국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Durability of a Carbon Segmented Circumferential Seal for a Liquid Oxygen Turbopump
저자	Masataka KIKUCHI, Mamoru OIKE, Masataka NOSAKA, Yoshiaki WATANABE
Keyword	Carbon segmented seal; helium purge seal; liquid oxygen turbopump; LE-7 engine
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr01155.pdf?id=NALTR0001155
보고서번호	NAL TR-1155
발행년도	1992.5
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	A carbon segmented circumferential seal with Rayleigh steps,designed as a helium purge seal for the liquid oxygen turbopump of the LE-7 rocket engine,was experimentally studied to improve its durability over a wide range of operating conditions.Five combinations of seali MoS2 lubricating films were examined to enable the tribological performance of the sealing surfaces.The test seal having a MoS2 lubrication film sprayed on the carbon sealing surface and a runner coated with a Cr2O3 plasma-sprayed film demonstrated sufficient durability over a wide range of operating conditions.