A remotely-adjustable laser transmission and imaging system has been developed for use in a high-pressure, cryogenic wind tunnel. Implementation in the National Transonic Facility has proven the system suitable for velocity and signal lifetime measurements over a range of operating conditions. The measurement system allows for the delivery of high-powered laser pulses through the outer pressure shell and into the test section interior from a mezzanine where the laser is free from environmental disturbances (such as vibrations and excessive condensation) associated with operation of the wind tunnel. Femtosecond laser electronic excitation tagging (FLEET) was utilized to provide freestream velocity measurements, and first results show typical data that may be obtained using the system herein described.


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    Title :

    Implementation of a Pulsed-Laser Measurement System in the National Transonic Facility


    Contributors:

    Conference:

    AIAA Aviation 2019 ; 2019 ; Dallas, TX, United States


    Publication date :

    2019-06-17


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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