6,172 research outputs found

    Manipulator system man-machine interface evaluation program

    Get PDF
    Application and requirements for remote manipulator systems for future space missions were investigated. A manipulator evaluation program was established to study the effects of various systems parameters on operator performance of tasks necessary for remotely manned missions. The program and laboratory facilities are described. Evaluation criteria and philosophy are discussed

    Head-up displays - A study of their applicability in civil aviation

    Get PDF
    Benefits and problems of using head-up displays in commercial and general aviation aircraf

    Consideration of radar target glint from ST during OMV rendezvous

    Get PDF
    The nature of radar target glint and the factors upon which it depends when using the Hubble Space Telescope as a radar target is discussed. An analysis of the glint problem using a 35 MHz or 94 MHz radar on the orbital maneuvering vehicle is explored. A strategy for overcoming glint is suggested

    Test report, earth orbiter teleoperator visual system evaluation program

    Get PDF
    Work carried out to identify human performance requirements for remotely manned system is reported. Specifically, an evaluation was made of the human visual system. Data cover distance estimation 4, solid target alignment 2, motion detection 1, and motion detection 2

    Thermoelectric response of Fe1+y_{1+y}Te0.6_{0.6}Se0.4_{0.4}: evidence for strong correlation and low carrier density

    Full text link
    We present a study of the Seebeck and Nernst coefficients of Fe1+y_{1+y}Te1−x_{1-x}Sex_{x} extended up to 28 T. The large magnitude of the Seebeck coefficient in the optimally doped sample tracks a remarkably low normalized Fermi temperature, which, like other correlated superconductors, is only one order of magnitude larger than Tc_c. We combine our data with other experimentally measured coefficients of the system to extract a set of self-consistent parameters, which identify Fe1+y_{1+y}Te0.6_{0.6}Se0.4_{0.4} as a low-density correlated superconductor barely in the clean limit. The system is subject to strong superconducting fluctuations with a sizeable vortex Nernst signal in a wide temperature window.Comment: 4 pages including 4 figure

    A study of payload specialist station monitor size constraints

    Get PDF
    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

    Selection of systems to perform extravehicular activities, man and manipulator. Volume 2 - Final report

    Get PDF
    Technologies for EVA and remote manipulation systems - handbook for systems designer

    Earth orbital teleoperator system man-machine interface evaluation

    Get PDF
    The teleoperator system man-machine interface evaluation develops and implements a program to determine human performance requirements in teleoperator systems

    Earth orbital teleoperator visual system evaluation program

    Get PDF
    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
    • …
    corecore