Accession Number : ADA293974

Title :   Flamespreading Processes in Ball Powder Propellants.

Descriptive Note : Final rept. Jan-Nov 90,

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Brant, Andrew L. ; Colburn, Joseph W. ; Ruth, Carl R. ; Worthington, Dennis W.

PDF Url : ADA293974

Report Date : APR 1995

Pagination or Media Count : 40

Abstract : Ball powder propellants, loose and compacted, have been considered for use in recent years in tank and artillery applications. They are on interest due to the potential for high loading density, reduced temperature sensitivity, and improved performance through chemical/geometric progressivity control. However, there are several areas of concern, among them an uncontrolled deconsolidation process of compacted ball powder and a reduction in performance if the deterrent location is varied from the optimum. In order to address these concerns, a study was conducted by the U.S. Army Ballistic Research Laboratory and Olin Corporation to investigate the initial phase of the ballistic cycle with a 120-mm simulator. The simulator, employing a disposal plexiglass chamber, allowed direct viewing of the events occurring during the ignition and flamespreading portion of the interior ballistic cycle via high-speed cinematography. Pressures were measured at the ends and interior of the chamber with gages mounted in the case base, projectile fins, and projectile base. Shots were conducted with loose and compacted ball powder charges at several temperatures. jg

Descriptors :   *FLAMES, *BALL POWDER PROPELLANTS, SIMULATION, POSITION(LOCATION), TEMPERATURE, PROJECTILES, SENSITIVITY, CYCLES, REDUCTION, COMBUSTION, INTERNAL, CHEMICAL REACTIONS, HIGH DENSITY, IGNITION, DISPOSAL, BALLISTICS, CHAMBERS, ARTILLERY, TANKS(COMBAT VEHICLES), FINS, DETERRENCE, INTERIOR BALLISTICS, HIGH SPEED CAMERAS, CINEMATOGRAPHY, PLEXIGLAS.

Subject Categories : Ammunition and Explosives
      Physical Chemistry
      Logistics, Military Facilities and Supplies
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE