An epxerimental investigation was carried out to estimate the influence of geometric parameter on the performance of forced exhaust mixers for high bypass turbofan engines. A 30 percent scale model of a mixer designed for LF500 Series engines was used for this experimental study. Mixer geometric variables included lobe humer, cutback ,scalloping and mixing duct length. Mixing effectiveness, gross thrust coefficient and pressure loss were determined from measure thrust and nozzle exit total pressure and temperature surveys. Data were also obtained for a separated flow engine configuration and for a confluent (free) mixer configuration. The latter was used as a reference condition. Results from this study provide a data base for optimizing the design of turbofan forced mixer - exhaust systems.


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    Title :

    Experimental investigation of exhaust system mixers for a high bypass turbofan engine


    Additional title:

    Experimentelle Untersuchung von Abgasmischern für ein Bläsertriebwerk mit hohem Nebenstrom


    Contributors:

    Published in:

    Publication date :

    1993


    Size :

    16 Seiten, 10 Bilder, 2 Tabellen, 4 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English