Lift and drag forces are compared for various null and normal flux superconducting magnet configurations where each coil consists of a pair of infinitely long parallel wires separated by a fixed distance. The nullflux configuration has a minimum in the drag to lift ratio for a particular value of I 2/W (I = magnet current, W = vehicle weight) when the vehicle cruises freely at constant speed. This calculation takes into account losses due to non-uniform eddy-current density distribution in the solid track. Results indicate that the null-flux configuration is the most efficient design, followed by the normal-flux, single track configuration. All other schemes are less efficient for a thin track configuration. A general method is outlined for calculating the zero-torque case.


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    Title :

    Comparison and optimization of lift and drag forces on vehicles levitated by eddy current repulsion for various null and normal flux magnets with one or two tracks


    Additional title:

    Durchfuehrung eines Vergleiches und einer Optimierung von Anheb- und Zugkraeften, die auf Fahrzeuge wirken, die durch Wirbelstromabstossung schweben, fuer verschiedene Magnete mit Null- und Normalfluss unter Einbeziehung von Einspur- und Zweispursystemen


    Contributors:
    Hogan, J.R. (author) / Fink, H.J. (author)

    Published in:

    Publication date :

    1975


    Size :

    4 Seiten, 2 Bilder, 1 Tabelle, 12 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English