NASA NTRS · 20130012715
Condition Based vs. Time Based Maintenance: Case Study on Hypergolic Pumps
Abstract
Two Pad 39B Ox pumps were monitored with the Baker Instruments Explorer Motor tester. Using the torque spectrum it was determined that Ox pump #2 had a significant peak at a frequency, which indicated lubricant fluid whirl. Similar testing on Ox pump #1 didn't indicate this peak, an indication that this pump was in good mechanical condition. Subsequent disassembly of both motors validated these findings. Ox pump #2 rear bearing showed significant wear, the front bearing showed little wear. Ox pump #1 was still within manufacturers tolerances.
Keep this discovery
Explore connections, maps & timelines
Gibson, Lewis J.. 2007-08-13. Condition Based vs. Time Based Maintenance: Case Study on Hypergolic Pumps. https://ntrs.nasa.gov/citations/20130012715
Cite the original work for its findings. Save a collection to share your selection of sources.