Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-10-31
1991-05-21
Bentley, Stephen C.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
89 8, 124 3, 244 63, F41B 600
Patent
active
050175491
ABSTRACT:
An electromagnetic projectile launcher provides acceleration of a superconducting projectile through the diamagnetic repulsion of the superconducting projectile. A superconducting layer is provided aft of the projectile, either directly on the projectile or on a platform upon which the projectile is carried, and a travelling magnetic field is caused to propagate along a magnetic field drive coil in which the projectile is disposed. The resulting diamagnetic repulsion between the superconducting projectile and the travelling magnetic field causes the projectile to be propelled along the coil. In one embodiment, a segmented drive coil is used to generate the travelling magnetic field.
REFERENCES:
patent: 1020943 (1912-03-01), Bachelet
patent: 4432333 (1984-02-01), Kurherr
patent: 4939976 (1990-07-01), Minovitch
Bean et al., "Superconductors as Permanent Magnets", Journal of Applied Physics, vol. 33, No. 11, Nov. 1962, pp. 3334-3337.
Kolm et al., "Basic Principles of Coaxial Launch Technology", IEEE Transactions on Magnetics, vol. MAG-20, No. 2, Mar. 1984.
Mongeau, Peter, "Analysis of Helical Brush Commutation", IEEE Transactions on Magnetics, vol. MAG-20, No. 2, Mar. 1984.
Rose-Innes et al., Introduction to Superconductivity, 1969, pp. 20-22.
Peaslee, A. T., Proceedings of the Impact Fusion Workshop, LA-8000-C, Aug. 1979, pp. 8-12.
Bentley Stephen C.
Broad, Jr. Robert L.
Seemann Jerry L.
Sheehan William J.
The United States of America as represented by the Administrator
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