A High-Reynolds-Number Seal Test Facility: Facility Description and Preliminary Test Data,
TEXAS A AND M UNIV COLLEGE STATION DEPT OF MECHANICAL ENGINEERING
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A facility has been developed for testing the leakage and rotordynamic characteristics of interstage-seal configurations for the HPFTP High Pressure Fuel Turbopump of the SSME Space Shuttle Main Engine. Axial Reynolds numbers on the order of 400,000 are realized in the test facility by using a Dupont freon fluid called Halon CBrF3. The kinematic viscosity of Halon is of the same order as the liquid hydrogen used in the HPFTP. Initial testing has focused on the current flight configurations a three-segment, stepped unit and a convergent-taper candidate.