Stern Flap Performance on 110 ft Patrol Boat WPB1345 STATEN ISLAND

Abstract

The WPB1345 STATEN ISLAND was selected as a test ship for a full-scale at-sea evaluation of a stem flap design for the U.S. Coast Guard ISLAND Class (110 WPB) patrol boats. A baseline (pre-flap) speed trial was conducted. A stem flap was then installed, and a comparative post-flap speed trial was conducted. Adjustments were made to the data to account for differences in the loading conditions experienced during the two speed trials, and ship powering and fuel consumption were estimated. Comparison of the pre- and post-flap trials performance indicated that the stem flap had the following benefits on the ISLAND Class: (1) Shaft power reduction in the range of 4% to 19%, at equivalent ship speed. (2) Top speed increased by 1.9 knots, due to the development of an additional 55 engine RPM and 168 hP at full power. (3) Reduction in annual fuel consumption estimated to be 33,600 gallons (10.3%), with an associated fuel cost savings of $50,500/year.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2002
Accession Number
ADA400106

Entities

People

  • Christopher D. Barry
  • Dominic S. Cussanelli

Organizations

  • Naval Surface Warfare Center Carderock Division

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Coast Guard
  • Coordinate Systems
  • Engineering
  • Flow
  • Flow Separation
  • Fuel Consumption
  • Global Positioning Systems
  • Measurement
  • Model Basins
  • Model Tests
  • Models
  • Near Field
  • Power Levels
  • Standardization
  • Surface Warfare
  • Test And Evaluation
  • Trailing Edges

Readers

  • Aerospace Engineering
  • Naval Architecture and Marine Engineering.