THE EFFECTS OF PROCESSING ON PYROTECHNIC COMPOSITIONS. PART III: DIMENSIONAL EFFECTS OF PAPER CASES ON ILLUMINANCE AND BURNING RATE OF FLARE COMPOSITIONS.
Abstract
A study was conducted to evaluate the effects of changes in the dimensions of the paper cases on the burning rate and illuminance characteristics of flares. Magnesium/ sodium nitrate/vinyl alcohol acetate resin flares of compositions containing magnesium of three different mesh sizes were blended and loaded into paper cases having two internal diameters and three wall thicknesses. The flares were tested using a photocell-recorder combinationnd a light integrator which records luminous intensity as a function of burning time. In addition, motion pictures were taken of each test, at 24 frames per second. The luminosity and photographic results revealed that the paper cases were shielding the light radiation of the small diameter (0.62 inch ID) flares, the thick-walled items being affected more than the thin. This obscuration of light was shown more significantly by the coarse (30/50 mesh) magnesium system. The burning rate data for the small diameter cases and both the illuminance and burning rate data for the large diameter (1.33 inch ID) cases showed no variation which could be attributed to the difference in case thickness. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1966
- Accession Number
- AD0626170
Entities
People
- Doris E. Middlebrooks
- Gary Weingarten
- Seymour M. Kaye
Organizations
- Picatinny Arsenal