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American Institute of Aeronautics and Astronautics

    Course Outline

    Hybrid Rocket Propulsion



    Course Outline:

    I. Introduction, Classification, and Advantages of Hybrids



    II. Similarity and Scale Effects in Hybrid Rocket Motors


    III. Analytical Models for Hybrid Rockets


    IV. Vortex Injection Hybrid Rockets


    V. High Speed Flow Effects in Hybrid Rockets


    VI. Review of Solid-Fuel Regression Rate Behavior in Classical and Non-Classical Hybrid Rocket Motors
    VII. Solid Fuel Pyrolysis Phenomena and Regression Rate: Mechanisms & Measurement Techniques
    A. Propellant Burn Rate
    B. Enthalpy Balance Model
    C. Correlation of Heat Transfer to Skin Friction (Reynolds Analogy)
    D. Longitudinally Averaged Skin Friction
    E. Mixture Ratio as a Function of Burn Rate
    F. Effect of Port Length on Mixture Ratio


    VIII. Metals, Other Energetic Additives, and Special Binders Used in Solid Fuels for Hybrid Rocket Applications


    IX. Combustion Instability and Transient Behavior in Hybrid Rocket Motors


    X. Large-Scale Hybrid Motor Testing


    XI. N2O/HTPB Hybrid example
    A. Introduction to Chemical Equilibrium Analysis with Applications Code (Cequel/CEA)
    B. Exhaust Gas Properties as a Function of Mixture Ratio
    C. Transient Response
    D. Correlation of Burn Rate to Oxidizer Mass Velocity
    E. Hybrid Rocket Throttling and its Applications


    XII. Flight Testing of Hybrid Powered Vehicles


    XIII. Challenges of Hybrid Rocket Propulsion in the 21st Century