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    Development and Construction of an Interferometer for Optical Measurements of Density Fields (1947)
    In:  CASI
    Details
    Publication Date: 2019-08-15
    Description: A method of interference is described in the present report which promises profitable application in aeronautical research. The physical foundation of the method and a simple method of adjustment are briefly discussed. The special technical construction of the instrument is described which guarantees its use also in the case of vibrations of the surrounding space and permits the investigation of unsteady phenomena. It is found that the interference method will make the small differences in density in the flow field around the body even at low speeds. (40 m/sec) optically measurable.
    Keywords: Instrumentation and Photography
    Type: NACA-TM-1184
    Format: application/pdf
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