BOUNDARY-LAYER STUDIES ON HELICOPTER ROTORS IN FORWARD FLIGHT,

Abstract

In the analysis of boundary layers on rotors in forward flight, the essential features of the flow were demonstrated by means of relatively simple analytical solutions. Within the framework of the small crossflow and quasi-steady approximations, which are valid over most of the rotor, the laminar flow is now well understood. An important exception is the detailed structure of the flow near the separation lines, where recourse to numerical analysis of the full three-dimensional, unsteady Navier-Stokes equations are required if to predict accurately the maximum lift that can be produced by a rotor. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1968
Accession Number
AD0837147

Entities

People

  • W. J. Mccroskey

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Airframes
  • Boundaries
  • Boundary Layer
  • Equations
  • Flow
  • Helicopter Rotors
  • Laminar Flow
  • Layers
  • Navier Stokes Equations
  • Numerical Analysis
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.