| Autor: |
Michikata Kono, Naohiro Sato, Yasushige Ujiie, Kazuma Miyazaki, Shuhei Takahashi, Mitsuhiro Tsue, Masahiko Nakamura, Akira Imamura, Seiji Shiba |
| Rok vydání: |
1998 |
| Předmět: |
|
| Zdroj: |
Journal of the Japan Society for Aeronautical and Space Sciences. 46:230-238 |
| ISSN: |
0021-4663 |
| DOI: |
10.2322/jjsass1969.46.230 |
| Popis: |
Feedback control tests were carried out to improve flame-holding performance in a fixed-geometry scramjet combustor. When the combustor geometry was fixed, pressure oscillation and/or blow-off occurred easily by small changes of the main airflow condition and the equivalence ratio. These phenomena could be improved by changing the combustor geometry according to the conditions. Hence, instead of mechanical transformation, four air injectors were installed on the combustor wall and the secondary air was injected into the boundary layer which developed on the combustor wall in order to control the effective cross sectional area of the combustor. Signals from pressure transducers on the combustor wall were used as feedback signals. The present control system worked effectively for improving pressure oscillation and/or blow-off and could respond for rapid change of the condition. It was also valid for improving self-ignition limit. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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