NASA Scientific and Technical Aerospace Reports

needed for validation of a detailed mechanism for this primary reference fuel.
DTIC
Additives; Ignition; Shock Tubes
20040073678 Aerodyne Research, Inc., Billerica, MA
Spectrally Analyzed Embedded Infrared Fiber Optic Diagnostic of Advanced Composite Propellant Combustion
Wormhoudt, Joda; Mar. 31, 2003; 35 pp.; In English; Original contains color illustrations
Contract(s)/Grant(s): DAAD19-00-C-0095
Report No.(s): AD-A422571; ARO-41260.1-CH; No Copyright; Avail: CASI; A03, Hardcopy
This is the final report for a program to extend an embedded-infrared-fiber propellant strand burning diagnostic by
replacing bandpass filter detection by spectral detection. This work builds on previous investigations into the chemical and
physical processes occurring in the condensed phases of nitramine advanced composite propellants, in which we observed
decomposition product gases by infrared absorption in a small volume below the flame front. Detection of infrared absorption
spectra along with video camera and embedded thermocouple records allows characterization of the evolution of
decomposition regions by correlating time, spatial location, temperature and decomposition species fractions. Much of the
effort of the program went into optimizing the sensitivity of the FTIR spectrometer/fiber optic apparatus, and into constructing
test articles. The difficulty of these tasks limited us to only a handful of successful burns. The spectra obtained clearly show
N2O and CO2, thus confirming our earlier work and adding a new species to those detected previously. Evidence for other
gases is less certain.
DTIC
Composite Propellants; Embedding; Fiber Optics; Infrared Radiation; Propellant Combustion; Solid Propellants
20040073699 Aerospace Corp., El Segundo, CA
Assessment of Perchlorate Releases in Launch Operations III
Lang, V. I.; Bohman, K. R.; Tooley, J. T.; Fournier, E. W.; Brady, B. B.; Sep. 18, 2003; 59 pp.; In English; Original contains
color illustrations
Report No.(s): AD-A422600; TR-2003(1306)-2; SMC-TR-04-11; No Copyright; Avail: CASI; A04, Hardcopy
A method for predicting potential perchlorate releases from accidental launch failures has been developed for use in
planning and managing launch activities where solid rocket motors are used. The method is also applicable to assessing
location and quantity of perchlorate release in the event that a launch failure has already occurred. A representative
hypothetical case study is presented to illustrate time scales for potential perchlorate release into bodies of water under
different conditions of temperature and salinity. The report also contains an analysis of water samples (for metals and other
contaminants) in which solid propellant samples were immersed for 11 months.
DTIC
Perchlorates; Spacecraft Launching; Water
20040073717 Army Natick Soldier Center, Natick, MA
Identification of Selected Fibers by Pyrolysis-Gas Chromatography-Mass Spectrometry
Riel-Bagalawis, Rosa L.; Apr. 2004; 41 pp.; In English
Report No.(s): AD-A422631; NATICK/TR-04/011; No Copyright; Avail: CASI; A03, Hardcopy
A pyrolysis-gas chromatographic method was developed in 2000 to characterize military fibers and fabrics. As the
performance and durability of materials relate to their fiber composition, a sensitive and reliable method for the identification
of fibers became necessary. The method was further improved by incorporating a mass spectrometer as a detector to ensure
accurate component identification from the pyrolyzates. Pyrograms and gas chromatographic analysis are highly reproducible.
This analytical method is reliable for the characterization of fibers.
DTIC
Gas Chromatography; Mass Spectroscopy; Pyrolysis
20040073723 State Univ. of New York, Stony Brook, NY
Dynamic Studies in Fiber Processing
Chu, Benjamin; Feb. 18, 2004; 18 pp.; In English; Original contains color illustrations
Contract(s)/Grant(s): DAAD19-00-1-0419
Report No.(s): AD-A422638; ARO-40436.1-CH; No Copyright; Avail: CASI; A03, Hardcopy
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