Ordnance – Accelerating
Patent
1982-08-02
1989-06-06
Brown, David H.
Ordnance
Accelerating
124 3, 310 13, 310112, 310114, 310162, 310184, F41F 102, H02K 1600, H02K 1916
Patent
active
048360830
ABSTRACT:
An alternator for repetitive pulsing of an electromagnetic projectile launcher is provided with a stator structure having at least one pair of single layer concentric coil portions which are electrically connected in parallel. A rotating magnetic field induces a voltage in these coil portions without producing circulating currents. The alternator is connected through a switch to a pair of genrally parallel conductive projectile launching rails and a sliding conductive armature between the rails. By causing the switch to conduct at a predetermined phase angle, the voltage across the launching rails can be reduced to zero as the projectile leaves the rails. Where a succession of projectiles is to be fired, the phase angle at which the switch begins to conduct is controlled in order to achieve a substantially constant muzzle velocity for each projectile while minimizing the rail voltage as each projectile exits the rails.
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Brown David H.
Griffiths John E.
Lenart R. P.
Westinghouse Electric Corp.
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