Analysis of Low-Speed Helicopter Flight Test Data.

Abstract

The purpose of this study was to investigate the aerodynamic behavior of a helicopter rotor operating in the low-speed flight regime, particularly in the nap-of-the-earth (NOE) evasive mode. The effort consisted of reducing and analyzing existing AH-1G flight test response data acquired for simulated NOE flight under Contract DAAJ02-73-C-0105. Specific areas of interest analyzed in this study include blade/vortex interaction at 50 knots and angle-of-attack data derived from hot-wire measurements taken in hover.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1979
Accession Number
ADA074141

Entities

People

  • James L. Tangler

Organizations

  • Bell Flight

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Boundary Layer
  • Flight Speeds
  • Fourier Series
  • Geometry
  • Helicopter Rotors
  • Helicopters
  • Measurement
  • Pressure Distribution
  • Pressure Measurement
  • Pressure Transducers
  • Tail Rotors
  • Test Equipment
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aviation Science / Aeronautics.
  • Theoretical Analysis.