Method of initiating a sequence of pyrotechnic events

Details Method of initiating a sequence of pyrotechnic events Method of initiating a sequence of pyrotechnic events

1988-07-11

1989-09-05

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Laser or light initiated

F42C 1900

Patent

active

048628026

ABSTRACT:
A pyrotechnic ignition method in which a semiconductor laser bar or bars containing a number of independent laser array sources deliver optical power in a specified sequence through optical fibers to a set of pyrotechnic elements in order to initiate a sequence of pyrotechnic events, such as a fireworks display, building demolition, emergency ejection sequence, satellite launch, etc. A command signal is transmitted and received, typically by a remote station from the user. The signal is decoded to generate a set of electrical signals representing addresses of individual laser arrays on the laser bar. The laser arrays are activated in the desired sequence in response to the set of electrical signals and emit laser light. This light is transmitted along optical fibers coupled to the individual laser arrays and terminating in pyrotechnic elements. The pyrotechnic elements are ignited in response to optical power received from the optical fibers, typically by direct heating of a detonator. The detonator may also be ignited photochemically or by electric current produced by a photoelectric sensor in response to sensing of the laser light.

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patent: 4730198 (1988-03-01), Brown et al.

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