The performance of a scramjet inlet sensor based on tunable diode laser absorption spectroscopy of oxygen in the A-band near 760 nm during a low-altitude, subsonic flight test is discussed. Though the scramjet did not reach the targeted hypersonic flight regime due to the malfunction of the first-stage booster, analysis of the spectral absorption data acquired during the descent flight below 3 km successfully determined pressure and temperature in the inlet and demonstrated that the system was capable of producing an adequate signal-to-noise ratio to allow temperature, pressure, and velocity measurements under the expected hypersonic flight conditions at altitudes up to at least 30 km. This is the first flight-tested tunable diode laser sensor for a scramjet inlet flow, and the robustness and stability of the sensor design in dynamic load conditions were made evident by the quality of the data recorded after a very unstable and high- g launch scenario.


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    Titel :

    Subsonic In-Flight Temperature and Pressure Measurements Using a Scramjet Inlet Flow Sensor


    Beteiligte:
    Kurtz, Joe (Autor:in) / Aizengendler, Mark (Autor:in) / Krishna, Yedhu (Autor:in) / Walsh, Paul (Autor:in) / Brown, Melrose (Autor:in) / O’Byrne, Sean (Autor:in)

    Erschienen in:

    AIAA Journal ; 54 , 3 ; 1011-1017


    Erscheinungsdatum :

    2015-12-23


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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