The performance and application of high speed long life LH2 hybrid bearings for reusable rocket engine turbomachineryData are presented for two different experimental programs which were conducted to investigate the characteristics of a hybrid (hydrostatic/ball) bearing operating in liquid hydrogen. The same bearing design was used in both programs. Analytical predictions were made of the bearing characteristics and are compared with the experimental results when possible. The first program used a bearing tester to determine the steady state, transient, and cyclic life characteristics of the bearing over a wide range of operating conditions. The second program demonstrated the feasibility of applying hybrid bearings to an actual high speed turbopump by retrofitting and then testing an existing liquid hydrogen turbopump with the bearings.
Document ID
19830055161
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hannum, N. P. (NASA Lewis Research Center Cleveland, OH, United States)
Nielson, C. E. (Rockwell International Corp. Rocketdyne Div., Canoga Park, CA, United States)