The measurement, modelling and prediction of traction forces in a rocket propellantTraction tests were performed on RPI, a common kerosene-based rocket propellant. Traction data on this fluid are required for purposes of turbopump bearing design, using such codes as SHABERTH. To obtain the traction data, an existing twin disk machine was used, operating under the side slip mode and using elliptical contacts. The resulting traction curves were reduced to fundamental fluid property parameters using the Johnson and Tevaarwerk traction model. Theoretical traction predictions were performed by back substitution of the fundamental properties into the traction model. Comparison of the predicted with the measured curves gives a high degree of confidence in the correctness of the traction model.
Document ID
19910067291
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Tevaarwerk, J. L. (Battelle Memorial Institute Columbus, OH, United States)
Woods, C. (NASA Lewis Research Center Cleveland, OH, United States)