In the aerodynamic design of the National EXperimental Transport (NEXST) program, a supersonic natural laminar flow (NLF) wing design concept was originally developed. Before the flight test of the NEXST-1 airplane, more detailed transition analysis should be performed in order to validate the NLF wing effect. Therefore, the JAXA-ONERA cooperative research project started in April 2000, because ONERA had great ability of analyzing transition phenomena and JAXA had some experiment transition data in supersonic flow. In the transition anlysis on the sharp cone with a half angle of 5 degrees, the nose cone, and the NLF wing of the NEXST-1 airplane, good cross validation of both ONERA's and JAXA 's eN codes was obtained. There was also high correlation between the experimental results in ONERA's continuous circuit-flow type supersonic wind vessel and both laboratories' predictions under the assumption of a critical transition N value of 6. In addition, a risk of transition due to attachment-line contamination was predicted at inner wing, using the well-known Poll's criterion.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Experimental and Numerical Research on Boundary Layer Transition Analysis at Supersonic Speed: JAXA-ONERA Cooperative Research Project


    Contributors:
    K. Yoshida (author) / H. Sugiura (author) / Y. Ueda (author) / H. Ishikawa (author) / N. Tokugawa (author)

    Publication date :

    2009


    Size :

    110 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    JAXA-ONERA-DLR cooperation: results from rotor optimization in hover

    Wilke, Gunther / Bailly, Joëlle / Kimura, Keita et al. | Springer Verlag | 2022

    Free access




    HIGH-SPEED COMPOUND HELICOPTER RESEARCH AT JAXA

    Sugiura, M. / Tanabe, Y. / Kobiki, N. et al. | British Library Conference Proceedings | 2022