RT Journal Article ID 450a25965b5d93e3 A1 Hori, Keiichi A1 Nomura, Yuya A1 Fujisato, Koji A1 Yagishita, Takeshi A1 Nishioka, Makihito A1 Wada, Yutaka A1 Kimura, Motoyasu T1 GLYCIDYL AZIDE POLYMER AND POLYETHYLENE GLYCOL MIXTURES AS HYBRID ROCKET FUELS JF International Journal of Energetic Materials and Chemical Propulsion JO IJEMCP YR 2012 FD 2013-01-10 VO 11 IS 2 SP 97 OP 106 K1 glycidyl azide polymer (GAP) K1 poly ethylene glycol (PEG) K1 hybrid rocket K1 gas hybrid K1 traditional hybrid K1 regression rate AB Two types of hybrid rocket motors that use mixtures of glycidyl azide polymer (GAP) and polyethelene glycol (PEG) as the solid fuel are proposed and the combustion characteristics are presented. GAP and PEG mixtures in which the PEG concentrations are lower than a critical value between 40 and 50 mass% can sustain self-combustibility and can be used as a solid fuel for gas hybrid rocket systems, while mixtures with higher PEG concentrations and without self-combustibility can be employed as a solid fuel for traditional hybrid rockets. Thrust control and tailoring using changes in both the oxidizer/fuel (O/F) ratio and grain composition were investigated for the gas hybrid system, and successful control was accomplished in experiments. Firing tests were conducted of a traditional hybrid rocket motor as functions of the oxygen mass flux and burning pressure. The effect of GAP is obvious, and GAP enhances the regression rates of the solid fuel grain, and an effect of pressure was also found. The distributed flame model is discussed briefly here to explain the regression rate increase by GAP. PB Begell House LK https://www.dl.begellhouse.com/journals/17bbb47e377ce023,29b5c6d1481359cd,450a25965b5d93e3.html