Accession Number : AD0856251

Title :   Boron Ignition Limit Curve as Determined by a Shock Tube Study.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Jones, James T.

Report Date : JUN 1969

Pagination or Media Count : 52

Abstract : A shock tube was employed to establish ignition limit curves for two particle sizes of boron. The particles were ignited in air by the temperature rise behind the reflected shock wave. Results show that the ignition temperature for .015 micron particles increases linearly with pressure from 1130 K at 6 atm to 1170 K at 130 atm. For 30-50 micron agglomerated particles (1-2 micron primary size) the ignition temperature decreases initially to 1390 K at 20 atm but then increases linearly to 1420 K at 130 atm. In addition, preliminary information was obtained on ignition delay time for both particles. (Author)

Descriptors :   (*SUPERSONIC COMBUSTION RAMJET ENGINES, SLURRY FUELS), (*BORON, IGNITION), COMBUSTION, PARTICLE SIZE, BURNING RATE, IGNITION LAG, SHOCK TUBES, TEMPERATURE, THESES.

Subject Categories : Combustion and Ignition
      Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE