BEFORE an evaluation of suppressors can be made or before a sensible discussion of suppression goals can be carried on, terms, conditions, and possibilities must be understood. A five-number system for evaluating suppressors is proposed.Methods of jet noise suppression undergoing general development today include frequency shifting, jet spreading, and jet velocity reduction.Basic types of jet spreaders and velocity reducers are shown and ratings given. Combinations of types have resulted in increased suppression in many instances.BEFORE an evaluation of suppressors can be made or before a sensible discussion of suppression goals can be carried on, terms, conditions, and possibilities must be understood. A five-number system for evaluating suppressors is proposed.Methods of jet noise suppression undergoing general development today include frequency shifting, jet spreading, and jet velocity reduction.Basic types of jet spreaders and velocity reducers are shown and ratings given. Combinations of types have resulted in increased suppression in many instances.BEFORE an evaluation of suppressors can be made or before a sensible discussion of suppression goals can be carried on, terms, conditions, and possibilities must be understood. A five-number system for evaluating suppressors is proposed.Methods of jet noise suppression undergoing general development today include frequency shifting, jet spreading, and jet velocity reduction.Basic types of jet spreaders and velocity reducers are shown and ratings given. Combinations of types have resulted in increased suppression in many instances.


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    Title :

    SOUND and FUROR THE JET NOISE SUPPRESSION AGE


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Pre-1964 SAE Technical Papers ; 1906



    Publication date :

    1957-01-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :