Investigations of Variable Thrust Liquid Oxygen/Kerosene Engine Using A Pintle Injector
- Paper number
IAC-18,C4,5,13,x42302
- Author
Dr. Yang Zhang, China, Beijing University of Aeronautics and Astronautics (BUAA)
- Coauthor
Mr. Nanjia Yu, China, Beijing University of Aeronautics and Astronautics (BUAA)
- Coauthor
Ms. Quan Quan, China, Xuzhou University of Technology
- Coauthor
Mr. Qilin Bao, China, Beijing University of Aeronautics and Astronautics (BUAA)
- Coauthor
Mr. Wenda Li, China, Beihang University (BUAA)
- Coauthor
Mr. Bo Zhao, China, China Academy of Launch Vehicle Technology R&D Center
- Year
2018
- Abstract
The objective of this study is to investigate the characteristics of liquid oxygen (LOX)/kerosene (RP-3) engine by using a pintle injector to adjust the thrust level. Numerical simulations were conducted to examine the combustion performance at the thrust of 1000N and 100N, respectively, with the same oxygen/fuel (O/F) mixing ratio of 2.7. In other words, the variation range of thrust is 10:1. Different initial particle sizes of discrete phase were attempted during the process. Results demonstrate that the combustion efficiency of 1000N condition is 24.49% higher than that of 100N condition. However, the heat protection at lower thrust level is confronted with greater challenges. With the reduce of particle sizes, the high temperature region becomes closer to the downstream of the chamber, and the combustion efficiency increases gradually. The combustion flow field is more sensitive to the initial particle size of the liquid oxygen component. Furthermore, a series of liquid flow experiments were carried out to validate the calculation results. According to the data of high speed camera, the mean diameter of the droplet and the atomization cone angle of jet flow field were analyzed through image processing algorithm. In addition, several effective methods had been concluded to restrain the instability of combustion based on this study and it will benefit to future researches.
- Abstract document
- Manuscript document
IAC-18,C4,5,13,x42302.pdf (🔒 authorized access only).
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