Accession Number : AD0784066

Title :   Development of a Safer Intermediate and First Fire Formulation for the M49A1 Surface, Trip Flare.

Descriptive Note : Technical rept.,


Personal Author(s) : Carrazza,James A. ; Kaye,Seymour M. ; Taylor,Francis R.

Report Date : JUL 1974

Pagination or Media Count : 43

Abstract : Markedly safer intermediate and first fire ignition charges were developed for the M49A1 surface, trip, flare. Both the present intermediate and first-fire formulations are sensitive to impact, frictional, and electrostatic initiation. A laboratory study was conducted to develop a substitute formulation closely matching the pressure-time profile and generated gas volume of the presently used compositions, but having significantly less sensitivity. A new formulation containing 65/24/10/1 tungsten/barium chromate/potassium perchlorate/vinyl alcohol acetate resin (VARR) met these criteria and was demonstrated to be an efficacious substitute for both the older intermediate and first-fire compositions. The new formulation was designated as DP-1886. In addition to the safety factor provided by this change, a reduction of inventory and processing costs will be realized through the use of one formulation for the two different ones currently employed. (Modified author abstract)

Descriptors :   *Flares, *Ignition, *Illuminating projectiles, Explosives initiators, Primers, Sensitivity, Electrostatics, Impact, Friction, Tungsten, Formulations, Safety, Reliability, Loading(Handling), Costs

Subject Categories : Pyrotechnics

Distribution Statement : APPROVED FOR PUBLIC RELEASE