Performance Evaluation of LE-7 High Pressure Pumps

Material type: 文書・図像類

Author: 吉田, 誠ほか

Publisher: 航空宇宙技術研究所

Publication date: 1989-06

Material Format: Digital

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Note (General)：: A large launch vehicle, H-II, has been developed in Japan. The launch vehicle will use a large LOX/LH2 engine, LE-7, which also is under development. ...

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Material Type: 文書・図像類
Title: Performance Evaluation of LE-7 High Pressure Pumps
Author/Editor: 吉田, 誠
上條, 謙二郎
長尾, 隆治
YOSHIDA, Makoto
KAMIJO, Kenjiro
NAGAO, Ryuji
Author Heading: 吉田, 誠
上條, 謙二郎
長尾, 隆治
YOSHIDA, Makoto
KAMIJO, Kenjiro
NAGAO, Ryuji
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 1989-06
Publication Date (W3CDTF): 1989-06
Alternative Title: LE-7高圧ポンプの性能評価
Periodical title: 航空宇宙技術研究所報告 = Technical Report of National Aerospace Laboratory TR-1031
No. or year of volume/issue: 1031
Volume: 1031
Pages: 8-
ISSN (Periodical Title): ISSN : 0389-4010
Text Language Code: eng
Target Audience: 一般
Note (General): A large launch vehicle, H-II, has been developed in Japan. The launch vehicle will use a large LOX/LH2 engine, LE-7, which also is under development. The cryogenic propellant feed pumps of the LE-7 are characterized by large flow rate and high delivery pressure. Definition of efficiency and head of the LE-7 cryogenic pumps were required because cryogenic fluids show relatively large compressibility. The polytropic efficiency, which is used in compressors, sometimes is referred to as the true efficiency since it eliminates the effect of compressibility. An efficiency and head similar to the polytropic efficiency and head were newly defined and compared with the adiabatic efficiency and head, and it was concluded that the defined efficiency and head were fairly close to the efficiency and head of the LE-7 cryogenic pumps.
資料番号: NALTR1031000
レポート番号: NAL TR-1031
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ