Particle sizing in rocket motor studies utilizing hologram image processing
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Authors
Netzer, David
Powers, John
Subjects
COMBUSTIBLE FLOW
FLOW VISUALIZATION
IMAGE PROCESSING
IMAGE RECONSTRUCTION
PARTICLE SIZE DISTRIBUTION
SPECKLE HOLOGRAPHY
COMBUSTION CHAMBERS
PULSED LASERS
RUBY LASERS
SPECKLE PATTERNS
FLOW VISUALIZATION
IMAGE PROCESSING
IMAGE RECONSTRUCTION
PARTICLE SIZE DISTRIBUTION
SPECKLE HOLOGRAPHY
COMBUSTION CHAMBERS
PULSED LASERS
RUBY LASERS
SPECKLE PATTERNS
Advisors
Date of Issue
1987-05
Date
May 01, 1987
Publisher
Language
Abstract
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.
Type
Conference Paper
Description
Series/Report No
Department
Organization
Unspecified Center
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
NASA. Ames Research Center, Automated Reduction of Data from Images and Holograms; p. p 589-606
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.