INVESTIGATION OF SELF-ALIGNING MOUNTINGS FOR SPACE OPERATION.
Final rept. for 1 Mar 63- 1 Mar 64,
BOEING CO SEATTLE WASH
Pagination or Media Count:
A study phase and an experimental test program are described for investigation of self-aligning bearing mountings in air and ultra-high vacuum from -100F to 2500F. Eleven self-aligning mounting concepts plus sixteen variations in concept configurations were evaluated in the study phase. Two different concepts, an antifriction ball and a multiple lubricant ring, were selected for test and evaluation in a Phase II test program. A study was conducted throughout the program to select lubricants for operation in air and vacuum from -100F to 2500F. Test fixtures were designed and fabricated to permit evaluation of mounting performance under simulated space and re-entry environments. Mountings fabricated from aluminum oxide were subjected to alignment-misalignment cycling in air from -100F to 1500F and in a vacuum from 0F to 1500F. Minimum pressure obtained in vacuum tests was less than 5 x 10 to the minus 11th power Torr. Successful operation was obtained in air at -100F and in an ultra-high vacuum from 0F to 1500F with a radial load of 2500 pounds. Conclusions and recommendations for further investigations are presented. Author