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  • INSTRUMENTATION AND PHOTOGRAPHY  (510)
  • COMMUNICATIONS  (299)
  • AERODYNAMICS  (290)
  • 1970-1974  (968)
  • 1960-1964  (131)
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  • 1
    Publication Date: 2019-05-11
    Description: Space exploration & space science - conference addresses
    Keywords: AERODYNAMICS
    Type: NASA-EP-5
    Format: text
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  • 2
    Publication Date: 2019-07-13
    Description: A sensitive carbon monoxide detector, developed specifically for spacecraft use, is described. An instrument range of 0 to 60 ppm CO in air was devised. The fuel cell type detector is used as a highly sensitive electrolysis cell for electrochemically detecting gases. The concept of an electrochemical CO detector is discussed and the CO oxidation behavior in phosphoric and sulfuric acid electrolytes is reported.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-CR-120171
    Format: application/pdf
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  • 3
    Publication Date: 2011-08-16
    Description: The objectives of the Apollo 17 Lunar Sounder Experiment (ALSE) were to detect subsurface geologic structures, to generate a continuous lunar profile, and to image the moon at radar wavelengths. A three-wavelength synthetic-aperture radar (SAR) operating at 60, 20, and 2 m wavelengths was designed to attain these objectives. The design choices reflected a balance of scientific requirements versus Apollo mission and hardware constraints. The radar data from the lunar mission were recorded on photographic film in a conventional SAR format, and were returned to earth for processing. A combination of optical and digital processing and exploitation techniques was applied to the scientific interpretation of the data. Some preliminary results from the lunar mission have been obtained.
    Keywords: COMMUNICATIONS
    Type: IEEE; vol. 62
    Format: text
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  • 4
    Publication Date: 2016-06-07
    Description: A color-television display system and interactive graphics equipment on-line to an IBM 360/44 computer are used to develop a variety of interactive displays which aid in analyzing remote sensor data. These interactive displays are used to: (1) analyze data from a multispectral scanner; (2) develop automatic pattern recognition systems based on multispectral scanner measurements; and (3) analyze data from non-imaging sensors such as the infrared radiometer and microwave scatterometer.
    Keywords: COMMUNICATIONS
    Type: Its 3d Ann. Earth Resources Program Rev., Vol. 2; p 19
    Format: application/pdf
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  • 5
    Publication Date: 2019-07-13
    Description: Aerodynamic drag tests were performed on a conventional cab-over-engine tractor with a 45-foot trailer and five commercially available or potentially available add-on devices using the coast-down method. The tests ranged in velocity from approximately 30 miles per hour to 65 miles per hour and included some flow visualization. A smooth, level runway at Edwards Air Force Base was used for the tests, and deceleration measurements were taken with both accelerometers and stopwatches. An evaluation of the drag reduction results obtained with each of the five add-on devices is presented.
    Keywords: AERODYNAMICS
    Type: NASA-TM-X-56028 , Reduction of Aerodynamic Drag of Trucks Conf.; Oct 10, 1974 - Oct 11, 1974; Pasadena, CA; United States
    Format: application/pdf
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  • 6
    Publication Date: 2019-07-13
    Description: Standard thermoelectric data have been determined for four thermocouple combinations used below the ice point: commercial types E, K, and T and the special combination of KP vs Au-0.07 at.% Fe. Power series coefficients necessary to generate E = f(T) data for these combinations are given. In addition, extensive tests were carried out to ascertain the variability between materials from different manufacturers. Typical wires processed for low-temperature usage often have slightly thermoelectric properties (up to 1%) from those, nominally identical, wires made for high-temperature applications. Generally, type E is the most satisfactory standardized commercial combination. The Au-0.07 at.% Fe material has been examined in particular detail, because it is not yet an ISA standard material. It has excellent sensitivity in the liquid helium/liquid hydrogen temperature range and a nearly linear thermovoltage at higher temperatures.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Symposium on Temperature; Jun 21, 1971 - Jun 24, 1971; Washington, DC
    Format: text
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  • 7
    Publication Date: 2019-07-13
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Symposium on Temperature; Jun 21, 1971 - Jun 24, 1971; Washington, DC
    Format: text
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  • 8
    Publication Date: 2019-06-27
    Description: A feasibility model of an all-electronic bubble memory system has been constructed. It uses a small 60k bit bubble recorder consisting of 6 chips of 10k bits each mounted in three separate packages operating as a FIFO at a 150 KHz bubble data rate. In addition to serving as a direct tape recorder replacement, the bubble recorder can be programmed for random access to each individual chip for ranom block access operation or for self-checking or by-passing any malfunctioning memory chip. Read and write operations can be performed asynchronously from very low frequency up to basic recording field frequency. A large 50M bit prototype is planned.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Format: text
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  • 9
    Publication Date: 2019-06-27
    Description: A method for analysis and classification of verbal communications typically associated with manned space missions or simulations was developed. The study was carried out in two phases. Phase 1 was devoted to identification of crew tasks and activities which require voice communication for accomplishment or reporting. Phase 2 entailed development of a message classification system and a preliminary test of its feasibility. The classification system permits voice communications to be analyzed to three progressively more specific levels of detail and to be described in terms of message content, purpose, and the participants in the information exchange. A coding technique was devised to allow messages to be recorded by an eight-digit number.
    Keywords: COMMUNICATIONS
    Type: NASA-CR-128837
    Format: application/pdf
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  • 10
    Publication Date: 2019-06-27
    Description: Evaluation of high altitude balloon aerial photography for earth resources and oceanography including photographic formats and camera systems and packaging
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-X-2208 , L-7436
    Format: application/pdf
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