An Investigation of the Navy Oil Analysis Program (NOAP) (As Applied to Jet Aircraft Engines and Accessories)
Abstract
An investigation of the current Navy Oil Analysis Program has been conducted with the intent of increasing the efficiency of the program in the prediction of jet engine failure. A comprehensive review of the available literature concerning current oil analysis systems was made in conjunction with interviews of both military and commercial personnel. The conclusion drawn from this evaluation is that the current spectrometric methods used by the Navy are capable of effectively determining amount and composition of the contamination particles in lubricating oils; however, this determination is limited to particles under 8 microns (approximately). Also, spectrometric analysis cannot identify the shape, size, or the probable wear mechanism which created the particles. Since catastrophic failures are quite often characterized by the sudden appearance of particles greater than 8 microns, it was evident that some supplemental analysis would be of considerable value. The research conducted indicated that, due to technical and economic reasons, ferrography is the most promising method to supplement spectrometry for oil analysis. (A specific operational example is provided.) The recommendation is to conduct a pilot project to concurrently operate and evaluate a spectrograph and a ferrograph to determine their complementary capabilities.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 27, 1976
- Accession Number
- ADA030787
Entities
People
- Charles W. Chandler Jr.