Ignition and Combustion Enhancement of Boron with Polytetrafluoroethylene
| Autor: | Gregory Young, Chad Stoltz, Colin Roberts |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Atmospheric pressure Mechanical Engineering Analytical chemistry Aerospace Engineering chemistry.chemical_element Autoignition temperature Combustion law.invention Ignition system Minimum ignition energy Fuel Technology chemistry Physics::Plasma Physics Space and Planetary Science law Light emission Physics::Chemical Physics Boron Joule heating |
| Zdroj: | Journal of Propulsion and Power. 31:386-392 |
| ISSN: | 1533-3876 0748-4658 |
| Popis: | The ignition and combustion properties of fuel-rich mixtures of boron and polytetrafluorethylene in air and argon were studied as a function of pressure at a heating rate of approximately 1×105 K/s to simulate heating rates that individual ingredients may be subjected to in propellant burning. Mixtures ranging from 20 to 100 wt% boron (balance polytetrafluorethylene) and pressures up to 7 MPa were considered in this study. Ignition of the samples was achieved by joule heating of a platinum filament within a pressure vessel of selected atmospheres. Ignition of the mixture was characterized by monitoring broadband light emission, whereas boron ignition specifically was verified by identification of the BO2 molecule using emission spectroscopy. At atmospheric pressure, none of the mixtures ignited within the duration of the experiment. Mixtures containing more than 80% boron did not consistently ignite under any conditions within the duration of the experiment. It was found that the ignition temperature for... |
| Databáze: | OpenAIRE |
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