Apparatus for setting a projectile time fuze

Details Apparatus for setting a projectile time fuze Apparatus for setting a projectile time fuze

1989-09-08

1990-09-11

Brown, David H.

Ordnance

Fuse setters

Combined with projecting, launching or releasing devices

F42C 1700

Patent

active

049552791

ABSTRACT:
An apparatus for setting a time fuse in a projectile, with the muzzle velocity of the projectile being measured and its delay being corrected by the value measured for the muzzle velocity. To determine the muzzle velocity of the projectile, the latter is provided with a magnetic field sensor and the gun barrel is provided with two magnetic axially spaced field generators adjacent its muzzle. The magnetic field sensor is connected, via an amplifier, to a start/stop counter which starts counting clock pulses when the projectile flies past a first of the magnetic field generators and stops counting clock pulses when the projectile flies past the other of the two magnetic field generators to provide a final count which is a measure of the projectile muzzle velocity. The final count of the start/stop counter is then used to adjust the counter clock pulse frequency which is then used by further circuitry, e.g. a preset backward counter, to provide the delay for the fuze.

REFERENCES:
patent: 4022102 (1977-05-01), Ettel
patent: 4080869 (1978-03-01), Karayannis
patent: 4283989 (1981-08-01), Toulios et al.
patent: 4649796 (1987-03-01), Schmidt
patent: 4664013 (1987-05-01), Wegner et al.
patent: 4862785 (1989-09-01), Ettel et al.
Erich Pehl, Mikrowellentechnik, (Dr. Alfred Huthig Verlag Heidelberg), vol. 1, pp. 188-189.

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