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Particle sizing in rocket motor studies utilizing hologram image processing (1987)

Powers, John ; Netzer, David

In: CASI

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Publication Date: 2013-08-31

Description: A technique of obtaining particle size information from holograms of combustion products is described. The holograms are obtained with a pulsed ruby laser through windows in a combustion chamber. The reconstruction is done with a krypton laser with the real image being viewed through a microscope. The particle size information is measured with a Quantimet 720 image processing system which can discriminate various features and perform measurements of the portions of interest in the image. Various problems that arise in the technique are discussed, especially those that are a consequence of the speckle due to the diffuse illumination used in the recording process.

Keywords: SPACECRAFT PROPULSION AND POWER

Type: NASA. Ames Research Center, Automated Reduction of Data from Images and Holograms; p 589-606

Format: application/pdf

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