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NASA NTRS · 20220006736

Low-Speed Performance Enhancement using Localized Active Flow Control: Simulations, Scaling and Design of Localized Active Flow Control on the Common Research Model (4/4)

Arvin Shmilovich·Matthew Stauffer·Rene Woszidlo·Paul Vijgen
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Abstract

This report is dedicated to the application of localized AFC on the NASA CRM-HL wind tunnel model, with focus on the aileron application discussed in the CFD study (final report document #2). The experience developed for the Reference Aircraft guided the implementation on the CRM model. CFD evaluations are performed on a representative high-lift configuration, for a set of aileron deflections, and at relevant flow conditions. Alternative flow control actuator layouts are proposed and design consideration for practical integration into the existing CRM-HL model are set forth. The CFD simulations indicate that the aerodynamic performance improvements due to AFC obtained for the CRM-HL are consistent with those achieved for the Reference Aircraft. The observed changes in L/D are smaller than for the Reference Aircraft because the CRM has a higher leading edge sweep angle and a different relative aileron size. Conceptual design studies confirmed that the integration of an AFC equipped aileron into the existing wind tunnel model is feasible.

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AFCactive flow controlCRM-HLaileron AFClift to drag ratioaerodynamic efficiencyL/DCFDflow controlhigh-lift Common Research Model

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Arvin Shmilovich, Matthew Stauffer, Rene Woszidlo, Paul Vijgen. 2022-04-27. Low-Speed Performance Enhancement using Localized Active Flow Control: Simulations, Scaling and Design of Localized Active Flow Control on the Common Research Model (4/4). https://ntrs.nasa.gov/citations/20220006736

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