This paper documents a mixed-fidelity approach for the design of low-boom supersonic aircraft as a viable approach for designing a practical low-boom supersonic configuration. A low-boom configuration that is based on low-fidelity analysis is used as the baseline. Tail lift is included to help tailor the aft portion of the ground signature. A comparison of low- and high-fidelity analysis results demonstrates the necessity of using computational fluid dynamics (CFD) analysis in a low-boom supersonic configuration design process. The fuselage shape is modified iteratively to obtain a configuration with a CFD equivalent-area distribution that matches a predetermined low-boom target distribution. The mixed-fidelity approach can easily refine the low-fidelity low-boom baseline into a low-boom configuration with the use of CFD equivalent-area analysis. The ground signature of the final configuration is calculated by using a state-of-the-art CFD-based boom analysis method that generates accurate midfield pressure distributions for propagation to the ground with ray tracing. The ground signature that is propagated from a midfield pressure distribution has a shaped ramp front, which is similar to the ground signature that is propagated from the CFD equivalent-area distribution. This result confirms the validity of the low-boom supersonic configuration design by matching a low-boom equivalent-area target, which is easier to accomplish than matching a low-boom midfield pressure target.


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    Title :

    A Mixed-Fidelity Approach for Design of Low-Boom Supersonic Aircraft


    Contributors:

    Conference:

    48th AIAA Aerospace Sciences Meeting ; 2010 ; Orlando, FL, United States


    Publication date :

    2010-01-04


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





    A MIXED-FIDELITY APPROACH FOR DESIGN OF LOW-BOOM SUPERSONIC AIRCRAFT

    Li, W. / Shields, E. / Geiselhart, K. et al. | British Library Conference Proceedings | 2010


    A Mixed-Fidelity Approach for Design of Low-Boom Supersonic Aircraft

    Li, Wu / Shields, Elwood / Geiselhart, Karl | AIAA | 2010