Full-Scale-Tunnel Investigation of the Static-Thrust Performance of a Coaxial Helicopter Rotor

Abstract

An investigation to determine the static-thrust performance of a coaxial helicopter rotor having blades tapered both in plan form and thickness ratio has been conducted in the Langley full-scale tunnel. Tests of both the coaxial-rotor and single-rotor configurations were made for a range' of blade-pitch setting and for a range of tip speed up to 500 feet per second. Several tests were also conducted to determine the effect of variation in directional control on the hovering performance of the coaxial rotor.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1951
Accession Number
ADA382025

Entities

People

  • Robert D. Harrington

Organizations

  • National Aeronautics and Space Administration

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Aeronautical Laboratories
  • Coaxial Configurations
  • Coefficients
  • Diameters
  • Directional
  • Drive Shafts
  • Elements
  • Figure Of Merit
  • Geometry
  • Helicopter Rotors
  • Helicopters
  • Hovering
  • Measurement
  • Strain Gages
  • Thickness
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Aerospace Engineering