Monitoring of chemical degradation in propellants using AOTF spectrometer

Robert Feigley; Feng Jin; Jose Lorenzo; Jolanta Soos; Sudhir Trivedi

doi:10.1117/12.518569

27 February 2004 Monitoring of chemical degradation in propellants using AOTF spectrometer

Robert Feigley, Feng Jin, Jose Lorenzo, Jolanta Soos, Sudhir Trivedi

Proceedings Volume 5268, Chemical and Biological Standoff Detection; (2004) https://doi.org/10.1117/12.518569
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

Abstract

Candidate weapon systems have conservative environmental and service life limits to ensure both performance reliability and ordnance safety. One important element that must be monitored is chemical indicators of propellant degradation. Chemical degradation of energetic compounds in propellants can result in reduced performance and potential instability and auto-ignition in extreme circumstances. The current method for testing for chemical indicators of propellant degradation consists of removing a missile from its sub, disassembling it, and performing HPLC testing. An improvement to the current system is to use near-infrared (NIR) spectral analysis to measure chemical indicators of propellant degradation. An AOTF multi-channel spectrometer with reflectance probes can simultaneously scan different areas of a propellant. A study has shown clear spectral differences in samples of M1MP propellant with two different concentrations of the chemical diphenyl amine (DPA). DPA is very similar to many important chemical indicators of propellant degradation. The spectral differences provide the basis for correlating spectral data to DPA concentration using a multivariate regression technique.

Citation Download Citation

Robert Feigley, Feng Jin, Jose Lorenzo, Jolanta Soos, and Sudhir Trivedi "Monitoring of chemical degradation in propellants using AOTF spectrometer", Proc. SPIE 5268, Chemical and Biological Standoff Detection, (27 February 2004); https://doi.org/10.1117/12.518569

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