Accession Number : AD0438910


Title :   Pyrotechnic Delay Devices for Low Energy Detonating Cord Systems


Corporate Author : FRANKFORD ARSENAL PHILADELPHIA PA


Personal Author(s) : Kowalick, J F


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/438910.pdf


Report Date : Apr 1964


Pagination or Media Count : 32


Abstract : A study was initiated to survey the field of pyrotechnic delay devices as such devices pertain to systems where relatively low energy transfer is accomplished through detonating cord having a core of small amounts of high explosive. Detonating fuse delays developed for use in the blasting industry incorporate power trains of the sequence - high explosive, to deflagrating composition, to delay composition. Although such delays appear to be in common use, their delay times do not exceed approximately 300 milliseconds and their reliability has not been established. Furthermore, a design problem may exist in scaling up the delay time to the order of several seconds. Functional descriptions of these delays are presented. A method is presented for providing a complete seal between detonating cord and the delay device. References cited, although not all-inclusive, are indicative of current and past interest in this subject. (Author)


Descriptors :   *DETONATIONS , *DETONATING CORD , ENERGY TRANSFER , IMPACT SHOCK , AVIATION SAFETY , HIGH EXPLOSIVES , PYROTECHNICS , EXPLOSIVE TRAINS , EXPLOSIVE ACTUATORS , TIME DELAY FUZES


Subject Categories : Ammunition and Explosives


Distribution Statement : APPROVED FOR PUBLIC RELEASE