The Lawrence Livermore National Laboratory is engaged in a technology development project which includes designing a lightweight, autonomous, highly maneuverable space vehicle, commonly referred to as a probe. The current probe design includes a guidance and control system that requires complete information on the dynamic response of the probe during operation. A finite element model of the probe was constructed to provide analytical information on the dynamic response to specific operational inputs. In order to verify the assumptions made in the model, a mass mock-up of the probe was constructed at LLNL and an experimental modal survey was performed to determine the frequencies, damping values and deflection shapes for each natural mode of the mock-up. The experimental modal parameters were compared with the parameters obtained through modal analysis of the finite element model to provide a measure of the correlation between the model and the actual structure. This report describes the experimental modal testing and analysis of the mass mock-up and compares the experimental results with the finite element results.


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    Title :

    Dynamic characterization of a lightweight, highly maneuverable spacecraft using modal and finite element analyses


    Additional title:

    Dynamische Charakterisierung eines leichten, hoch manövrierfähigen Raumfahrzeuges mit Hilfe der Modalanalyse und der Finite-Elemente-Analyse


    Contributors:


    Publication date :

    1993


    Size :

    8 Seiten, 11 Bilder, 2 Tabellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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