An electronically commutated dc motor is reported for driving the camera claw and magazine, and a stepper motor is described for driving the shutter with the two motors synchronized electrically. Subsequent tests on the breadboard positively proved the concept, but further development beyond this study should be done. The breadboard testing also established that the electronically commutated motor can control speed over a wide dynamic range, and has a high torque capability for accelerating loads. This performance suggested the possibility of eliminating the clutch from the system while retaining all of the other mechanical features of the DAC, if the requirement for independent shutter speeds and frame rates can be removed. Therefore, as a final step in the study, the breadboard shutter and shutter drive were returned to the original DAC configuration, while retaining the brushless dc motor drive. (Author)


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    Titel :

    Development of a Drive System for a Sequential Space Camera


    Beteiligte:
    J. T. Sharpsteen (Autor:in) / C. D. Solheim (Autor:in) / L. J. Stoap (Autor:in)

    Erscheinungsdatum :

    1976


    Format / Umfang :

    82 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Development of a drive system for a sequential space camera

    Sharpsteen, J. T. / Solheim, C. D. / Stoap, L. J. | NTRS | 1976


    Development of a Drive System for a Sequential Space Camera

    J. T. Sharpsteen / C. D. Solheim / L. J. Stoap | NTIS | 1976


    Development of a drive system for a sequential space camera

    Sharpsteen, J. T. / Solheim, C. D. / Stoap, L. J. | NTRS | 1976


    Development of a Drive System for a Sequential Space Camera Contract Modification 4(S)

    J. T. Sharpsteen / D. L. Lund / C. D. Solheim et al. | NTIS | 1977


    Development of a drive system for a sequential space camera contract modification 4(S)

    Sharpsteen, J. T. / Lund, D. L. / Solheim, C. D. et al. | NTRS | 1977