Squib-actuated disconnect device
Piston-operated device retains gases released by explosive squibs during stage separation of a spacecraft.
Davis, D. P.↗
Engineering topics
Davis, D. P.
Publications and source records attributed to Davis, D. P..
Initiation system for low thrust motor igniter
A test program was carried out to demonstrate an igniter motor initiation system utilizing the bimetallic material Pyrofuze for a solid propellant rocket with controlled low rate of thrust buildup. The program consisted of a series of vacuum ignition tests using a slab burning window motor that simulated the principal initial ballistic parameters of the full scale igniter motor. A Pyrofuze/pyrotechnic igniter system was demonstrated that uses a relatively low electrical current level for initiation and that eliminates the necessity of a pyrotechnic squib, with its accompanying accidental firing hazards and the typical basket of pyrotechnic pellets. The Pyrofuze ignition system does require an initial constraining of the igniter motor nozzle flow, and at the low initiating electrical current level the ignition delay time of this system was found to be quite sensitive to factors affecting local heat generation or loss rates.
Strand, L. D.↗
Umbilical disconnect actuator
Contamination of sensitive equipment when squibs are fired is prevented by O-rings which retain the debris of squib discharge within the disconnect device.
Davis, D. P.↗
Mariner Mars 1971 spacecraft destruct unit
Shaped charge destruct unit for Mariner Mars 1971 spacecraft
Davis, D. P.↗