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  • GEOPHYSICS  (474)
  • SPACE VEHICLES  (81)
  • MACHINE ELEMENTS AND PROCESSES  (49)
  • Physics  (47)
  • THERMODYNAMICS AND COMBUSTION  (44)
  • 1970-1974  (695)
  • 1965-1969
  • 1950-1954
  • 1935-1939
  • 1973  (695)
Collection
Keywords
Publisher
Years
  • 1970-1974  (695)
  • 1965-1969
  • 1950-1954
  • 1935-1939
Year
  • 1
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    Application of remote sensor data to geologic analysis of the Bonanza test site Colorado (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Research activities on geologic remote sensing applications for Colorado are summarized. Projects include: regional and detailed geologic mapping, surficial and engineering geology, fracture studies, uranium exploration, hydrology, and data reduction and enhancement. The acquisition of remote sensor data is also discussed.
    Keywords: GEOPHYSICS
    Type: NASA-CR-137363 , REPT-73-4
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Geologic and mineral and water resources investigations in western Colorado using ERTS-1 data (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The author has identified the following significant results. Topography was found to be the most important factor defining folds on ERTS-1 imagery of northwestern Colorado; tonal variations caused by rock reflectance and vegetation type and density are the next most important factors. Photo-linears mapped on ERTS-1 imagery of central Colorado correlate well with ground-measured joint and fracture trends. In addition, photo-linears have been successfully used to determine the location and distribution of metallic mineral deposits in the Colorado Mineral Belt. True color composites are best for general geologic analysis and false color composites prepared with positive/negative masks are useful for enhancing local geologic phenomena. During geologic analysis of any given area, ERTS-1 imagery from several different dates should be studied.
    Keywords: GEOPHYSICS
    Type: E74-10330 , NASA-CR-136825 , REPT-73-5 , PR-9
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Thermal surveillance of Cascade Range volcanoes using ERTS-1 multispectral scanner, aircraft imaging systems, and ground-based data communication platforms (1973)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A combination of infrared images depicting areas of thermal emission and ground calibration points have proved to be particularly useful in plotting time-dependent changes in surface temperatures and radiance and in delimiting areas of predominantly convective heat flow to the earth's surface in the Cascade Range and on Surtsey Volcano, Iceland. In an integrated experiment group using ERTS-1 multispectral scanner (MSS) and aircraft infrared imaging systems in conjunction with multiple thermistor arrays, volcano surface temperatures are relayed daily to Washington via data communication platform (DCP) transmitters and ERTS-1. ERTS-1 MSS imagery has revealed curvilinear structures at Lassen, the full extent of which have not been previously mapped. Interestingly, the major surface thermal manifestations at Lassen are aligned along these structures, particularly in the Warner Valley.
    Keywords: GEOPHYSICS
    Type: Symp. on Significant Results obtained from the ERTS-1, Vol. 1, Sect. A and B; p 1549-1560
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    AE-C attitude determination and control prelaunch analysis and operations plan (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A description of attitude control support being supplied by the Mission and Data Operations Directorate is presented. Included are descriptions of the computer programs being used to support the missions for attitude determination, prediction, and control. In addition, descriptions of the operating procedures which will be used to accomplish mission objectives are provided.
    Keywords: SPACE VEHICLES
    Type: NASA-TM-X-70535 , X-581-73-369
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Noncontacting devices to indicate deflection and vibration of turbopump internal rotating parts (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The research is reported which was conducted to develop devices for measuring vibrations and deflections of parts, such as impellers, shafts, turbine wheels, and inducers in operating turbopumps. Three devices were developed to the breadboard stage: ultrasonic Doppler transducer, flash X-rays, and light-pipe reflectance. It was found that the X-ray technique is applicable to the shaft assembly and the turbine seal of the J-2 pump, and the light-pipe-reflectance device appears to be ideal for cryogenic pump sections.
    Keywords: MACHINE ELEMENTS AND PROCESSES
    Type: NASA-CR-124208
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    California coast nearshore processes study (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The author has identified the following significant results. Large scale sediment plumes from intermittent streams and rivers form detectable seasonal patterns on ERTS-1 imagery. The ocean current systems, as plotted from three California coast ERTS mosaics, were identified. Offshore patterns of sediment in areas such as the Santa Barbara Channel are traceable. These patterns extend offshore to heretofore unanticipated ranges as shown on the ERTS-1 imagery. Flying spot scanner enhancements of NASA tapes resulted in details of subtle and often invisible (to the eye) nearshore features. The suspended sediments off San Francisco and in Monterey Bay are emphasized in detail. These are areas of extremely changeable offshore sediment transport patterns. Computer generated contouring of radiance levels resulted in maps that can be used in determining surface and nearsurface suspended sediment distribution. Tentative calibrations of ERTS-1 spectral brightness against sediment load have been made using shipboard measurements. Information from the combined enhancement and interpretation techniques is applicable to operational coastal engineering programs.
    Keywords: GEOPHYSICS
    Type: E74-10079 , NASA-CR-135824
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    California coast nearshore processes study (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: GEOPHYSICS
    Type: E74-10011 , NASA-CR-135852 , ERTS-1-1-5 , PR-5
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    California coast nearshore processes study (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The author has identified the following significant results. Remote sensor aircraft flights took place simultaneously with ERTS-1 overpasses at the San Francisco, Monterey Bay, and Santa Barbara test cells. The cameras and scanners used were configured for detecting suspended sediment and for maximum water penetration. The Ektachrome/Wratten 12 photographs which were intentionally overexposed 1-1/2 stops were found to show the most extensive sediment transport detail. Minus blue/K 2 photographs illustrate nearshore underwater bottom detail including the head of the Mugu submarine canyon. The EMSIDE 9 channel scanner was employed to classify and differentiate suspended sediment, oil, kelp, and other materials found in the nearshore area. Processing of bulk ERTS-1 computer compatible tapes was utilized to enhance and analyze nearshore sediments. This technique was most successful in enhancing subtle nearshore features found to be faint or invisible on prints made from the supplied negatives. In addition to this continuing computer process, an effort was initiated to interface density values from the bulk tapes into contouring and mapping software.
    Keywords: GEOPHYSICS
    Type: E73-10525 , NASA-CR-131492 , ERTS-1-I-3
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    California coast nearshore processes study (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The author has identified the following significant results. This report contains the techniques used for enhancing and analyzing nearshore processes from ERTS-1 and aircraft data. Four California nearshore sites are used as test cells including the San Francisco area, Monterey Bay, Santa Barbara Channel, and Los Angeles area. Techniques used for analyzing the test cells included direct photographic processing, computer compatible tape gain change enhancement, discrete point density analysis and plotting, and densitometer enhancement. Using these methods, it is possible to measure the seaward extent of the suspended sediment transport and to differentiate sediment levels within the individual sediment lobes. The movement of riverine discharged suspensates and coastal sediments by currents was an intricate part of the sediment transport analysis. The larger estuaries in the test cell areas were also studied for flushing characteristics.
    Keywords: GEOPHYSICS
    Type: E73-10375 , NASA-CR-131016 , ERTS-1-2-1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Evaluation of a metal shear web selectively reinforced with filamentary composites for space shuttle application. Phase 2: summary report: Shear web component fabrication (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The fabrication of two shear web test elements and three large scale shear web test components are reported. In addition, the fabrication of test fixtures for the elements and components is described. The center-loaded beam test fixtures were configured to have a test side and a dummy or permanent side. The test fixtures were fabricated from standard extruded aluminum sections and plates and were designed to be reuseable.
    Keywords: SPACE VEHICLES
    Type: NASA-CR-132321 , D180-15323
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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