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  • 11
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    Hydrogen-methane fuel control systems for turbojet engines (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Design, development, and test of a fuel conditioning and control system utilizing liquid methane (natural gas) and liquid hydrogen fuels for operation of a J85 jet engine were performed. The experimental program evaluated the stability and response of an engine fuel control employing liquid pumping of cryogenic fuels, gasification of the fuels at supercritical pressure, and gaseous metering and control. Acceptably stable and responsive control of the engine was demonstrated throughout the sea level power range for liquid gas fuel and up to 88 percent engine speed using liquid hydrogen fuel.
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-121247 , R74AEG153 , TM-73-489
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 12
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    Status of JPL solar powered experiments for terrestrial applications (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Results of an ongoing program set up to evaluate solar terrestrial photovoltaic power sources. The results of this program, which now includes a solar array encapsulant and materials test and a solar-powered buoy study, are updated, and the results of efforts to study the dynamic interaction of a solar photovoltaic array and a water electrolysis system coupled to produce hydrogen are reported for the first time.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Intersociety Energy Conversion Engineering Conference; Aug 26, 1974 - Aug 30, 1974; San Francisco, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 13
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    NASA/GSFC Scanning Raman Lidar Measurements of Water Vapor and Cirrus Clouds during WVIOP2000 and AFWEX (2002)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: The NASA/GSFC Scanning Raman Lidar (SRL) was deployed to the Southern Great Plains CART site from September - December, 2000 and participated in two field campaigns devoted to comparisons of various water vapor measurement technologies and calibrations. These campaigns were the Water Vapor Intensive Operations Period 2000 (WVIOP2000) and the ARM FIRE Water Vapor Experiment (AFWEX). WVIOP2000 was devoted to validating water vapor measurements in the lower atmosphere while AFWEX had similar goals but for measurements in the upper troposphere. The SRL was significantly upgraded both optically and electronically prior to these field campaigns. These upgrades enabled the SRL to demonstrate the highest resolution lidar measurements of water vapor ever acquired during the nighttime and the highest S/N Raman lidar measurements of water vapor in the daytime; more than a factor of 2 increase in S/N versus the DOE CARL Raman Lidar. Examples of these new measurement capabilities along with comparisons of SRL and CARL, LASE, MPI-DIAL, in-situ sensors, radiosonde, and others will be presented. The profile comparisons of the SRL and CARL have revealed what appears to be an overlap correction or countrate correction problem in CARL. This may be involved in an overall dry bias in the precipitable water calibration of CARL with respect to the MWR of approx. 4%. Preliminary analysis indicates that the application of a temperature dependent correction to the narrowband Raman lidar measurements of water vapor improves the lidar/Vaisala radiosonde comparisons of upper tropospheric water vapor. Other results including the comparison of the first-ever simultaneous measurements from four water vapor lidar systems, a bore-wave event captured at high resolution by the SRL and cirrus cloud optical depth studies using the SRL and CARL will be presented at the meeting.
    Keywords: Geophysics
    Type: 2002 Atmospheric Radiation Measurement (ARM) Science Team Meeting; Apr 08, 2002 - Apr 12, 2002; Saint Petersburg, FL; United States
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    NASA TECHNICAL REPORTS
  • 14
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    Mariner Venus 67 solar panel (1970)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Design, assembly, tests, and postflight analysis of Mariner Venus 67 solar panel
    Keywords: AUXILIARY SYSTEMS
    Type: NASA-CR-109960 , JPL-TR-32-1321
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 15
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    Solar battery with interconnecting means for plural cells Patent (1969)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Solar battery with interconnecting means for plural cells
    Keywords: AUXILIARY SYSTEMS
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 16
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    Description and applications of a computer program for the interpretation of RGA mass spectra (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Computer program for interpretation of residual gas analyzer mass spectra, considering vacuum environmental testing of spacecraft
    Keywords: CHEMISTRY
    Type: ANNUAL TECHNICAL MEETING AND EQUIPMENT EXPOSITION; Apr 26, 1971 - Apr 30, 1971; LOS ANGELES, CA
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    NASA TECHNICAL REPORTS
  • 17
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    Raman lidar profiling of atmospheric water vapor: Simultaneous measurements with two collocated systems (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Raman lidar is a leading candidate for providing the detailed space- and time-resolved measurements of water vapor needed by a variety of atmospheric studies. Simultaneous measurements of atmospheric water vapor are described using two collocated Raman lidar systems. These lidar systems, developed at the NASA/Goddard Space Flight Center and Sandia National Laboratories, acquired approximately 12 hours of simultaneous water vapor data during three nights in November 1992 while the systems were collocated at the Goddard Space Flight Center. Although these lidar systems differ substantially in their design, measured water vapor profiles agreeed within 0.15 g/kg between altitudes of 1 and 5 km. Comparisons with coincident radiosondes showed all instruments agreed within 0.2 g/kg in this same altitude range. Both lidars also clearly showed the advection of water vapor in the middle troposphere and the pronounced increase in water vapor in the nocturnal boundary layer that occurred during one night.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: American Meteorological Society, Bulletin (ISSN 0003-0007); 75; 6; p. 975-982
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    NASA TECHNICAL REPORTS
  • 18
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    Advances in Raman Lidar Measurements of Water Vapor (2002)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Recent technology upgrades to the NASA/GSFC Scanning Raman Lidar have permitted significant improvements in the daytime and nighttime measurement of water vapor using Raman lidar. Numerical simulation has been used to study the temperature sensitivity of the narrow spectral band measurements presented here.
    Keywords: Meteorology and Climatology
    Type: 21st ILRC Conference; Jul 08, 2002 - Jul 12, 2002; Quebec City, Quebec; Canada
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    NASA TECHNICAL REPORTS
  • 19
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    Performance modeling of ultraviolet Raman lidar systems for daytime profiling of atmospheric water vapor (1991)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: We describe preliminary results from a comprehensive computer model developed to guide optimization of a Raman lidar system for measuring daytime profiles of atmospheric water vapor, emphasizing an ultraviolet, solar-blind approach.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-107789 , NAS 1.15:107789 , DE92-006701-4 , SAND-91-8749 , CONF-920573-4 , CLEO/QELS ''92; May 10, 1992 - May 17, 1992; Anaheim, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 20
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    Large area silicon solar array development. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Solar array technology has made significant improvements during the past five years in terms of the design and application of multikilowatt systems and in improvements of the specific power output capabilities of the arrays. The progress in array performance has been primarily due to array design. Experience in building, testing, and flying flexible arrays is giving confidence that they can be safely integrated into many spacecraft designs without deleterious coupling with the spacecraft control system.
    Keywords: AUXILIARY SYSTEMS
    Type: Power Sources Symposium; May 23, 1972 - May 25, 1972; Atlantic City, NJ
    Format: text
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    NASA TECHNICAL REPORTS
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