Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
出版者
宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
雑誌名
平成24年度宇宙輸送シンポジウム: 講演集録
雑誌名(英)
Proceedings of Space Transportation Symposium: FY2012
Space Transportation FY2012 (January 17-18, 2013. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan
抄録（英）
To reduce the cost of space transportation, the air-breathing engine is considered as one of candidate of its propulsion. However, to cover wide range of flight speed in which such vehicle sores up, the propulsion system has to operate in variable modes being efficient for the incoming air conditions. JAXA is proposing the rocket based combined cycle engine for such variable operation and the ejector-jet mode is adopted for low speed regime. The suction performance of ejector-jet has been long studied experimentally and numerically in JAXA, achieving quite few success in explaining the deterioration of suction with high temperature gas or light gas such as helium. In current study, a simple one dimensional model is introduced based on the former models incorporating the mixing effect of the primary (rocket flow) and second flow (induced air flow). The result was compared with several experimental and numerical data to validate the plausibility of the model. The results showed that the mixing of two flows reduces the suction performance, depending the primary flow conditions. The results explains the actual phenomenon observed in various configurations.
内容記述
形態: カラー図版あり
形態: PDF
内容記述（英）
Physical characteristics: Original contains color illustrations
Physical characteristics: PDF
ロケット-ラムジェット複合サイクルエンジンのエジェクタージェットモードにおける性能評価
61856037.pdf
(662.52KB)
