Ordnance – Accelerating
Patent
1988-03-14
1989-08-22
Bentley, Stephen C.
Ordnance
Accelerating
102517, 102436, 124 3, 505903, F41F 102
Patent
active
048585114
ABSTRACT:
An electromagnetic railgun launcher and armature. The armature is made from superconducting material and is levitated between the rails of the launcher by the Meissner effect. The Meissner effect is created by cooling the armature and subjecting it to a magnetic field. The armature configuration has a closed loop topology and defines two planes - one plane coincides with the plane of the rails; the other plane is oblique to the first. The armature configuration, when placed between the rails receives an unbalanced Lorentz force which accelerates the armature.
REFERENCES:
patent: 3589300 (1971-06-01), Wipf
New York Times, Mar. 20, 87, "Discoveries Bring a `Woodstock` for Physics".
Electronics, Apr. 2, 87, "Superconductivity Drive Gets Hotter Every Day", . 49-51.
Physics Today, Apr. '87, "Superconductivity Seen Above The Boiling Point Of Nitrogen", pp. 17-23.
Physical Review Letters, pp. 1676-1679, Apr. 20, 1987, vol. 58, No. 16.
Physical Review Letters, pp. 2684-2686, 22 Jun. 1987, vol. 58, No. 25.
Longsworth et al., "Fast Cooldown J-T Refrigerators for IR Detectors" 4th International Cryocooler Conference, Sept. 1986, pp. 1-13.
Air Products product catalog 1980.
Bentley Stephen C.
Knab Ann M.
The United States of America as represented by the Secretary of
Zelenka Michael J.
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