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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Druckformat: 2150-766X
ISSN Online: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.v8.i4.70
pages 345-356

IGNITION CHARACTERISTICS OF BORON/POTASSIUM NITRATE USING A DIODE LASER IN A VACUUM

Hiroyuki Koizumi
Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510 Japan
Masakatsu Nakano
Tokyo Metropolitan College of Aeronautical Engineering, 8-52-1 Minami Senju, Arakawa-ku, Tokyo 116-8523 Japan
Masashi Watanabe
Nichiyu Giken Kogyo Co.,Ltd, 21-2 Matoba-shinmachi, Kawagoe, Saitama 350-1107, Japan
Takayoshi Inoue
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 133-8656 Japan
Kimiya Komurasaki
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 133-8656 Japan
Yoshihiro Arakawa
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 133-8656 Japan

ABSTRAKT

The laser ignition characteristics of boron/potassium nitrate in a vacuum were investigated using a diode laser as an energy source. Ignition probability in the vacuum was experimentally measured. The minimum laser power for ignition was at most 0.4 W. The result was compared with the numerical calculation of the three-dimensional heat conduction with an exothermic reaction. As a result, the calculated threshold power and ignition time agreed well with the experimental results.

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