Two cometary missions, making use of the solar electric propulsion system, have recently been considered for launches in the mid to late 1980's. This paper presents navigation accuracy analysis results for the rendezvous portions of these missions, the target bodies being Comet Tempel 2 and Comet Tuttle-Giacobini-Kresak. Orbit determination and guidance accuracies are presented for the baseline navigation strategies, along with the results of a number of sensitivity studies involving parameters such as data frequencies, data accuracies, ion drive thrust vector errors, comet emphemeris uncertainties, time lags associated with data processing and command sequence generation, and certain guidance law parameters. The accuracies obtained are, in some respects, significantly better than the results of previous solar electric propulsion comet rendezvous studies.


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    Title :

    Navigation accuracy analyses for two comet rendezvous missions using ion drive


    Contributors:
    Wood, L. J. (author) / Krinik, A. C. (author)

    Conference:

    Astrodynamics Conference ; 1980 ; Danvers, MA


    Publication date :

    1980-08-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :



    Comet rendezvous missions

    Manning, L. R. | NTRS | 1970


    Comet rendezvous missions

    MANNING, L. | AIAA | 1970


    Guidance and navigation for comet rendezvous missions

    Fraser, D. / Malchow, H. L. / Sackett, L. | NTRS | 1971


    Navigation Accuracy Analysis for an Ion Drive Rendezvous with Comet Tempel 2

    Lincoln J. Wood / Alan C. Krinik Jet Propulsion Laboratory / California Institute of Technology | AIAA | 1981