Abstract
The Suomi National Polar-orbiting Partnership (SNPP) Advanced Technology Microwave Sounder (ATMS) has been performing nominally on-orbit since its launch in October 2011. Should something happen to the JPSS-1 instrument, the user community will want the SNPP instrument to continue to provide data until another instrument is in orbit. The bearings in the Scan Drive Subsystem are the components most likely to limit life expectancy of the instrument. Analysis indicates bearing life of this particular bearing design is most affected by the single direction of rotation of the scan drive causing wear of the bearings. NASA and the instrument vendor, Northrop Grumman Electronic Systems, have completed analysis of several alternate life extension scan profiles to reducing the wear on the bearings. In this paper we present the scan profile that will be recommended, to extend life with minimum performance impact and minimum perturbation to ground operations, causing wear of the bearings. NASA and the instrument vendor, Northrop Grumman Electronic Systems, have completed analysis of several alternate life extension scan profiles to reducing the wear on the bearings. In this paper we present the scan profile that will be recommended, to extend life with minimum performance impact and minimum perturbation to ground operations.
SNPP ATMS Alternate Scan Profile For Risk Mitigation To Extend On-Orbit Life
The Suomi National Polar-orbiting Partnership (SNPP) Advanced Technology Microwave Sounder (ATMS) has been performing nominally on-orbit since its launch in October 2011. Should something happen to the JPSS-1 instrument, the user community will want the SNPP instrument to continue to provide data until another instrument is in orbit. The bearings in the Scan Drive Subsystem are the components most likely to limit life expectancy of the instrument. Analysis indicates bearing life of this particular bearing design is most affected by the single direction of rotation of the scan drive causing wear of the bearings. NASA and the instrument vendor, Northrop Grumman Electronic Systems, have completed analysis of several alternate life extension scan profiles to reducing the wear on the bearings. In this paper we present the scan profile that will be recommended, to extend life with minimum performance impact and minimum perturbation to ground operations, causing wear of the bearings. NASA and the instrument vendor, Northrop Grumman Electronic Systems, have completed analysis of several alternate life extension scan profiles to reducing the wear on the bearings. In this paper we present the scan profile that will be recommended, to extend life with minimum performance impact and minimum perturbation to ground operations.