Design and Experimental Results for the S414 Airfoil

Abstract

A 14.22-percent-thick, slotted, natural-laminar-flow (SNLF) airfoil, the S414, intended for rotorcraft applications has been designed and analyzed theoretically and verified experimentally in The Pennsylvania State University Low-Speed, Low-Turbulence Wind Tunnel. The two primary objectives of high maximum lift and low profile drag have been achieved. The constraint on the airfoil thickness has been satisfied. The airfoil exhibits an abrupt stall. Comparisons of the theoretical and experimental results show good agreement overall. Comparisons with the S406 and S411 airfoils, which have similar design specifications, confirm the achievement of the objectives.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2010
Accession Number
ADA545821

Entities

People

  • Dan M. Somers
  • Mark D. Maughmer

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Boundaries
  • Boundary Layer
  • Engineering
  • Flow Visualization
  • High Lift
  • Hypervelocity Flow
  • Mach Number
  • Pressure Distribution
  • Pressure Gradients
  • Rotary Wing Aircraft
  • Static Pressure
  • Turbulent Flow
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.