Addendum to High Pressure Burn Rate Measurements on an Ammonium Perchlorate Propellant

Glascoe, E A ; Tan, N

关键词: ALUMINIUM;    AMMONIUM PERCHLORATES;    BURNERS;    LAWRENCE LIVERMORE NATIONAL LABORATORY;    PRESSURE RANGE;   

DOI  :  10.2172/1016297
RP-ID  :  LLNL-TR-461913
PID  :  OSTI ID: 1016297
Others  :  TRN: US201112%%396

学科分类：化学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

As part of a small follow-on study, the burn rate of the ammonium perchlorate (AP) based material TAL-1503 was studied at a relatively mild pressure. The goal of this final experiment was to burn TAL-1503 at the lowest pressures possible using the LLNL High Pressure Strand Burner (LLNL-HPSB). The following is a description of the experiment and the results with a brief discussion of data and a comparison to the higher pressure data. This is not meant to be a stand-alone report and readers should refer to the main report for experimental details and discussion. High pressure deflagration rate measurements of a unique AP/HTPB based material (TAL-1503) were performed using the LLNL high pressure strand burner apparatus. The material burns in a well behaved, laminar fashion between 20 and 300 MPa with a burn law of B = (0.6 {+-} 0.1) x P{sup (1.05{+-}0.02)} that was calculated based on the best data available from the experiments. In the pressure range of 2 and 10 MPa the material burned laminarly with a burn law of B = (2.0 {+-} 0.2) x P{sup (0.66{+-}0.05)}. In these results, B is the burn rate in mm/s and P is the pressure in units of MPa. Comparison of the TAL-1503 results with similar propellants that contain micrometer sized aluminum indicate that the burn rates are relatively unaffected by the aluminum. However, the pressure change is significantly larger when aluminum is present, most likely due to the high temperatures achieved from burning aluminum.