Design and Experimental Results for the S415 Airfoil

Abstract

A 14.12-percent-thick, natural-laminar-flow airfoil, the S415, intended for the rotor of a helicopter in hover 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 pitching moment has been satisfied. The airfoil exhibits a docile stall. Comparisons of the theoretical and experimental results generally show good agreement.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2010
Accession Number
ADA545825

Entities

People

  • Dan M. Somers
  • Mark D. Maughmer

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Boundaries
  • Boundary Layer
  • Boundary Layer Transition
  • Laminar Flow
  • Leading Edges
  • Low Drag
  • Mach Number
  • Pennsylvania
  • Pressure Distribution
  • Pressure Gradients
  • Reynolds Number
  • Standards
  • Static Pressure
  • Trailing Edges
  • Turbulent Flow
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerodynamics/Aeronautics.