A 150 kJ test facility with a 15 mm round bore was used to study the effects of different kinds of armatures and armature materials on the projectile velocity. The investigated parameters include armature mass, electrical resistance, rail erosion and current shape. The authors found out that the rail erosion can be lowered by using hybrid or transitioning armatures instead of plasma armatures and the phenomenon is going to be discussed. They show that the measured projectile velocity is greater than the one theoretically estimated taking only the magnetic forces into account and the fact is explained. They also show that the velocity may be enhanced by the choice of an adequate armature type.


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    Title :

    Study of the Propelling Forces in Rail Launchers


    Contributors:
    H. Peter (author) / P. Lehmann (author) / F. Jamet (author) / V. Wegner (author)

    Publication date :

    1991


    Size :

    14 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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