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Effect of Equivalence Ratio and G-Loading on In-Situ Measurements of Chemiluminescence in an Ultra Compact Combustor | 
 enlarge | Publisher: Storming Media
Category: Book
Buy New: $28.95
Media: Spiral-bound
Pages: 117
ISBN: 1423516060
EAN: 9781423516064
ASIN: 1423516060
Publication Date: 2004
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Condition: Please note that this is a report or document and is not a book, per se. It is 117 pages long and is Velobound in a soft linen cover. This technical report was sponsored by the Pentagon and is provided in the best form available to the government. Sometimes our report quality is picture perfect and in color; other times, particularly for older reports, extensive black-and-white photocopying has degraded the quality. If you have any questions about quality of a particular report, please ask and we would be happy to describe it in more detail.
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Product Description
This is a AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT report procured by the Pentagon and made available for public release. It has been reproduced in the best form available to the Pentagon. It is not spiral-bound, but rather assembled with Velobinding in a soft, white linen cover. The Storming Media report number is A799224. The abstract provided by the Pentagon follows: Using a spectrometer and high temperature fiber optics the relative intensities of the near-infrared, visible, and ultraviolet radiation emitted from the C2*, CH*, and OH* radicals were measured at eight discrete locations within the Ultra Compact Combustor test rig. Blackbody radiation in the near infrared also was observed. The tests were conducted at various g-loadings and overall equivalence ratios and with various air hole configurations. These measurements were compared to determine the effect of these changes on the radiation emitted. Local C2* intensities were used to estimate the flame location within the combustor and the local CH*/OH* ratio was used as a gauge of the local equivalence ratio within the cavity. Results indicate that the highest ratios of CH*/OH* occur in the outer radius of the cavity where the high g-loads transport the colder unreacted fuel and air. The highest C2* ratios also occur in the outer radius. A correlation between cavity equivalence ratio and C2*/OH* was determined for these experiments as well. Fuel droplet size characterization also was conducted using a laser diffraction particle size analyzer. The same pressure atomizer used in the Ultra Compact Combustor test rig was used. Fuel flow conditions simulated the same fuel flow conditions as the test rig. Experiments indicated poor atomization at the lower overall fuel-to-air ratio test conditions since the fuel flow pressure is relatively low at these conditions.
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