SSME HPFTP hot-fire dynamic data evaluation and rotordynamic analysis both confirm that two of the most significant turbopump attributes in determining susceptibility to subsynchronous vibration are impeller interstage seal configuration and rotor sideload resulting from turbine turnaround duct configuration and hot gas manifold. Recent hot-fire testing has provided promising indications that the incorporation of roughned 'damping' seals at the impeller interstages may further increase the stability margin of this machine. A summary of the analysis which led to the conclusion that roughened seals would enhance the stability margin is presented herein, along with a correlation of the analysis with recent test data.
Suppression of subsynchronous vibration in the SSME HPFTP
Unterdrückung von untersynchronen Schwingungen am Haupttriebwerk des Space Shuttles
Biennial Conference on Mechanical Vibration and Noise, 13, ASME Design Technical Conference, 1991 ; 11-16
ASME/DE ; 36
1991
6 Seiten, 6 Bilder, 3 Tabellen, 10 Quellen
Aufsatz (Konferenz)
Englisch
SSME HPFTP/AT turbine blade platform featherseal design
AIAA | 1999
|The SSME HPFTP wavy interstage seal: part 2 - Rotordynamic analysis
Tema Archiv | 1989
|The SSME HPFTP wavy interstage seal: Part 1 - Seal analysis
Tema Archiv | 1989
|