Data are presented to show the response of an uncontrolled inlet to afterburner lightoff disturbances when a mixed-compression inlet is coupled to a turbofan engine. The results show a significant upstream shock excursion when the afterburner lights which is a result of the direct communication between the afterburner region and the inlet by means of the fan duct and fan stages. In addition results of a waveform analysis on the inlet pressure response to the afterburner light is presented. Inlet unstarts and their effect on operation of the propulsion system is also discussed.


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    Title :

    Effect of afterburner lights and inlet unstarts on a mixed compression inlet turbofan engine operating at Mach 2.5


    Contributors:

    Publication date :

    1975-04-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English