WEKO3
アイテム
給氣冷却器の性能(第3報) : 各種冷却法の性能上の比較
https://jaxa.repo.nii.ac.jp/records/35273
https://jaxa.repo.nii.ac.jp/records/3527301183b90-6402-4aaf-bfb0-632798a765ef
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA4146427.pdf (651.5 kB)
|
|
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||||||
| タイトル | ||||||||||
| タイトル | 給氣冷却器の性能(第3報) : 各種冷却法の性能上の比較 | |||||||||
| 言語 | ||||||||||
| 言語 | jpn | |||||||||
| 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 | |||||||||
| その他のタイトル（英） | ||||||||||
| その他のタイトル | On the Characteristics of the Installed Engine-Air-Cooler System. Part III : Comparison of the Three Cooling System, namely, Cross-Flow-Type, Parallel-Counter-Flow Type and Cooling Medium Type. | |||||||||
| 著者 |
西脇, 仁一
× 西脇, 仁一
× NISIWAKI, Niiti
|
|||||||||
| 出版者 | ||||||||||
| 出版者 | 東京帝國大學航空研究所 | |||||||||
| 出版者（英） | ||||||||||
| 出版者 | Aeronautical Research Institute, Tokyo Imperial University | |||||||||
| 書誌情報 |
東京帝國大學航空研究所報告 en : Report of Aeronautical Research Institute, Tokyo Imperial University 巻 18, 号 247, p. 501-507, 発行日 1942-12 |
|||||||||
| 抄録（英） | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 1. The overall performances of an aero-engine with the installed engine-air-cooler system are discussed for the following three system: -i. Parallel-counter-flow type, ii. Cross-flow type, and iii. Cooling medium type (The heat of the engine-air is transferred to the cooling medium with the aid of the first cooler and the heat of the cooling medium is discharged into the atmosphere through the second cooler.) 2. The overall temperature efficiency η_t, η_θ' of the engine-air-cooler system using a cooling medium. Put β=G_t/G_0 then β=t'-θ_1/t_1-t'-η_0/η_t and [numerical formula] where t'=θ'=the mean temperature of the cooling medium. 3. Figs.1～4 are the comparisons of the η_t' for the three cooling systems. It will be seen from these curves that the parallel-counter-flow type is the most efficient, followed by the cross flow type, the cooling medium type, being the least so, all the differences in the overall temperature efficiencies are small. 4. The overall performances (FP_b/FP_b0-FP_d/FP_b0) of an aero-plane using the engine-air-cooler were calculated for the three cooling systems with the following. (i) The overall performances of the three systems differ slightly ranging from 1 to 3%. (ii) The higher the pressure ratio of the first stage supercharger, the more effective the action of the inter-coolers. For the case of η_t=η_θ=90%, u_t=20m/s, β=0.3, b_4'=5, the pressure ratio of the first and second stage supercharger=respectively are 3.5, and 1.527, the height of flight being 10km, the gain in performance, namely, FP_b/FP_b0-FP_d/FP_b0, is about 26%. (iii) It is preferable to choose coolers of the largest possible thermal efficiency of η_t, η_θ and also the smollest possible values for u_t, u_θ. | |||||||||
| 書誌レコードID | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA00387631 | |||||||||
| 資料番号 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 資料番号: SA4146427000 | |||||||||
