An expert system for spectroscopic analysis of rocket engine plumesThe expert system described in this paper analyzes spectral emissions of rocket engine exhaust plumes and shows major promise for use in engine health diagnostics. Plume emission spectroscopy is an important tool for diagnosing engine anomalies, but it is time-consuming and requires highly skilled personnel. The expert system was created to alleviate such problems. The system accepts a spectral plot in the form of wavelength vs intensity pairs and finds the emission peaks in the spectrum, lists the elemental emitters present in the data and deduces the emitter that produced each peak. The system consists of a conventional language component and a commercially available inference engine that runs on an Apple Macintosh computer. The expert system has undergone limited preliminary testing. It detects elements well and significantly decreases analysis time.
Document ID
19930036078
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Reese, Greg (NASA John C. Stennis Space Center Bay Saint Louis, MS, United States)
Valenti, Elizabeth (NASA John C. Stennis Space Center Bay Saint Louis, MS, United States)
Alphonso, Keith (Sverdrup Technology, Inc. Bay Saint Louis, MS, United States)
Holladay, Wendy (NASA Stennis Space Center Bay Saint Louis, MS, United States)