재사용 우주발사체 액체로켓엔진용 터보펌프에 적용하기 위한 하이브리드 유체 스러스트 베어링의 정하중 특성: 실험과 해석의 비교

Abstract

The present work compares the measured static load characteristics of hybrid fluid film thrust bearings for liquid rocket engine turbopumps to predictions. Static loads over 700 N are applied to the vertically installed test hybrid thrust bearing, lubricated with high pressure compressed air as a working fluid. Three displacement sensors, equally spaced, measure fluid film thickness while a strain-gauge type load cell measures the applied static load. Over the entire static load ranges, the predicted results correlate very well with the measurements.