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  • INSTRUMENTATION AND PHOTOGRAPHY  (4)
  • METALLIC MATERIALS  (2)
  • 1
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    New cine recording ophthalmoscope with television monitoring capability for use in aerospace research (1969)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Cine recording opthalmoscope with TV monitoring for retinal photography during centrifugation
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; TROPHYSICAL JOURNAL
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    High-resolution submillimeter-wave radiometry of supersonic flow (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The recent development of a high-resolution submillimeter-wave heterodyne radiometer has made possible the first measurements of H2O molecule rotational line excitation temperatures and detailed profiles in supersonic flow. Absorption signals were measured across the flow for the 2/11/ from 2//02/ (752 GHz) para-H2O rotational transition against a hot background. These signals decrease downstream owing to the volume expansion of the gas away from the sonic nozle exit in the high-vacuum chamber. Radiative transfer calculations based on the large-velocity-gradient approximation and multilevel statistical equilibrium agree with these results and with the measured spectral line shapes. The data reveal nearly isentropic gas expansion and cooling. These studies have shown that submillimeter-wave heterodyne radiometry can be useful for remote sensing of supersonic flow with low mass flux, provided the signal transmission is through a dry or thin atmosphere.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: AD-A135084 , ESD-TR-83-098 , Applied Physics Letters (ISSN 0003-6951); 42; May 15
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Review of isothermal haze chamber performance (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The theory of this method of characterizing cloud condensation nuclei (CCN) over the critical supersaturation range of about 0.01% to 0.2% was reviewed, and guidelines for the design and operation of IHC's are given. IHC data are presented and critically analyzed. Two of the four IHC's agree to about 40% over the entire range of critical. a third chamber shows similar agreement with the first two over the lower part of the critical supersaturation range but only a factor of two agreement at higher supersaturation. Some reasons for the discrepancies are given.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 85-92
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Development of an automated visual sensitivity tester (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Automated visual sensitivity meter for detecting scotoma, glaucoma, and changes in retinal sensitivity
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TN-D-6190 , A-3651
    Format: application/pdf
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  • 5
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    A Corrosion Control Manual for Rail Rapid Transit (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This manual addresses corrosion problems in the design, contruction, and maintenance of rapid transit systems. Design and maintenance solutions are provided for each problem covered. The scope encompasses all facilities of urban rapid transit systems: structures and tracks, platforms and stations, power and signals, and cars. The types of corrosion and their causes as well as rapid transit properties are described. Corrosion control committees, and NASA, DOD, and ASTM specifications and design criteria to which reference is made in the manual are listed. A bibliography of papers and excerpts of reports is provided and a glossary of frequently used terms is included.
    Keywords: METALLIC MATERIALS
    Type: NASA-CR-169757 , KSC-DD-621 , NAS 1.26:169757 , TR-26-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    A corrosion control manual for rail rapid transit (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: In 1979, during the planning stage of the Metropolitan Dade County Transit System, the need was expressed for a corrosion control manual oriented to urban rapid transit system use. This manual responds to that need. The objective of the manual is to aid rail rapid transit agencies by providing practical solutions to selected corrosion problems. The scope of the manual encompasses corrosion problems of the facilities of rapid transit systems: structures and tracks, platforms and stations, power and signals, and cars. It also discusses stray electric current corrosion. Both design and maintenance solutions are provided for each problem. Also included are descriptions of the types of corrosion and their causes, descriptions of rapid transit properties, a list of corrosion control committees and NASA, DOD, and ASTM specifications and design criteria to which reference is made in the manual. A bibliography of papers and excerpts of reports and a glossary of frequency used terms are provided.
    Keywords: METALLIC MATERIALS
    Type: NASA-TM-85173 , NAS 1.15:85173 , UMTA-DC-06-0152-83-1 , TR-26-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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