This lecture reports a general overview of the current methodologies used at SNIA BPD in designing solid rocket motor propellant grain. The Internal Ballistics aspect in the grain design is emphasized. An overview of what are the general requirements (Thrust vs time curve, volumetric constraints, etc...), the available technologies (propellant types, manufacturing processess, etc..) and the methodology for the selection of the most appropriate one is presented. Then, the methods used for grain design are summarized. The lecture deals, in particular, with the methods for propellant formulation choice, design of internal geometry, propellant characterization (performances, internal ballisitic etc...). An analysis of the predictability factors (various mechanisms that can affect the thrust curve, i.e.: erosive burning, hump factor, etc...), and how they can be taken into account for contingency planning is reported. An anylysis of the predictability factors (various mechanics that can affect the thrust curve, i.e.: erosive burning, hump factor, etc...), and how they can be taken into account for contingency planning is reported. The experimental tests commonly used for grain design validation are summarized.


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    Title :

    Propellant Grain Design


    Contributors:
    S. Scippa (author)

    Publication date :

    1987


    Size :

    20 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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