Acoustic Measurements from a Rotor Blade-Vortex Interaction Noise Experiment in the German-Dutch Wind Tunnel (DNW)

Abstract

Acoustic data are presented from a 40-percent-scale model of the four-bladed BO-105 helicopter main rotor, tested in a large aeroacoustic wind tunnel. Rotor blade-vortex interaction (BVI) noise data in the low-speed flight range were acquired using a traversing in-flow microphone array. The experimental apparatus, testing procedures, calibration results, and experimental objectives are fully described. A large representative set of averaged acoustic signals are presented.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1988
Accession Number
ADA192429

Entities

People

  • J. W. Elliott
  • K.-j. Schultz
  • R. M. Martin
  • W. R. Splettstoesser

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Acoustic Measurement
  • Acoustic Properties
  • Acoustic Signals
  • Acoustics
  • Acquisition
  • Aircrafts
  • Background Noise
  • Data Acquisition
  • Frequency
  • Mach Number
  • Measurement
  • Plastic Explosives
  • Short Takeoff Aircraft
  • Spectra
  • Strain Gages
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Engineering
  • Fluid Dynamics.