Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1992-04-20
1993-01-26
Bentley, Stephen C.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
73 12, 89 8, 124 3, 505870, F41B 600
Patent
active
051822547
ABSTRACT:
A pair of copper rails on which a projectile is mounted forms an electrometic rail gun. One end of the rails is connected across an electrical coil which resides between a pair of Helmholtz coils made of a high temperature superconducting material. The Helmholtz coils are normally held in a superconducting state and carry large currents without the need of a voltage source. A thermal quencher is provided which is capable of removing the superconducting state by heating the superconducting circuit. When the temperature of the superconducting circuit rises above its critical temperature, the resistance of the wires will increase, causing the current to collapse. This sharp collapse of the current will cause a correspondingly sharp collapse of the magnetic field of the Helmholtz coils, thereby inducing a sharp current pulse in the force coil which produces a high-energy electric power pulse on the rails to launch the projectile. A magnetic quencher may be used in place of the thermal quencher. As an alternate embodiment a power cryotron is used to switch a superconducting circuit into a high-resistance state to dump the current pulse onto the rails.
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Bentley Stephen C.
Goldberg Edward
Lane Anthony T.
Sachs Michael C.
The United States of America as represented by the Secretary of
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