Accession Number:

ADA633185

Title:

A Biomimetic Propulsor for Active Noise Control: Experiments

Descriptive Note:

Technical rept.

Corporate Author:

NAVAL UNDERSEA WARFARE CENTER DIV NEWPORT RI

Report Date:

2002-03-01

Pagination or Media Count:

24.0

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.

Subject Categories:

  • Submarine Engineering
  • Acoustics
  • Bionics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE