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Electromagnetic Gun With Commutated CoilsProposed electromagnetic gun includes electromagnet coil, turns of which commutated in sequence along barrel. Electrical current fed to two armatures by brushes sliding on bus bars in barrel. Interaction between armature currents and magnetic field from coil produces force accelerating armature, which in turn, pushes on projectile. Commutation scheme chosen so magnetic field approximately coincides and moves with cylindrical region defined by armatures. Scheme has disadvantage of complexity, but in return, enables designer to increase driving magnetic field without increasing armature current. Attainable muzzle velocity increased substantially.
Document ID
19910000132
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Elliott, David G.
(Caltech)
Date Acquired
August 14, 2013
Publication Date
April 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 4
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
NPO-17839
Accession Number
91B10132
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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