2009年
Aerodynamic Experiments of Small Scale Combined Cycle Engine in Various Mach Numbers
TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, SPACE TECHNOLOGY JAPAN
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- 巻
- 7
- 号
- ists26
- 開始ページ
- Pa_59
- 終了ページ
- Pa_64
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.2322/tstj.7.pa_59
- 出版者・発行元
- THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
A small model aerodynamic tests of the combined cycle engine were carried out to evaluate its performance in subsonic and supersonic conditions. In this regime of the flow speed, the combined cycle engine operates as an ejector-jet or ramjet. The nitrogen gas was exhausted as the substitution for the actual rocket gas. In a subsonic condition, there appeared local pressure rise at the kink point of the ramp, increasing the pressure drag. Both wall pressure and the pitot pressure distribution at the exit of the model suggested that the flow structure is "two-layered" ; one is subsonic induced air flow, and the other is the supersonic rocket exhaust. A slit was carved on the topwall inside the isolator section, expecting a better suction performance in the ejector-jet mode. The modification actually had an effect to enhance the lower limit of the rocket pressure at which the choking of the induced air is achieved.
- リンク情報
- ID情報
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- DOI : 10.2322/tstj.7.pa_59
- ISSN : 1347-3840
- eISSN : 1347-3840
- CiNii Articles ID : 130000151885