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  • 1
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    Laser anemometry: A status report (1986)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: A laser anemometer system is being developed for the warm turbine facility as part of the HOST program. The system will be built using results obtained from the analytical and experimental research program. The status report of the laser anemometry applications research effort is presented. The designs for the turbine casing, the windows, and the positioning system were completed. A block diagram of the laser anemometer system, signal processing scheme, and computer system is given.
    Keywords: LASERS AND MASERS
    Type: Turbine Engine Hot Section Technology 1986; p 61-68
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Heat flux measurements (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: This paper discusses a new automated, computer-controlled heat flux measurement facility. 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 gages for continuous fast transient surface heat flux measurement on turbine blades operating in Space Shuttle main engine turbopumps. The facility is also useful for durability testing at fast temperature transients.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: ASME PAPER 89-GT-107
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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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
  • 4
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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
  • 5
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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
  • 6
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    Automated Heat-Flux-Calibration Facility (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Computer control speeds operation of equipment and processing of measurements. New heat-flux-calibration facility developed at Lewis Research Center. Used for fast-transient heat-transfer testing, durability testing, and calibration of heat-flux gauges. Calibrations performed at constant or transient heat fluxes ranging from 1 to 6 MW/m2 and at temperatures ranging from 80 K to melting temperatures of most materials. Facility developed because there is need to build and calibrate very-small heat-flux gauges for Space Shuttle main engine (SSME).Includes lamp head attached to side of service module, an argon-gas-recirculation module, reflector, heat exchanger, and high-speed positioning system. This type of automated heat-flux calibration facility installed in industrial plants for onsite calibration of heat-flux gauges measuring fluxes of heat in advanced gas-turbine and rocket engines.
    Keywords: PHYSICAL SCIENCES
    Type: LEW-14724 , NASA Tech Briefs (ISSN 0145-319X); 13; 6; P. 59
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Heat-Flux-Measuring Facility (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Apparatus simulates conditions in turbine engines. Automated facility generates and measures transient and steady-state heat fluxes at flux densities from 0.3 to 6 MW/m(Sup2) and temperatures from 100 to 1,200 K. Positioning arm holds heat-flux gauge at focal point of arc lamp. Arm previously chilled gauge in liquid nitrogen in Dewar flask. Cooling water flows through lamp to heat exchanger. Used to develop heat-flux gauges for turbine blades and to test materials for durability under rapidly changing temperatures.
    Keywords: PHYSICAL SCIENCES
    Type: LEW-14917 , NASA Tech Briefs (ISSN 0145-319X); 14; 8; P. 42
    Format: text
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    NASA TECHNICAL REPORTS
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