Vibration Reduction in Rotorcraft Using the ACSR Approach with Enhanced Aerodynamic and Control Modeling

Abstract

The attached report describes active vibration control in helicopter fuselages using the ACSR (Active Control of Structural Response) approach. In this approach the vibration reduction is carried out by using four actuators in the fuselage. The fuselage is modeled by finite elements. The vibratory aerodynamic loads include a free wake combined with rotor/fuselage interactional aerodynamics. An improved control algorithm preferentially reduces accelerations at selected airframe locations where vibration levels are important. Fuselage vibrations are reduced below 0.05g at all locations.

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Document Details

Document Type
Technical Report
Publication Date
Nov 10, 2000
Accession Number
ADA385831

Entities

People

  • Peretz P. Friedmann

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Actuators
  • Aerodynamic Loading
  • Aerodynamics
  • Aircrafts
  • Airframes
  • Algorithms
  • Control Systems
  • Engineering
  • Fuselages
  • Helicopter Rotors
  • Helicopters
  • Mechanical Structure
  • Rotary Wing Aircraft
  • Structural Response
  • Students
  • Vehicles
  • Vibration

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Robotics and Automation.
  • Structural Dynamics.