Bearingless Tail Rotor Loads and Stability

Abstract

Four wind tunnel model tests were conducted on a model flex-strap bearingless tail rotor was studied for aeroelastic stability characteristics and loads. In all, 12 individual rotor parameters were investigated to determine their effect on aeroelastic stability. All data required to define the structural and aerodynamic characteristics of the basic model and structural data required to define the test stand and drive system are presented. In addition, the physical properties required to describe the various parameters are documented, thus providing a complete description of each configuration tested. The effect of each test parameter on the aeroelastic stability boundaries is indicated through plots of actual measured boundaries. Where available, the alternating strap loads for these configurations are presented. A limited amount of analysis was conducted and seemed to correlate with the test results.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1977
Accession Number
ADA049579

Entities

People

  • W. Miao
  • W. T. Edwards

Organizations

  • Boeing Rotorcraft Systems

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Airframes
  • Boundary Layer
  • Computer Programs
  • Control Systems
  • Elastic Properties
  • Geometry
  • Helicopter Rotors
  • Mach Number
  • Metal Matrix Composites
  • Modulus Of Elasticity
  • Physical Properties
  • Plastic Explosives
  • Resonant Frequency
  • Short Takeoff Aircraft
  • Tail Rotors
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Aerospace Engineering