Study on the characteristics of rocket/ramjet combined cycle engines(PDF)
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
- Issue:
- 2010年01期
- Page:
- 33-37
- Research Field:
- 研究与设计
- Publishing date:
Info
- Title:
- Study on the characteristics of rocket/ramjet combined cycle engines
- Author(s):
- Zhang Mei; Zhang Mengzheng; Fu Xiuwen
- Xi′an Aerospace Propulsion Institute, Xi′an 710100, China
- Keywords:
- -
- PACS:
- V439
- DOI:
- -
- Abstract:
- In order to analyze the characteristics of rocket/ramjet combined cycle engines, the inner flow of a rocket/ramjet combined cycle engine was simulated without second combustion. Results indicated that the rocket engine should work on designed condition in ejection mode. For better secondary mixing and combustion, transforming of ejection mode to ramjet mode should take place at lower altitude and higher velocity. In ramjet mode，working under low operation condition would help to ignite and flame holding. In rocket mode, inlet closed or not had little influence on performance of the combined cycle engine. The expand flow path of secondary nozzle should be used to improve engine performance.
Last Update: 1900-01-01