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Relaxation of Chemical Equilibrium in Gases flowing through de Laval Nozzle
https://jaxa.repo.nii.ac.jp/records/34618
https://jaxa.repo.nii.ac.jp/records/3461882f76d59-6433-4722-a99e-a63211255b92
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA2404887.pdf (1.9 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
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| 公開日 | 2015-03-26 | |||||||
| タイトル | ||||||||
| タイトル | Relaxation of Chemical Equilibrium in Gases flowing through de Laval Nozzle | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | departmental bulletin paper | |||||||
| 著者 |
TSUCHIYA, Soji
× TSUCHIYA, Soji
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| 出版者 | ||||||||
| 出版者 | 東京大学航空研究所 | |||||||
| 出版者（英） | ||||||||
| 出版者 | Aeronautical Research Institute, University of Tokyo | |||||||
| 書誌情報 |
東京大學航空研究所報告 en : Report/Aeronautical Research Institute, University of Tokyo 巻 28, 号 3, p. 53-78, 発行日 1962-07 |
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| 抄録（英） | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | Specific impulse of a certain propellant system depends on the situation of the chemical equilibrium in the gases flowing through the rocket nozzle. The situation can be divided into two extreme cases; in one of them, the chemical equilibria are maintained during the rapid expansion through the nozzle, and in the other, the chemical equilibria are frozen. Specific impulses of various propellants in the above two cases have been calculated, and the difference between them is discussed. Next, the third case, where the chemical equilibria is relaxed by way of the expansion process through the nozzle, is considered. The fundamental flow equations are introduced in this case, and as an example of the nozzle flow with chemical equilibria relaxed, specific impulse and other flow parameters of hydrogen gas are calculated numerically. The conditions, that the chemical relaxation occurs in the course of the nozzle flow, are illustrated, and it is ascertained that the chemically relaxed flow can be considered as the flow with the chemical equilibria suddenly frozen at a certain position of the nozzle. In order to know the state of chemical equilibria in the practical rocket nozzle, the exhaust temperature of JP-4/nitric acid engine, whose chamber pressure is 20 atm. and throat to exit area ratio is 3.63,has been measured. The approximate analysis shows that the relaxation of chemical equilibria occures at a position of the nozzle, T≒2600゜K and p≒10 atm. in the case of O/F=5.0. | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0376-1061 | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA00514444 | |||||||
| 資料番号 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 資料番号: SA2404887000 | |||||||
