Three-Dimensional Measurements of the Velocity in the Near Flow Field of a Full-Scale Hovering Rotor

Abstract

An experimental investigation of the flow field of a hovering helicopter rotor was initiated at Mississippi State University in 1970. The initial results of this work were reported in USAAMRDL TR 72-33. The current report presents additional experimental results obtained during a continuation of the rotor flow study. The experimental measurements were performed on the Mississippi State University rotor whirl tower which was equipped with a 33.5- foot diameter, OH-23B two-bladed rotor. The measurements consisted primarily of velocity surveys of the rotor inflow and wake with measurements below the rotor being confined to the region just below the blades. Some experiments were also performed to determine boundary layer flow phenomena by use of the chemical sublimation technique.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1974
Accession Number
AD0781547

Entities

People

  • Donald W. Boatwright

Organizations

  • Mississippi State University

Tags

Communities of Interest

  • Air Platforms
  • Sensors

DTIC Thesaurus Topics

  • Acquisition
  • Boundary Layer
  • Boundary Layer Flow
  • Boundary Layer Transition
  • Computational Fluid Dynamics
  • Engineering
  • Flow Visualization
  • Fluid Dynamics
  • Geometry
  • Helicopter Rotors
  • Measurement
  • Pressure Distribution
  • Pressure Gradients
  • Test And Evaluation
  • Test Facilities
  • Three Dimensional
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Engineering
  • Fluid Dynamics.