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Numerical investigations of aerodynamic properties of a propeller blown circulation control system on a high wing aircraft

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Abstract

The contribution gives an overview over a wide range of CFD simulations, which were performed in the course of the German collaborative research center 880 to investigate the aerodynamic properties of a complete turboprop powered transport aircraft in landing configuration with a circulation control high-lift system. The main purpose of the contribution is to highlight aerodynamic and flight mechanical aspects of the integration of lift augmentation technologies into the design of a short take-off and landing aircraft concept. In this context, the influence of engine nacelles and thrust on the stall behavior and the following improvements due to the use of a nacelle strake are discussed. Furthermore, static longitudinal and lateral stability as well as the dynamic longitudinal stability are investigated. While circulation control itself has a rather small impact on the stability, the impact of engine thrust in conjunction with circulation control is considerable. In addition, the one engine inoperative case was simulated. For some flow and engine conditions, the resulting yawing moments are more than twice as high as the actual yawing moments due to asymmetric thrust.

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Authors and Affiliations

  1. Institute of Aerodynamics and Flow Technology, German Aerospace Center, Lilienthalplatz 7, 38108, Brunswick, Germany

    Dennis Keller & Ralf Rudnik

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  1. Dennis Keller
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  2. Ralf Rudnik
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Correspondence to Dennis Keller.

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This paper is based on a presentation at the 50th 3AF International Conference on Applied Aerodynamics, March 30–April 1, 2015, Toulouse, France.

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Keller, D., Rudnik, R. Numerical investigations of aerodynamic properties of a propeller blown circulation control system on a high wing aircraft. CEAS Aeronaut J 7, 441–454 (2016). https://doi.org/10.1007/s13272-016-0195-2

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  • DOI: https://doi.org/10.1007/s13272-016-0195-2

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