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Hokkaido University Collection of Scholarly and Academic Papers >
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Mechanisms of Graphite Nozzle Erosion in Hybrid Rockets
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| Title: | Mechanisms of Graphite Nozzle Erosion in Hybrid Rockets |
| Other Titles: | ハイブリッドロケットにおける黒鉛ノズル浸食機構の解明 |
| Authors: | KAMPS, Landon Thomas Browse this author |
| Issue Date: | 25-Sep-2019 |
| Publisher: | Hokkaido University |
| Abstract: | This study elucidates the mechanisms of thermochemical erosion in hybrid rocket nozzles for the first time by analyzing data from 60 hybrid rocket firing tests at various scales and thrust classes ranging from motors that are 50 mm to 300 mm in diameter at thrusts from 10 N to 2,000 N, respectively. This was only possible through the development and validation of a new data reduction methodology that enabled the determination of time-resolved nozzle throat erosion, oxidizer-to-fuel-mass ratio, and nozzle throat wall temperature from measurements of thrust, chamber pressure, oxidizer mass flow rate, overall fuel mass consumption, final nozzle throat diameter, and two thermocouple measurements from within the nozzle body. Empirical analysis led to the formulation of a predictive model for nozzle erosion rate based on heterogeneous combustion theory and turbulent mass transport theory. This work is introduced in the following six chapters: (1) Nozzle Erosion in Chemical Rockets; (2) Model of Chemical Erosion; (3) Comprehensive Data Reduction; (4) Hybrid Rocket Motor Operation; (5) Static Firing Test Results; (6) Impact on Hybrid Rocket Development; and ends with Concluding Remarks. |
| Conffering University: | 北海道大学 |
| Degree Report Number: | 甲第13787号 |
| Degree Level: | 博士 |
| Degree Discipline: | 工学 |
| Examination Committee Members: | (主査) 教授 永田 晴紀, 教授 藤田 修, 教授 大島 伸行, 准教授 橋本 望 |
| Degree Affiliation: | 工学院（機械宇宙工学専攻） |
| Type: | theses (doctoral) |
| URI: | http://hdl.handle.net/2115/75906 |
| Appears in Collections: | 課程博士 (Doctorate by way of Advanced Course) > 工学院(Graduate School of Engineering)
学位論文 (Theses) > 博士 （工学）
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