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High-acceleration mass driversHigh-acceleration mass drivers are discussed including the MD2 model of axial geometry, with individually powered drive coils of 13.1 cm diameter. Timing is derived through the interruption of light beams by the moving armature (bucket). Electric power is provided by the resonant discharge of sector capacitor banks through silicon-controlled rectifiers in a two-phase, quadrature circuit. The bucket flies in vacuum, guided by passive dynamic eddy-current magnetic forces, those currents flowing in strip conductors lining the inside of a nonconducting vacuum pipe. Quantitative measurements are obtained with a solid bucket carrying two superconducting coils with a current density of 25 kA/sq cm. A cryogenic station for cooling the bucket to liquid helium temperature is connected to the vacuum pipe.
Document ID
19790069292
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Oneill, G. K.
(Princeton University Princeton, N.J., United States)
Kolm, H. H.
(MIT Cambridge, Mass., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1979
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
IAF PAPER 79-118
Accession Number
79A53305
Funding Number(s)
CONTRACT_GRANT: NSG-3176
Distribution Limits
Public
Copyright
Other

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