36 research outputs found

    Multi-point, multi-mission, high-fidelity aerostructural optimization of a long-range aircraft configuration

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/97134/1/AIAA2012-5706.pd

    High Aspect Ratio Wing Design: Optimal Aerostructural Tradeoffs for the Next Generation of Materials

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140410/1/6.2014-0596.pd

    RANS-based Aerodynamic Shape Optimization Investigations of the Common Research Model Wing

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140409/1/6.2014-0567.pd

    Buffet-Onset Constraint Formulation for Aerodynamic Shape Optimization

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/143072/1/1.J055172.pd

    Multipoint Aerodynamic Shape Optimization Investigations of the Common Research Model Wing

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140687/1/1.J054154.pd

    Aerodynamic Shape Optimization of the STARC-ABL Concept for Minimal Inlet Distortion

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    The NASA single-aisle turboelectric aircraft with an aft boundary layer propulsor (STARC-ABL) concept utilizes a novel electrically driven aft fan that ingests the fuselage boundary-layer for increased propulsive efficiency. In this paper we examine how aerodynamic shaping of the fuselage diffuser and nacelle inlet can reduce the flow distortion at the aft fan. Adjoint-based aerodynamic shape optimization with the ARP1420 distortion metric objective is used to automatically determine the optimal shapes for minimal fan-face distortion. Single and multipoint optimizations are carried out for simplified body-duct and wing-body-duct configurations. These two configurations highlight the importance of including the wing downwash effects when designing the propulsor. The optimizations showed the body-duct configuration can obtain cruise distortion values of approximately 1% while the wing-body-duct configuration can obtain distortion values of just over 2%

    Component-based Geometry Manipulation for Aerodynamic Shape Optimization with Overset Meshes

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/143082/1/6.2017-3327.pd

    Aerostructural Optimization of the D8 Wing with Varying Cruise Mach Numbers

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/143079/1/6.2017-4436.pd

    NASA Ames Research Center Contributions to the PADRI Workshop

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    PADRI: A common platform for validation of aircraft drag reduction technologies; Generic strut-braced wing configuration; Slightly swept wing for low cruise Mach number (0.72); Simplified geometry without engines, empennage or flap-track fairings; Significant wave-drag and flow separation at strut-wing intersection; Focus of this workshop is to redesign the junctio

    Aerodynamic Shape Optimization Investigations of the Common Research Model Wing Benchmark

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140684/1/1.J053318.pd
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