Turns-to-arm sensor

Details Turns-to-arm sensor Turns-to-arm sensor

1988-04-04

1989-07-18

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Arming devices

F42C 1540

Patent

active

048482340

ABSTRACT:
A turns-to-arm sensor which uses a piezoelectric crystal to produce a current flow dependent upon the spin rate of a projectile. An output voltage is produced across a diode, from said current, which is proportional to the square root of the voltage at the crystal. The output voltage is approximately equal to the angular velocity of the projectile and is converted to frequency. The frequency determines the rate at which a preset counter operates. At time-out of the counter an arming signal is sent.

REFERENCES:
patent: 3192412 (1965-06-01), Stewart et al.
patent: 3750583 (1973-08-01), White et al.
patent: 3853062 (1974-12-01), Cole

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