Theoretical and Experimental Results for the S414, Slotted, Natural-Laminar-Flow Airfoil

Theoretical and Experimental Results for the S414, Slotted, Natural-Laminar-Flow Airfoil

The S414, slotted, natural-laminar-flow airfoil was designed for rotorcraft applications and has been analyzed theoretically using MSES and OVERFLOW. In addition, it has been verified experimentally in the Pennsylvania State University Low-Speed, Low-Turbulence Wind Tunnel. The primary objectives of...

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Veröffentlicht in:Journal of aircraft 2014-11, Vol.51 (6), p.1883-1890
Hauptverfasser: Coder, James G, Maughmer, Mark D, Somers, Dan M
Format: Artikel
Sprache:eng
Schlagworte:
Aerodynamics
Aerospace engineering
Aircraft
Airfoils
Conferences
Design specifications
Dimensional analysis
Drag
Fluid dynamics
Laminar flow
Laminar flow airfoils
Lift
Low speed
Pressure distribution
Reynolds number
Rotary wing aircraft
Rotorcraft
Specifications
Turbulence models
Viscosity
Wind tunnels
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Beschreibung
Zusammenfassung:The S414, slotted, natural-laminar-flow airfoil was designed for rotorcraft applications and has been analyzed theoretically using MSES and OVERFLOW. In addition, it has been verified experimentally in the Pennsylvania State University Low-Speed, Low-Turbulence Wind Tunnel. The primary objectives of the design are high maximum lift and low profile drag, both of which have been achieved while satisfying a thickness constraint. The theoretical analyses show good agreement with the experimental results. The experimental results are compared with those of the S406 and S411 airfoils, which were designed to similar specifications, and illustrate the potential benefits of the slotted, natural-laminar-flow concept.
ISSN:0021-8669
1533-3868
DOI:10.2514/1.C032566