Accession Number : AD0432537


Title :   THE ANTICIPATORY EFFECT, A STUDY OF THE BURNING MECHANISM OF DELAY-RELAY COLUMNS


Descriptive Note : Technical rept.


Corporate Author : PICATINNY ARSENAL DOVER NJ FELTMAN RESEARCH LABS


Personal Author(s) : Gilford, Martin ; Werbel, Burton ; Weingarten, Garry ; Key, Lindbergh


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/432537.pdf


Report Date : Mar 1964


Pagination or Media Count : 40


Abstract : A newly recognized phenomenon termed the anticipatory effect is reported and its probable mechanism discussed. This effect occurs upon the burning of delay columns pressed above typical relay and flash charges and is reflected, in some systems, by more than a 40% diminution of burning time when no thermally sensitive terminal charge is present. An important mechanism operative in propagative columnar burning of pressed delay composition is the passage of hot gasses through pores of the column. These gases, reaction products of the burning delay composition in the upper portions of the column, evidently precede the flame front of the column and have been shown to ignite a terminally loaded relay charge at times shorter than would have been expected were the flame front alone the initiating source for the terminal charge. This effect has practical significance as it relates to end item performance. In this investigation the anticipatory effect was characterized for columns in which various delay and terminal charge compositions were used.


Descriptors :   *DELAY ELEMENTS(EXPLOSIVE) , BARIUM COMPOUNDS , BORON , BURNING RATE , CHROMATES , COMBUSTION , DELAY , END ITEMS , EXPLOSIVES INITIATORS , FLAMES , FLASHES , GASES , HEAT , HOT GASES , PERCHLORATES , PROBABILITY , REACTANTS(CHEMISTRY) , RELAYS , SENSITIVITY , SOURCES , TERMINAL GUIDANCE


Subject Categories : Ammunition and Explosives


Distribution Statement : APPROVED FOR PUBLIC RELEASE