年間 6 号発行
ISSN 印刷: 2150-766X
ISSN オンライン: 2150-7678
Indexed in
BURNING-RATE CHARACTERISTICS OF BORON/[BAMO/NMMO] FUEL-RICH SOLID PROPELLANT UNDER BROAD RANGES OF PRESSURE AND TEMPERATURE
要約
Burning-rate characteristics of pure and 10% boron-based 3,3-bis (azido- methyl) oxetane (BAMO), and 3-nitratomethyl 3-methyl oxetane (NMMO) copolymer fuel-rich solid propellants in air atmosphere have been studied using a pressure and temperature controlled test chamber with optical windows. The temperature and pressure ranges of test firings were −10 to 60°C and 240.5 to 1030.6 KPa (35 to 150 psia), respectively. Temperature sensitivity of the burning rate, one of the most important design parameters in practical application to solid-fuel ramjets (SFRJ) and to solid-propellant ducted rockets (SDR), was deduced from the experimental data. The thermal wave structure of boron/[BAMO/NMMO] copolymer fuel-rich solid propellants under no cross flow conditions was measured by fine-wire thermocouples. From the temperature-time traces recorded at a fixed chamber pressure, the burning surface temperature was found to increase with the initial temperature. Furthermore, the combustion residues of boron/[BAMO/NMMO] copolymer samples, recovered from the tests with different initial temperatures, were examined employing a scanning electron microscope.
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GUO Yang, ZHANG Wei, ZHOU Xing, DENG Lei, Oxidation Characteristics of Magnesium Diboride, Journal of Inorganic Materials, 34, 8, 2019. Crossref