Porous Hull Research - Phase 1

Abstract

High speed planing craft suffer repetitive and intense shock loads from wave impacts that injure or fatigue personnel and damage equipment. A porous hull concept is tested for reducing the impact loads and spreading their energy over a longer time. The concept is essentially an outer hull with holes and an inner hull for watertight integrity, and bladders and foams are used between the hulls to expel water between impacts. A drop-box apparatus is used to test this concept with two bottom dead rise angles and a variety of hole shapes and porosities. Significant impact reduction is measured, and these reductions are shown to be in frequency ranges that affect human comfort and performance.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2009
Accession Number
ADA498306

Entities

People

  • Scott Gowing
  • Timothy Coats
  • Young Shen

Organizations

  • Naval Surface Warfare Center Carderock Division

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Buoyancy
  • Drop Tests
  • Dynamic Pressure
  • Frequency
  • Impact Loads
  • Instrumentation
  • Manufacturing
  • Naval Architecture
  • Naval Warfare
  • Porosity
  • Pressure Distribution
  • Pressure Gages
  • Pressure Measurement
  • Pressure Transducers
  • Shock
  • Two Dimensional
  • Warfare

Readers

  • Combustion and Flow Dynamics.
  • Marine Hydrodynamics
  • Materials Science