Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-17T19:16:01.945Z Has data issue: false hasContentIssue false
  • English
  • Français

High Pressure Ignition of Boron in Reduced Oxygen Atmospheres

Published online by Cambridge University Press:  10 February 2011

R. O. Foelsche ,
M. J. Spalding ,
R. L. Burton  and
H. Krier
R. O. Foelsche
Affiliation:
University of Illinois, Urbana, IL 61801 Dept. of Aeronautical and Astronautical Engineering
M. J. Spalding
Affiliation:
University of Illinois, Urbana, IL 61801 Dept. of Mechanical and Industrial Engineering
R. L. Burton
Affiliation:
University of Illinois, Urbana, IL 61801 Dept. of Aeronautical and Astronautical Engineering
H. Krier
Affiliation:
University of Illinois, Urbana, IL 61801 Dept. of Mechanical and Industrial Engineering
Get access

Abstract

Boron ignition delay times for 24 μm diameter particles have been measured behind the reflected shock at a shock tube endwall in reduced oxygen atmospheres and in a combustion bomb at higher pressures in the products of a hydrogen/oxygen/nitrogen reaction. The shock tube study independently varies temperature (1400 – 3200 K), pressure (8.5, 34 atm), and ignition-enhancer additives (water vapor, fluorine compounds). A combustion chamber is used at a peak pressure of 157 atm and temperature in excess of 2800 K to study ignition delays at higher pressures than are possible in the shock tube.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 418: Symposium GG – Decomposition, Combustion, and Detonation Chemistry of Energetic Materials , 1995 , 187
Copyright
Copyright © Materials Research Society 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Brown, R. C., et al., International Journal of Chemical Kinetics 26, pp. 319–332 (1994).Google Scholar
2. Yetter, R. A., Rabitz, H., Dryer, F. L., Brown, R. C., Kolb, C. E., Combustion and Flame 83, pp. 43–62 (1991).Google Scholar
3. Krier, H., Burton, R. L., Pirman, S. R., Spalding, M. J., Journal of Propulsion and Power, in press (1996).Google Scholar
4. Li, S. C., Williams, F. A., Twenty-Third Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, 1990, pp. 1147–1154.Google Scholar
5. Smolanoff, J., et al., submitted to Combustion and Flame (1995).Google Scholar
6. Yuasa, S., Isoda, H., Combustion and Flame 86, pp. 216–222 (1991).Google Scholar
7. Macek, A., Fourteenth Symposium (International)on Combustion, The Combustion Institute, Pittsburgh, 1972, pp. 1401–1411.Google Scholar
8. Macek, A., Semple, J. M., Combustion Science and Technology 1, pp. 181–191 (1969).Google Scholar
9. King, M. K., Journal of Spacecraft and Rockets 19, pp. 294–306 (1982).Google Scholar
10. Roberts, T. A., Burton, R. L., Krier, H., Combustion and Flame 92, pp. 125–143 (1993).Google Scholar
11. Pirman, S. R., Masters Thesis, Department of Mechanical and Industrial Engineering, University of Illinois at Urbana/ Champaign (1994).Google Scholar
12. Crystalline boron sample (˜1 μm) courtesy of Dr. Russell, T., Naval Research Lab.Google Scholar
13. Pearse, R. W. B., Gaydon, A. G., The Identification of Molecular Spectra, Chapman and Hall, London, 1976, pp. 57–59.Google Scholar
14. Foelsche, R. O., Ph.D. Thesis, Department of Aeronautical and Astronautical Engineering, University of Illinois at Urbana/ Champaign (1996).Google Scholar
15. Yeh, C. L., Kuo, K. K., “Theoretical Model Development and Verification of Diffusion/Reaction Mechanisms of Boron Particle Combustion,” The Eighth International Symposium on Transport Phenomena (ISTP-8) in Combustion (1995).Google Scholar