An experimental investigation of high-frequency combustion oscillations (screaming) was conducted with a 100-pound-thrust acid-hydrocarbon rocket engine and a 500-pound-thrust oxygen-fuel rocket engine. The oscillation frequencies could be correlated as a linear function of the parameter C/L, where C is the experimentally measured characteristic velocity and L is the combustion-chamber length. The tendency of the engines to scream increased as chamber length was increased. With engine configurations that normally had a low efficiency, screaming resulted in increased performance; at the same time, a five to tenfold increase in heat-transfer rate occurred. It was possible, however, to achieve good performance without screaming.


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    Title :

    An Investigation of High-frequency Combustion Oscillations in Liquid-propellant Rocket Engines


    Contributors:

    Publication date :

    1953-06-26


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





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