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Demonstration of Fabry-Perot interferometric spectrometry technologyAs rocket engine components experience wear or failure, anomalous materials may be entrained in the plume. Historically, visible plume anomalies have preceded many rocket engine failures, some of which have been catastrophic. Development of a small, rugged, high-speed, high resolution Fabry-Perot interferometer (FPI) based spectrometer capable of detecting the spectral signatures of eroding engine components during rocket engine test and/or flight operations is described. An operational plume spectrometer fabricated with miniaturized optics has been successfully tested. An extensive test series was conducted to define the limits of the spectrometer with respect to time-response and resolution. The data collected during testing were correlated with measurements obtained using sensitive ground equipment in order to benchmark the spectrometer's performance against a known device. The FPI demonstrated the reliability required for a flight instrument by functioning satisfactorily at or near the rocket engine test stand environment. Several of the optical components are interchangeable, allowing collection of a greater variety of plume signals. Also, the FPI's high resolution capabilities suggest it is suitable for application to both absorption and emission spectroscopy.
Document ID
19930066244
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Petersen, T. V.
(NASA John C. Stennis Space Center Bay Saint Louis, MS, United States)
Makel, D. B.
(Aerojet, Propulsion Div., Sacramento CA, United States)
Thurman, C.
(NASA Stennis Space Center Bay Saint Souis, MS, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Subject Category
Instrumentation And Photography
Report/Patent Number
AIAA PAPER 93-2510
Meeting Information
Meeting: AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit
Location: Monterey, CA
Country: United States
Start Date: June 28, 1993
End Date: June 30, 1993
Sponsors: ASEE, SAE, AIAA, ASME
Accession Number
93A50241
Distribution Limits
Public
Copyright
Other

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