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  • 1
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    Earth orbital teleoperator manipulator system evaluation program (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The performance of an orbital teleoperator system which includes small dextrous servicing manipulators to be used in satellite servicing was examined. System/operator performance testing was implemented and the results of a fine positioning control test using two different manipulator systems varying widely in manipulator configuration and control systems are presented. Fine position control is viewed as representing a fundamental requirement placed on manipulator control. The relationship of position control to more complex tasks which directly represent on-orbit servicing operations are also presented.
    Keywords: BEHAVIORAL SCIENCES
    Type: NASA-CR-143874 , REPT-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Earth orbital teleoperator visual system evaluation program (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Empirical tests of range estimation accuracy and resolution, via television, under monoptic and steroptic viewing conditions are discussed. Test data are used to derive man machine interface requirements and make design decisions for an orbital remote manipulator system. Remote manipulator system visual tasks are given and the effects of system parameters of these tasks are evaluated.
    Keywords: BEHAVIORAL SCIENCES
    Type: NASA-CR-143875 , REPT-3
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    A study of payload specialist station monitor size constraints (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Constraints on the CRT display size for the shuttle orbiter cabin are studied. The viewing requirements placed on these monitors were assumed to involve display of imaged scenes providing visual feedback during payload operations and display of alphanumeric characters. Data on target recognition/resolution, target recognition, and range rate detection by human observers were utilized to determine viewing requirements for imaged scenes. Field-of-view and acuity requirements for a variety of payload operations were obtained along with the necessary detection capability in terms of range-to-target size ratios. The monitor size necessary to meet the acuity requirements was established. An empirical test was conducted to determine required recognition sizes for displayed alphanumeric characters. The results of the test were used to determine the number of characters which could be simultaneously displayed based on the recognition size requirements using the proposed monitor size. A CRT display of 20 x 20 cm is recommended. A portion of the display area is used for displaying imaged scenes and the remaining display area is used for alphanumeric characters pertaining to the displayed scene. The entire display is used for the character alone mode.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-CR-120731 , H75-10
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Manipulator system performance measurement (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Free-flying teleoperator technology for satellite servicing is reported. The rationale for a series of manipulator system tests is presented. Data are reported on movement time in a fine positioning task using two different manipulator systems. The movement time data showed reliable effects of movement direction and index of difficulty. These data were considered to be baseline performance measures for the manipulator system used and modifications to the control and visual systems were suggested for future testing.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: JPL The 2nd Conf. on Remotely Manned Systems (RMS); p 29-30
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    A method and data for video monitor sizing (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The paper outlines an approach consisting of using analytical methods and empirical data to determine monitor size constraints based on the human operator's CRT viewing requirements in a context where panel space and volume considerations for the Space Shuttle aft cabin constrain the size of the monitor to be used. Two cases are examined: remote scene imaging and alphanumeric character display. The central parameter used to constrain monitor size is the ratio M/L where M is the monitor dimension and L the viewing distance. The study is restricted largely to 525 line video systems having an SNR of 32 db and bandwidth of 4.5 MHz. Degradation in these parameters would require changes in the empirically determined visual angle constants presented. The data and methods described are considered to apply to cases where operators are required to view via TV target objects which are well differentiated from the background and where the background is relatively sparse. It is also necessary to identify the critical target dimensions and cues.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: Congress of the International Ergonomics Association; Jul 11, 1976 - Jul 16, 1976; College Park, MD; US
    Format: text
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  • 6
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    A study of moving base simulation motion cues utilizing washout technique (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The present study was conducted to derive data on non-visual motion thresholds utilizing washout technique, and to develop specific threshold values for use as washout parameters. It describes the results of acceleration detection studies carried out using the NASA MSFC General Purpose Simulator which provides six degree-of-freedom cab motion. A series of experiments was performed to test the hypothesis that constant velocity visual cues might suppress non-visual deceleration sensitivity. The psychophysical method employed was the forced-choice procedure which theoretically yields a pure sensitivity measure. The MSFC General Purpose Simulator was programmed to provide velocity ramps in three axes - pitch, fore-aft translation, and vertical translation. Data were collected with and without a constant velocity visual input. Comparison of the current results with classical data suggested significantly greater sensitivity of the human observer to fore-aft accelerations than has generally been reported, sensitivity tending to depend on motion direction and sign of velocity change.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: Human factors in our expanding technology; Oct 14, 1975 - Oct 16, 1975; Dallas, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Design parameters for a stereoptic television system based on direct vision depth perception cues (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Remotely controlled systems which use television for visual feedback require that depth cues be available to the operator. A number of techniques have been developed to provide stereoptic video. An analysis of parameters of such systems as related to the depth cues of convergence and retinal disparity was carried out. Parameter requirements were determined for the provision of natural and exaggerated stereoptic cues and expressions were developed for range resolution limits based on the retinal disparity threshold. An empirical study was conducted using a stereoptic video system to determine threshold values
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: Human factors in our expanding technology; Oct 14, 1975 - Oct 16, 1975; Dallas, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Earth orbital teleoperator visual system evaluation program (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Visual system parameters and stereoptic television component geometries were evaluated for optimum viewing. The accuracy of operator range estimation using a Fresnell stereo television system with a three dimensional cursor was examined. An operator's ability to align three dimensional targets using vidicon tube and solid state television cameras as part of a Fresnell stereoptic system was evaluated. An operator's ability to discriminate between varied color samples viewed with a color television system was determined.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-150287 , H-77-3 , REPT-5
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Earth orbital teleoperator manipulator system evaluation program (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The operator's ability to perform five manipulator tip movements while using monoptic and stereoptic video systems was assessed. Test data obtained were compared with previous results to determine the impact of camera placement and stereoptic viewing on manipulator system performance. The tests were performed using the NASA MSFC extendible stiff arm Manipulator and an analog joystick controller. Two basic manipulator tasks were utilized. The minimum position change test required the operator to move the manipulator arm to touch a target contract. The dexterity test required removal and replacement of pegs.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-150286 , H-77-2 , REPT-4
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Earth orbital teleoperator mobility system evaluation program (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The proximity translation and final docking of the space teleoperator evaluation vehicle (STEV) with large mass and small mass satellites was studied. Operations that may be performed by the STEV during the shuttle experiments are approximated.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-150285 , H-77-4 , REPT-1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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