Non-Steady Velocity Measuremeht of the Wake of a Helicopter Rotor at Low Advanced Ratios.

Abstract

A system was developed which could measure the instantaneous velocities in the wake of a model helicopter rotor operating at low advance ratios. A three-wire hot film probe was mounted on a traverse and placed at many positions in the wake. The output of the probe was fed into an on-line computer operating in an interactive mode. Computer generated vector plots were made of both time averaged velocities and instantaneous velocities for the case of mu = 0.06. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1981
Accession Number
ADA107722

Entities

People

  • H. R. Velkoff
  • H. Terkel

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Acquisition
  • Circuits
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Data Acquisition
  • Electronic Circuits
  • Flow Fields
  • Frequency Response
  • Hot Wire
  • Measurement
  • Mechanical Engineering
  • Operating Systems
  • Recording Systems
  • Tape Recorders
  • Three Dimensional
  • Wind Velocity

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.