A Biomimetic Propulsor for Active Noise Control: Experiments

Abstract

A strategy for the reduction of radiated noise of underwater propulsors has been developed by means of modeling. It requires a means for blade lift enhancement, which allows a lowering of the rotational speed of the propulsor. Laboratory experiments have been carried out with small propulsor models to demonstrate a biomimetic actuator technology for cambering blades actively for lift enhancement. Propulsor blades are constructed partially out of lightweight, electroactive polymeric sheets, also known as artificial muscles. The blade motion is digitally controlled and can be complex. Active lift enhancement Is demonstrated.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2002
Accession Number
ADA633185

Entities

People

  • Daniel P. Thivierge
  • Mehran Mojarrad
  • Promode R. Bandyopadhyay
  • William H. Nedderman
  • William P. Krol Jr.

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Blade Tips
  • Cells
  • Computers
  • Frequency
  • Load Cells
  • Materials
  • Measurement
  • Mechanics
  • Military Research
  • Noise
  • Power Supplies
  • Radiated Noise
  • Thrust Reversal
  • Undersea Warfare
  • Underwater Vehicles
  • Vehicles

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Nanocomposite Materials Science
  • Systems Analysis and Design

Technology Areas

  • Biotechnology