Design of the Active Elevon Rotor for Low Vibration

Abstract

Helicopter fuselages vibrate more than desired, and traditional solutions have limited effectiveness and can impose an appreciable weight penalty. Alternative methods of combating high vibration, including Higher Harmonic Control (HHC) via harmonic swashplate motion and Individual Blade Control (IBC) via active pitch links, have been studied for several decades. HHC via an on-blade control surface was tested in 1977 on a full scale rotor using a secondary active swashplate and a mechanical control system (Ref. 1).

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2000
Accession Number
ADA480632

Entities

People

  • Mark V. Fulton

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Control Surfaces
  • Control Systems
  • Dynamic Pressure
  • Fluid Dynamics
  • Frequency
  • Mach Number
  • Modal Analysis
  • Resonant Frequency
  • Standards
  • Steady State
  • Structural Properties
  • Transfer Functions
  • Two Dimensional
  • Unsteady Aerodynamics
  • Vibration

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Calculus or Mathematical Analysis
  • Irregular Warfare and Special Operations Cyberspace Operations against Adversarial Threats.