Japan Aerospace Exploration Agency(JAXA)
Japan Aerospace Exploration Agency(JAXA)
Japan Aerospace Exploration Agency(JAXA)
Japan Aerospace Exploration Agency(JAXA)
Japan Aerospace Exploration Agency(JAXA)
AES
出版者
日本航空宇宙学会(JSASS)
出版者（英）
The Japan Society for Aeronautical and Space Sciences (JSASS)
雑誌名
第58回宇宙科学技術連合講演会講演集
雑誌名(英)
Proceedings of 58th Space Sciences and Technology Conference
"We choose a new type of cluster nozzle for satellites, from the perspective of improved performance within the restricted installation area of rockets. The new nozzles are considered much more efficient for the larger nozzle expansion area ratio than existing ones. Given the concerns over degraded performance due to a slower flow of exhaust gas caused by shock waves in the overlapped area between the modules that constitute a cluster nozzle, we evaluated the effect of each module’s overlap ratio on nozzle performance based on an examination using nitrogen gas. Our experimental and analytical results by cold gas revealed that the plug cluster nozzle having a low overlap ratio offers better performance than the bell nozzle having the same effective expansion ratio. In order to understand the combustion gas characteristics of the plug cluster nozzle, we plan to perform firing tests. We describe the firing test nozzle, test equipment and the firing test of the ignitor and the injector for the nozzle in this paper."
オーバラップクラスタノズル燃焼試験
