Accession Number : ADA277904

Title :   Trends Observed in the Laser Ignition of Blackpowder and JA2 Propellant.

Descriptive Note : Final rept. Jun 91-Jan 92,

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Forch, Brad E. ; Barrows, Austin W. ; Beyer, Richard A. ; Newberry, Joyce E. ; O'Reilly, John J.

Report Date : MAR 1994

Pagination or Media Count : 40

Abstract : Radiative ignition of energetic materials such as solid propellants and blackpowder have been investigated using a variable pulse width, high-energy Nd:glass laser. Quantitative measurement of the relationships between laser energy,laser pulse duration, and percent surface irradiation on ignition delay and ignition threshold have been made. The effect of molecular oxygen concentration on ignition threshold in solid propellant initiation has also been determined. A two-color laser ignition method for solid propellant ignition using infrared (IR) surface pyrolysis and gas phase ultraviolet (UV) photolysis and multiphoton is examined

Descriptors :   *IGNITION SYSTEMS, *LASER APPLICATIONS, *HIGH ENERGY LASERS, *SOLID PROPELLANTS, *BLACK POWDER, PYROLYSIS, PHOTOLYSIS, NEODYMIUM LASERS, GLASS LASERS.

Subject Categories : Ammunition and Explosives
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE