USA As Represented by Secretary of the Navy

Gerald W Chalmers

Joseph E Hibbs

Walter C Smith

Walter J Teixeira

Robert L Durrell

An improved arming-firing device that provides handling safety in a rocket otor. The arming-firing device provides pyrotechnic (out-of-line) and electrical (open and shortened initiator circuits) safety features wherein the arming-firing device is armed by rotating an assemblage of a mechanical rotor switch assembly, and solenoid wherein the solenoid aligns multiple cavities of the mechanical rotor with multiple prongs of a kinetic energy barrier assembly ad this action simultaneously electrically arms (closes circuits and removes shots) and mechanically enables the initiator whereupon receiving a firing signal fires and in turn ignites the ignitor of the rocket motor. The mating of the kinetic energy poppet-sleeve squib assembly's barrier prongs with the rotor cavities obviates rebounding, thus affording proper ignition. The mechanical barrier and a solenoid return spring prevents inadvertent firing from any cause.

Rocket motor arming-firing device FSU-12/B

An arming-firing device that provides handling safety in a rocket motor. arming-firing device provides pyrotechnic (out-of-line) and electrical (open circuit) safety features wherein the arming-firing device is armed by rotating a mechanical rotor by a solenoid that aligns multiple prongs of the barrier with multiple cavities of the rotor and this action simultaneously electrically arms (closes circuits) and mechanically enables the igniter whereupon receiving a firing signal starts the rocket motor. The mating of the barrier prongs with the rotor cavities obviates rebounding, thus affording proper ignition. The mechanical barrier and a solenoid return spring prevents inadvertent firing from any cause.

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Ridgecrest, CA, United States of America

Gerald W Chalmers