Characteristics of Deformable Leading Edge for High Performance Rotor

Abstract

The deformable leading edge (DLE) concept to improve the blade capability in lift, drag and pitching moments has been investigated for the purpose of meeting new rotor maneuverability and susceptibility requirements. The advantages and disadvantages of this concept have been carefully examined with limited computational and experimental results. This work showed that this concept achieves a substantial improvement in lift capability and also reduces the drag and pitching moment at the same time. Effects of various parameters, such as Reynolds number, reduced frequency, mean angle of oscillation, and airfoil shape, on the performance of these airfoils were also investigated.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1993
Accession Number
ADA268648

Entities

People

  • C. Tung
  • K. W. Mcalister
  • Shang‐Fan Lee

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Dynamic Loads
  • Equations
  • Flow
  • Flow Fields
  • Flow Visualization
  • Fluid Flow
  • Helicopter Rotors
  • Layers
  • Leading Edges
  • Measurement
  • Pressure Distribution
  • Reynolds Number
  • Shape
  • Stratified Fluids
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Systems Analysis and Design
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).