Armature with graded laminations

Details Armature with graded laminations Armature with graded laminations

1981-11-25

1984-02-14

Cangialosi, Sal

Ordnance

Accelerating

124 3, F41F 102

Patent

active

044309210

ABSTRACT:
The conductivity of the laminations in an armature which conducts current between the launcher rails or switch rails of an electromagnetic propulsion system is graded such that uniform current density is achieved in each lamination. The conductivity of each lamination, which increases from the breech end to the muzzle end of the armature, is related to that of the lamination at the breech end by a single proportionality factor which is a function of the length of the armature in the direction of armature travel, the half-width of the gap between the rails, the velocity of the armature, the magnetic permeability of the rails, and the conductivity of the breech laminations and of the rails.

REFERENCES:
patent: 4343223 (1982-08-01), Hawke et al.
patent: 4347463 (1982-08-01), Kemeny et al.
patent: 4355561 (1982-10-01), Kemeny et al.
patent: 4369691 (1983-01-01), Baehr, Jr. et al.
patent: 4369692 (1983-01-01), Kemeny
"Megagauss Physics and Technology", Plenum Press, N.Y. (6/1/79), pp. 292-294, John Barber.

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