A general analysis of the added mass and damping of a marine propeller in all modes of rigid body vibration is presented. This derivation assumes that the pressure distribution on a propeller blade due to a unit heave oscillation or unit pitch oscillation about the midchord point can be obtained by two-dimensional thin foil theory, lifting-line theory, or lifting-surface theory. These results show that eighteen coefficients are needed to completely characterize the added mass and damping of a propeller. The use of two-dimensional thin foil theory and lifting-line theory to obtain the pressure distribution on a propeller blade due to a unit heave oscillation or unit pitch oscillation are reviewed. These results have been utilized in the PRAMAD computer program which calculates the added mass and damping of a vibrating propeller.


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    Title :

    Added mass and damping of vibrating propeller


    Additional title:

    Bestimmung und Daempfung von vibrierenden Propellern


    Contributors:
    Parsons, M. (author) / Vorus, W. (author) / Richard, E. (author)

    Published in:

    Publication date :

    1980


    Size :

    137 Seiten


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English




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