Prediction and Measurement of Blade-Vortex Interaction Loading,

Abstract

An extensive quantity of airload measurements was obtained for a pressure-instrumented model of the BO-105 main rotor for a large number of higher-harmonic control (HHC) settings at Duits-Nederlandse Wind Tunnel (DNW). The wake geometry, vortex strength, and vortex core size were also measured through a laser light sheet technique and LDV. These results are used to verify the BVI airload prediction methodologies developed by AFDD, DLR, NASA Langley, and ONERA. The comparisons show that an accurate prediction of the blade motion and the wake geometry is the most important aspect of the BVI airload predictions. (AN)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1995
Accession Number
ADA294468

Entities

People

  • Chee Tung
  • Gilles Rahier
  • Judith M. Gallman
  • Roland Kube
  • Thomas F. Brooks

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Signatures
  • Blade Tips
  • Blades
  • Elastic Properties
  • Experimental Data
  • Flow Visualization
  • Geometry
  • Leading Edges
  • Low Noise
  • Measurement
  • Miss Distance
  • Noise
  • Pressure Distribution
  • Pressure Measurement
  • Strain Gages
  • United States
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Engineering

Technology Areas

  • Directed Energy