Effects of geometry and materials on low cycle fatigue life of turbine blades in LOX/hydrogen rocket enginesThis paper presents the results of an advanced turbine blade test program aimed at improving turbine blade low cycle fatigue (LCF) life. A total of 21 blades were tested in a blade thermal tester. The blades were made of MAR-M-246(Hf)DS and PWA-1480SC in six different geometries. The test results show that the PWA-1480SC material improved life by a factor of 1.7 to 3.0 over the current MAR-M-246(Hf)DS. The geometry changes yielded life improvements as high as 20 times the baseline blade made of PWA-1480SC and 34 times the baseline MAR-M-246DS blade.
Document ID
19860057906
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ryan, R. M. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Gross, L. A. (NASA Marshall Space Flight Center Huntsville, AL, United States)