@inproceedings{oai:jaxa.repo.nii.ac.jp:00016173, author = {谷香, 一郎 and 長谷川, 進 and 平岩, 徹夫 and 富岡, 定毅 and 村上, 淳郎 and 工藤, 賢司 and Tani, Koichiro and Hasegawa, Susumu and Hiraiwa, Tetsuo and Tomioka, Sadatake and Murakami, Atsuo and Kudo, Kenji}, book = {平成24年度宇宙輸送シンポジウム: 講演集録, Proceedings of Space Transportation Symposium: FY2012}, month = {Jan}, note = {平成24年度宇宙輸送シンポジウム (2013年1月17日-1月18日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県, Space Transportation FY2012 (January 17-18, 2013. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan, 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., 形態: カラー図版あり, 形態: PDF, Physical characteristics: Original contains color illustrations, Physical characteristics: PDF, 資料番号: AA0061856037, レポート番号: STCP-2012-037}, publisher = {宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS), Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)}, title = {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}, year = {2013} }