A preliminary natural laminar flow (NLF) design method that has been developed and applied to supersonic and transonic wings with moderate-to-high leading-edge sweeps at flight Reynolds numbers is further extended and evaluated in this paper. The modular design approach uses a knowledge-based design module linked with different flow solvers and boundary layer stability analysis methods to provide a multifidelity capability for NLF analysis and design. An assessment of the effects of different options for stability analysis is included using pressures and geometry from an NLF wing designed for the Common Research Model (CRM). Several extensions to the design module are described, including multiple new approaches to design for controlling attachment line contamination and transition. Finally, a modification to the NLF design algorithm that allows independent control of Tollmien-Schlichting (TS) and cross flow (CF) modes is proposed. A preliminary evaluation of the TS-only option applied to the design of an NLF nacelle for the CRM is performed that includes the use of a low-fidelity stability analysis directly in the design module.


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    Titel :

    Building a Practical Natural Laminar Flow Design Capability


    Beteiligte:

    Kongress:

    AIAA Aviation 2017 Conference ; 2017 ; Denver, CO, United States


    Erscheinungsdatum :

    2017-06-05


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Building a Practical Natural Laminar Flow Design Capability

    Campbell, Richard L. / Lynde, Michelle N. | AIAA | 2017


    Design of Natural Laminar Flow Fuselages

    Coiro, D. P. / Nicolosi, F. / International Council of Aeronautical Sciences | British Library Conference Proceedings | 1994


    Design of Natural Laminar Flow Fuselages

    Coiro, D. P. / Nicolosi, F. | British Library Online Contents | 1994