국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Performance Evaluation of LE-7 High Pressure Pumps..
저자	Makoto YOSHIDA, Kenjiro KAMIJO, Takaharu NAGAO
Keyword	-7 LOX/LH2 turbopump; pump performance; adiabatic efficiency; adiabatic head; polytropic efficiency; polytropic head
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr1212t.pdf?id=NALTR0001212T
보고서번호	NAL TR-1212T
발행년도	1993.9
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	The LOX and LH2 pumps of the LE-7 rocket engine are characterized by high delivery pressure and a large flow rate.The hydrodynamic performance of these pumps was thermodynamically evaluated.The performance of the LOX pump was expressed by the adiabatic head and efficiency,because LOX is nor compressibility than LOX.Comparison of the calculations and test results confirmed that they better approximated the true head and efficiency than the adiabatic head and efficiency.The efficiency of both pumps was fairly high compared with that of large rocket pumps which have been developd to date.