Accession Number : ADD005124

Title :   Gun Projectile Sensor.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Heiney,Otto K

Report Date : 06 Apr 1978

Pagination or Media Count : 9

Abstract : The magnetic field established by a current carrying coil of wire is altered, or modified, by the passage through it of a metallic (electrically conductive) projectile. This change in the magnetic field is sensed by another coil concentrically wound with the field establishing coil. A single dual coil assembly is used to determine burst fire rates, two dual coil assemblies, a determined distance apart, provide time interval pulses representative of projectile velocity. A conventional chronograph or conventional electronic counter providing an output indication of events per unit of time and time interval durations is used to provide a read out indication of projectile bursts rates and velocity measurements. (Author)

Descriptors :   *Patent applications, *Firing rates, *Magnetic detectors, *Time interval counters, Projectiles, Guns, Velocity, Measurement

Subject Categories : Guns

Distribution Statement : APPROVED FOR PUBLIC RELEASE