Accession Number:

ADD020418

Title:

Apparatus for Control of Stator Wakes

Descriptive Note:

Patent application, Filed 18 Sep 2009

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

2009-09-18

Pagination or Media Count:

11.0

Abstract:

This patent application discloses an apparatus that controls the wake of stator blades on an underwater vehicle. The apparatus comprises one or more stator blades, each with a movable trailing edge that when actuated in a controlled manner produces a periodic flapping motion upstream of a propulsion rotor. The controlled periodic flapping of the trailing edge fills the stator blade wake enough to overcome the stator blades own drag and fills its wake deficit. This has the effect of reducing the blade rate tonal noise of the propulsion rotor.

Subject Categories:

  • Hydraulic and Pneumatic Equipment
  • Submarine Engineering
  • Acoustics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE