Pogo occurs when the natural frequency of a propellant feed line comes close to a readily excited rocket longitudinal structural vibration natural frequency. Maximum Pogo response corresponds to close tuning of the structural and hydraulic frequencies. On Saturn V, accelerations up to 17 g's (Zero To Peak) at the Launch Vehicle/Payload Interface and up to 34 g's at an Engine have been observed. Nicknamed Pogo because it causes the Rocket to stretch and compress like a Pogo stick. First recognized with the Titan II in 1962, Pogo remains a prime consideration in design of launch vehicles today


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    Title :

    JANNAF Lessons Learned Panel: Selected Saturn V History


    Contributors:

    Conference:

    5th Liquid Propulsion ; 2010 ; Colorado Springs, CO, United States
    7th Modeling and Simulation ; 2010 ; Colorado Springs, CO, United States
    57th JANNAF Joint Propulsion Meeting ; 2010 ; Colorado Springs, CO, United States
    4th Spacecraft Propulsion Joint Subcommittee Meeting ; 2010 ; Colorado Springs, CO, United States


    Publication date :

    2010-05-03


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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