The S407, S409, and S410 Airfoils

Abstract

A family of airfoils, the S407, S409, and S410, intended for a high-altitude, tandem-rotor helicopter has been designed and analyzed theoretically. The two primary objectives of high maximum lift, relatively insensitive to roughness, and low profile drag have been achieved. The constraints on the pitching moments and airfoil thickness have been satisfied.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2010
Accession Number
ADA532505

Entities

People

  • Dan M. Somers

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Altitude
  • Boundaries
  • Boundary Layer
  • Boundary Layer Transition
  • Helicopters
  • High Altitude
  • Laminar Flow
  • Leading Edges
  • Low Drag
  • Mach Number
  • Pressure Distribution
  • Pressure Gradients
  • Reynolds Number
  • Roughness
  • Trailing Edges
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Systems Analysis and Design