Accession Number:

ADD020161

Title:

Boiling Heat Transfer Surface

Descriptive Note:

Patent application, Filed 30 Jul 2004

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

2004-07-30

Pagination or Media Count:

12.0

Abstract:

This patent application relates to a system for a vehicle that creates and maintains a gasvapor cavity to reduce drag and increase propulsion efficiency. The gasvapor cavity also can be used to reduce noise received by a sonar system. The system to create and maintain a gasvapor cavity about a hull surface includes a fence selectively extendable above and below the hull surface. A gas venting means is positioned beneath the hull surface downstream from the fence. The vented gas can be used to create a gasvapor cavity downstream from said fence to cover the hull surface. A heat source also is positioned downstream from the fence and beneath the hull surface. The heat source is capable of heating the hull surface to create or maintain the gasvapor cavity on the hull surface. A sensor and controller also can be provided to control the cavity. 2 figures

Subject Categories:

  • Submarine Engineering
  • Fluid Mechanics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE