RT Journal Article ID 54bdbef2151d1c09 A1 Eckl, Wilhelm A1 Eisenreich, Norbert A1 Liehmann, W. A1 Menke, K. A1 Rohe, Th. A1 Weiser, Volker T1 COMBUSTION PHENOMENA OF BORON CONTAINING PROPELLANTS JF International Journal of Energetic Materials and Chemical Propulsion JO IJEMCP YR 1997 FD 1997-01-01 VO 4 IS 1-6 SP 896 OP 905 AB The combustion of boron containing propellants, based on AP/GAP and AP/HMX/GAP formulations, have been investigated by applying fast spectroscopic, pyrometric and photographic techniques. The propellants burn at a rate of 17mm/s at 5 MPa. Addition of an iron oxide catalyst increased the rate to 20 mm/s at the same pressure. The determined average pressure exponents are 0.66 without and 0.57 with iron oxide as catalyst. At pressures higher than 5 MPa, a strong decrease in the exponent is observed. The reaction zones show high particle concentrations with temperatures from 1500 to 2000 K, varying with the nitrogen pressure. Reacting with air, the particle temperatures increase close to the evaporation temperature (2200 K) of boron oxide. The reaction of boron with oxygen is proved by the results of spectroscopic data. Considering an application in a ducted rocket, the boron is heated to the desired reaction temperature. PB Begell House LK https://www.dl.begellhouse.com/journals/17bbb47e377ce023,43cb1df7484a24f3,54bdbef2151d1c09.html