Term Pogo is derived from similarity observed in out-of-phase motion of ends of vehicles to action of Pogo stick; Pogo oscillations result from interaction between longitudinal structural mode of vibration and liquid propulsion system; linear mathematical model is used to establish transfer functions for stability analysis; propulsion system exhibits resonance at frequencies determined by pump cavitation and suction line wave propagation characteristics; system is examined from closed and open-loop standpoint; proximity of suction line first resonance to natural frequency of structural mode is significant stability factor.


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    Title :

    Longitudinal instability of liquid rockets due to propulsion feedback (Pogo)


    Additional title:

    J Spacecraft Rockets


    Contributors:
    Rubin, S. (author)

    Published in:

    Publication date :

    1966


    Size :

    8 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English