The dual-mode free-jet combustor concept, pictured in figure 1, is described. It was introduced in 2010 as a wide- operating-range propulsion device using a novel supersonic free-jet combustion process. The unique feature of the free-jet combustor pictured in figure 1a, is supersonic combustion in an unconfined free-jet that traverses a larger subsonic combustion chamber to a variable nozzle. During this mode of operation, the propulsive stream is not in contact with the combustor walls, and equilibrates to the combustion chamber pressure. To a first order, thermodynamic efficiency is similar to that of a traditional scramjet under the assumption of constant-pressure combustion. Qualitatively, a number of possible benefits to this approach are obvious.


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    Title :

    Dual-Mode Free-Jet Combustor


    Contributors:

    Conference:

    International Symposium on Air Breathing Engines (ISABE) ; 2017 ; Manchester, United Kingdom


    Publication date :

    2017-09-03


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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