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  • INSTRUMENTATION AND PHOTOGRAPHY  (3)
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  • 1
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    An optical method for determining level in two-phase cryogenic fluids (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A method was evaluated to measure the liquid-gas and the liquid-slush interfaces in two-phase cryogen systems using optical means. This method makes use of the attenuation of a directed light beam caused by the difference in the index of refraction between the solid particles and the surrounding liquid. Preliminary experimental results obtained in slush nitrogen are shown. The possibility of extending this technique to include a measure of solid fraction is also discussed.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-104524 , E-6398 , NAS 1.15:104524
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    TiCl4 as a source of TiO2 particles for laser anemometry measurements in hot gas (1990)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A method of reacting TiCl4 with water saturated gaseous nitrogen (GN2) at the entrance into a high temperature gas flow is described. The TiO2 particles formed are then entrained in the gas flow and used as seed particles for making laser anemometry (LA) measurements of the flow velocity distribution in the hot gas. Scanning electron microscope photographs of the TiO2 particles are shown. Data rate of the LA processor was measured to determine the amount of TiO2 formed. The TiCl4 and mixing gas flow diagram is shown. This work was performed in an open jet burner.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-102581 , E-5412 , NAS 1.15:102581
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Heat flux measurements (1989)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A new automated, computer controlled heat flux measurement facility is described. Continuous transient and steady-state surface heat flux values varying from about 0.3 to 6 MW/sq m over a temperature range of 100 to 1200 K can be obtained in the facility. An application of this facility is the development of heat flux gauges for continuous fast transient surface heat flux measurement on turbine blades operating in space shuttle main engine turbopumps. The facility is useful for durability testing at fast temperature transients.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-101428 , E-4530 , NAS 1.15:101428 , International Gas Turbine and Aeroengine Congress and Exposition; Jun 04, 1989 - Jun 08, 1989; Toronto, Ontario; Canada
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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