This paper documents a mixed-fidelity approach for the design of low-boom supersonic aircraft with a focus on fuselage shaping.A low-boom configuration that is based on low-fidelity analysis is used as the baseline. The fuselage shape is modified iteratively to obtain a configuration with an equivalent-area distribution derived from computational fluid dynamics analysis that attempts to match a predetermined low-boom target area distribution and also yields a low-boom ground signature. The ground signature of the final configuration is calculated by using a state-of-the-art computational-fluid-dynamics-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 computational fluid dynamics equivalent-area distribution. This result supports the validity of 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.
Mixed-Fidelity Approach for Design of Low-Boom Supersonic Aircraft
Journal of Aircraft ; 48 , 4
2011-07-01
Miscellaneous
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English
Mixed-Fidelity Approach for Design of Low-Boom Supersonic Aircraft
Online Contents | 2011
|A MIXED-FIDELITY APPROACH FOR DESIGN OF LOW-BOOM SUPERSONIC AIRCRAFT
British Library Conference Proceedings | 2010
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