Wind-Tunnel Evaluation of the Effect of Blade Nonstructural Mass Distribution on Helicopter Fixed-System Loads

Abstract

This report provides data obtained during a wind-tunnel test conducted to investigate parametrically the effect of blade nonstructural mass on helicopter fixed-system vibratory loads. The data were obtained with aeroelastically scaled model rotor blades that allowed for the addition of concentrated nonstructural masses at multiple locations along the blade radius. Testing was conducted for advance ratios ranging from 0.10 to 0.35 for 10 blade-mass configurations. Three thrust levels were obtained at representative full-scale shaft angles for each blade-mass configuration. This report provides the fixed-system forces and moments measured during testing. The comprehensive database obtained is well-suited for use in correlation and development of advanced rotorcraft analyses.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA629356

Entities

People

  • Jeffrey D. Singleton
  • Matthew L. Wilbur
  • Paul H. Mirick
  • W. K. Wilkie
  • William T. Yeager Jr.

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Arm Bones
  • Center Of Gravity
  • Composite Materials
  • Data Acquisition
  • Dynamic Response
  • Electrical Equipment
  • Frequency
  • Helicopters
  • Hydraulic Actuators
  • Mach Number
  • Measurement
  • Military Research
  • Structural Properties
  • Test And Evaluation
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerospace Engineering