From Event: SPIE Optical Engineering + Applications, 2016
The objective of this study is to demonstrate a sensitive Raman technique for sensing degradation of propellant
stabilizers like MNA and 2-NDPA that are commonly used in some missiles. The functionality of missiles and rockets
are often evaluated by being fired or decomposed at routine time-intervals after prolonged storage. However, these
destructive testing techniques for determining long-term rocket motor aging and shelf-life are extremely costly. If
successful, the Raman technique could be utilized to determine the health of propellant stabilizers without dismantling
the missiles as is commonly done at present. Raman technique is to measure concentrations of propellant stabilizers
between 0.1-2% in glycerin. Two different lasers at 785 nm and 532 nm are used for developing this technique. A
secondary objective is to develop a theoretical model that predicts temperature as a function of time and position inside
the cylindrical storage container of MNA or 2-NDPA stabilizer. This model can help in understanding the thermal
degradation of propellant stabilizers.
Carlton Farley, Aschalew Kassu, Jonathan Mills, Jonathan Bibb, Michael Curley, Paul Ruffin, Anup Sharma, Jeremy Rice, and Brian McDonald, "Raman studies for stockpile reliability of missiles by detecting degradation of propellant stabilizers," Proc. SPIE 9958, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications X, 99580P (Presented at SPIE Optical Engineering + Applications: August 29, 2016; Published: 7 September 2016); https://doi.org/10.1117/12.2236331.
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