetic suspension. LDF can provide significant improvements in aviation efficiency, reliability, and safety, and has potential application in ultra-efficient motors, computers, and space power systems.