RT Journal Article ID 43aaca8f5bda96c0 A1 Togo, Sumito A1 Kobayashi, Kiyokazu A1 Shimada, Toru A1 Niimi, Yasushi A1 Seike, Yoshio A1 Nishioka, Makihito A1 Hori, Keiichi T1 MODIFIED BURNING RATE SPECTRUM & COMBUSTION MECHANISM OFTETRA-OLGAP JF International Journal of Energetic Materials and Chemical Propulsion JO IJEMCP YR 2007 FD 2007-03-01 VO 6 IS 2 SP 153 OP 169 K1 GAP K1 burning rate K1 firing test K1 C* efficiency K1 combustion model AB Attempts were made to extend the burning rate spectrum of glycidyl azide polymer (GAP) towards both upper and lower sides. Nano-sized aluminum and carbon nanofibres (CNF) were used to enhance the burning rate of GAP, and polyethylene glycol (PEG) was used to lower the burning rate. PEG addition is very effective and burning rate is lowered below 4mm/s even at 10MPa. Mechanical properties were also evaluated and shown to be good enough for practical use. Static firing tests of GAP as a gas generator for hybrid rockets were successfully performed in small size rocket motors, and the detail of them are presented and discussed. Combustion mechanism of cured tetra-ol GAP based upon the Beckstead model was developed using the results of fine thermocouple temperature measurement. Some modifications are made to adjust experimental results. PB Begell House LK https://www.dl.begellhouse.com/journals/17bbb47e377ce023,1859db4e52da6fc7,43aaca8f5bda96c0.html